Engineews

Library

ROTARY WING AIRCRAFT

HANDBOOKS AND HISTORY

PB 111391

TL

TIG

.LG9

Price $2.00

THE ROTARY WING INDUSTRY

BY

EUGENE K. LIBERATORS

VOLUME 14

ONE OF A SERIES OF 18 VOLUMES EDITED BY

EUGENE K. LJBERATORE

PREWITT AIRCRAFT COMPANY

CLIFTON HEIGHTS, PENNSYLVANIA,

AND PREPARED FOR

WRIGHT AIR DEVELOPMENT CENTER

AIR RESEARCH AND DEVELOPMENT COMMAND

UNITED STATES AIR FORCE

WRIGHT-PATTERSON AIR FORCE BASE, OHIO

UNDER CONTRACT NO. W33-038 ac-21804 (20695)

DISTRIBUTED BY

U.S. DEPARTMENT OF COMMERCE

BUSINESS AND DEFENSE SERVICES ADMINISTRATION

OFFICE OF TECHNICAL SERVICES

WASHINGTON 25, D. C.

1954

UNIVERSITY OF MICHIGAN LIBRARIES

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TL

L G9 CONTENTS

Page

I. Introduction l

II. Chronology of Rotary Wing Flight 2-l0

IE. Helicopter Manufacturers and Designers ll - 24

A. Britain

B. France

C. Germany

D. Other Foreign

E. U.S.A.

IV. Institutions for Rotary Wing Research 25

V. Operators 26 - 30

VI. Powerplant Manufacturers 3l

VII. Rotor Blade Manufacturers 32 - 33

Vin. Other Components 34 - 36

IX. Societies 37

X. Personalities, Past and Present 38 - 70

XI. Helicopter Production 7l

Distributed in the Interest of Industry

by the

U. S. DEPARTMENT OF COMMERCE

OFFICE OF TECHNICAL SERVICES

WASHINGTON 25, D. C.

With the Cooperation of the

Originating Agency

All secrecy restrictions on the contents of this document have been lifted. Quo-

tations from this report should credit the authors and originating agency. No

responsibility is assumed for the completeness or accuracy of this report. Where

patent questions are involved, the usual preliminary search is suggested. If a copy-

right notice appears on the document, the customary request for quotation

or use should be made directly to the copyright holder.

PO 1803*75-1

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II /it- 65

feet/

INTRODUCTION

A. Scope

This Volume primarily contains a list of names and addresses of

individuals and organizations that are associated with the rotary wing

industry. An attemot was made to indicate the active or inactive

status of the names listed; also, a date is listed indicating the year

the firm or individual was last known to be active.

B. Preparation

This Volume was oreoared and edited by E. K. Liberatore, Prewitt

Aircraft Conraany.

The project of which this Volume is a part was initiated by the

Air Technical Intelligence Center. It was continued to completion by

the Wright Air Development Center, under supervision of Messrs. B.

Lindenbaum and W. Oleksak.

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2II. CHRONOLOGY OF ROTARY WING FLIGHT

l50 B.C.

Principle of jet driven rotor

demonstrated. Hero of Alexandria

with his Aeolipile.

l490

Leonardo Da Vinci outlined the

scheme for a helicopter.

l754

The Russian scientist, Lomonosov,

presented to the Russian Academy of

Sciences details for a small helicop-

ter capable of lifting thermometers

and other small instruments into the

air.

l768

Paucton in his "Theory of the

Archimedes Screw" described a

helicopter with two screws, called

machine "Pterophore" France.

l784

The Launoy-Bienvenue helicopter

was demonstrated before the French

Academy of Sciences. The blade was

made of feathers. This is the earl-

iest record of a helicopter model

capable of flying.

l8l8

Count Lambertgye described a

rotorcraft to be used for dropping

messages from balloons.

l825

Vittorio Sarti of Bologna, Italy,

invented a coaxial rotor helicopter.

l843

George Cavley, the Father of

British Aeronautics, proposed a

lateral rotor helicopter driven by

steam.

l846 ca.

Marc Seguin of France experimen-

ted with a large lifting screw; later,

he tested a flapping wing device.

l847

Dr. Van Hecke built a helicopter

at Brussels, Belgium. The machine

had 4 rotors.

l848

The earliest known record of

rotary wing aircraft in the U.S.A.,

being given thought. An anonymous

writer for the "Scientific American"

described a multi-rotor helicopter '

with pusher propellers.

l850

Phillips built a working model of

a lateral rotor helicopter with steam

jet driven rotors.

l857

First British patent for a helicop-

ter issued to Henry Bright for a

coaxial rotor helicopter.

l86l

Mortimer Nelson, an American,

proposed a helicopter weighing 500

pounds and powered by a 40 HP steam

engine. Nelson obtained the first

U.S. patent for a helicopter.

l86l

A helicopter designed by Prof.

Mitchell was under development for

the U.S. Army, intended for use in

the Civil War.

l86l-63

Ponton D'Amecourt was engaged

in helicopter research. He built a

4 pound steam driven coaxial model.

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II. CHRONOLOGY OF ROTARY WING FLIGHT

3

l862

William C. Powers of Mobile,

Alabama constructed a model of a

proposed helicopter to carry explo-

sives.

l863

Nadar (Felix Tournachon) pro-

posed a coaxial rotor helicopter

in France. He conducted a series

of balloon flights to raise money

for the project. The enterprise

was a failure.

l863

Gabriel De La Landelle pro-

posed a huge tandem rotor helicop-

ter. The following year, he formed

the "Societe De Aviation"

l874

The Achenbach steam driven

helicopter was proposed. This craft

included a screw operating in a ver-

tical plane.

l874

Coaxial rotor helicopter built at

the New York Novelty Works. It

was powered by a 2 HP vertical

steam boiler. The project was a-

bandoned.

l878

The steam driven Italian Forla-

nini helicopter flew to a height of 30

feet and remained in the air 20 sec-

onds. This was a reduced model.

l879

The French Castel helicopter,

driven by compressed air, was

damaged in tests. This was a

reduced model.

l904

Charles Renard performed model

demonstrations before the French Aca-

demy of Sciences, using rotors with

blades attached to the hub by cardan

joints.

l904

Whitehead multiple rotor helicopter

built at Bridgeport, Connecticut. No

flights were ever made.

l904

G. F. Myers of Columbus, Ohio,

built a 3 rotor helicopter.

l907

Tests at Douai, France, of the 4

rotor Breguet helicopter.

l907, November l3

At Lisieux, France, the Cornu

helicopter lifted its constructor for the

first time.

l907, April

Otto Luyties, an American, tested

his coaxial rotor system. The rotors

produced a thrust of 700 pounds.

l909

Sikorsky coaxial rotor helicopter

built in Russia.

l909

English tandem rotor helicopter built

in San Francisco. It was damaged July,

l909.

l9l2

Russian Yuryev tail rotor helicopter

built, but not flown.

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H. CHRONOLOGY OF ROTARY WING FLIGHT

l9l5

Papin-Rouilly jet rotor helicopter

tested at Lake Cercey, France. Failed

to lift off water.

l920

First Cierva autogiro built, but

not successful.

l920

First Pescara coaxial rotor heli-

copter built at Barcelona.

l92l, January l5

Oehmichen No. l helicopter flown

for first time with Etienne Oehmichen

as pilot.

l922, December l8

First flight of DeBothezat 4 rotor

helicopter made at McCook Field,

Dayton, Ohio.

l923, January l7

First practical flight made in

an autogiro by Cierva at Getafe,

Spain.

First official flight made at

Madrid, January 3l, l923. Re-

mained aloft 4 minutes at about

75 feet. Pilot was Lt. Gomez

Spencer of Spanish Flying Corps.

l923, June

The Oehmichen No. 2 four

rotor helicopter hovered for 5

minutes. Pilot was E. Oehmichen.

l923

Perry coaxial rotor helicopter

built in Chicago.

l924, May 4

The first l kilometer closed

course flown in a helicopter at

Arbouans , France. Oehmichen

No. 2 piloted by E. Oehmichen.

The best performance achieved by

this machine is as follows:

Time in the Air - l4 Min.

Height - 52 Ft.

Straight Line Distance - 2000 Yds.

Max. Speed - l5 MPH (approx.)

Max. Useful Load, not Including

Pilot - 440 Lbs.

l924

The British Air Ministry announc-

ed a helicopter competition offering

$200,000 in prizes.

Requirements:

a. Carry pilot, l hours fuel and

l50 pounds of military load.

b. Vertical flight to 2000 feet.

c. Fly over a prescribed closed

circuit about 20 miles long, at

no less than 60 MPH.

l925, October 20

First demonstration of Cierva

autogiro at Farnborough, England,

before officials of the British Air

Ministry.

l925

The Italian Air Ministry announced

a helicopter competition offering

$33,650 in prizes.

Requirements:

a. Full power ground test of l hour

b. Minimum altitude of 65 feet and

controlled descent

c. Horizontal flight of 220 yards

d. Endurance of l5 minutes.

l926, July 2

Cierva autogiro demonstrated at

Villacoublay, France, for first time.

l926, September 5

The first autogiro flight in Germany

made at Tempelhop Field, Berlin.

Pilot was Frank Courtney.

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II. CHRONOLOGY OF ROTARY WING FLIGHT > 5

l928, September l8

English Channel crossed by Cierva

in autogiro from Croydon to Le Bourget.

l928, December l8

The first autogiro flight in America

was made by Capt. Arthur Raws on of

the Spanish Army at Willow Grove, Pa.

l928, December l9

The first American pilot to make

an autogiro flight was H. F. Pitcairn

at Willow Grove, Pa. This craft,

Model C-8, was built in England and

fitted with a Wright engine for the

American demonstration.

l929, January

First autogiro flight in Italy was

made by Cierva in the C-8-3. Deliv-

ered at Rome to the Italian govern-

ment.

l929

Final trials conducted on Dutch

Von Baumhauer tail rotor helicop-

ter. The craft made many hover-

ing flights at gross weights between

2000 and 2860 pounds, but never

rose more than a few feet off the

ground.

l929

American patent rights for auto-

giro obtained by Harold Pitcairn.

Autogiro Company of America,

patent holding company formed.

l930, October 8-l3

F.A.I. international records

established on D'Ascanio helicopter

in Italy. Pilot was Marinello Nelli.

Duration(Closea Circuit)r8 Min./45 Sec.

Airline Distance -3438.7 Ft.

Altitude -59.055 Ft.

l930

First Soviet helicopter, the

ZAGIl-EA, tested.

l93l, April 22

Collier Trophy for l930 awarded to

H. F. Pitcairn and his associates for

their work on the autogiro. The a-

ward was made by President Hoover.

At this time, James Ray landed an

autogiro on the White House lawn.

l93l, May l4-28

First U.S. Transcontinental auto-

giro flight. Pilot John M. Miller

flew from Willow Grove, Pennsyl-

vania, to North Island NAS, San Diego,

California. Flight included several

stops.

l93l, August

Navy autogiro made three success-

ful takeoffs and landings from deck of

airplane carrier, Langley.

l93l, November 6

Herrick HV-l convertaplane flown

at Niles, Michigan.

l93l, November l5

First parachute jump from an auto-

giro in U.S. by Frank E. Hammond

from a Pitcairn autogiro at Caldwell,

New Jersey.

l93l

U.S. Marine Corps conducted

service tests with Pitcairn autogiro.

l933, October 25

The Belgian helicopter, Florine - 2,

set an unofficial record by remaining

in the air 9 minutes, 58 seconds. The

pilot was Robert Colin.

l934, July

Military characteristics for an

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II. CHRONOLOGY OF ROTARY WING FLIGHT

6

autogiro approved by U.S. Air Corps.

l934, December 9

Kellett KD-l autogiro first flown.

Pilot, Lou Leavitt.

1934

J. De La Cierva flew a direct

control autogiro onto the deck of a

Spanish seaplane carrier at anchor,

and took off again.

l935, January

Reginald Brie delivered Cierva

C-30 autogiro to Italy, landing it

on the cruiser Fiume at anchor in

the Gulf of La Spezia. This was

also done with the cruiser moving

at 24 knots.

1935, Mrv 25

First autogiro airmail delivery.

| Lou Leavitt,in a Kellett KD-l, and

j Jim Ray,in a Pitcairn PA-22,de-

I livered a load of airmail by land-

ing on the Philadelphia Post Office

roof. These were demonstration

flights.

1935, December l4

Breguet-Dorand laboratory

gyroplane flown at Villacoublay,

France. Piloted by Claisse, the

craft flew a closed circuit of

approximately l500 feet at an

altitude of about 3l feet. A

week later the craft was flown

up to 62 MPH.

l935

Breguet helicopter established

F.A.I. records:

Endurance - l Hr., 5 Min., 58 Sec.

Distance in Closed Circuit-27. 5 Mi.

Speed over 20 KM course - 62 MPH

Height - 5l5 Ft.

1936, May

First two Army autogiro pilots

completed instructions at NACA,

Langley Field, Virginia. They were

Lt. H. F. Gregory and Lt. E. S.

Nichols.

l936, June 26

First free flight in FW-6l. It

was piloted by Ewald Rohlfs.

l937, May l0

First successful autorotative

flight with a helicopter. Focke

FW-6l - piloted by E. Rohlfs.

From l3l0 feet.

l937, June

Focke FW-6l established following

F.A.I. records:

Speed - 76 MPH

Height - 8000 Ft.

Endurance - l Hr. 22 Min.

Distance in a Closed Circuit - 50 Mi.

l937, July 30

Herrick convertaplane flown as

a biplane and converted to rotating

wing while in flight. Flown at Blvd.

Airport, Philadelphia, with George

Townsend as pilot.

l938, April

Air Corps Autogiro School organ-

ized and started operations. Nine

pilots and nine mechanics trained.

l938, June 7

The British Weir W-5 helicopter

was test flown at Dalrymple, Scot-

land with R. A. Pullin as pilot. This

was the first practical British heli-

copter. Over l00 flights were made.

The maximum speed as flown was 72

MPH.

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II. CHRONOLOGY OF ROTARY WING FLIGHT

7

l939, July 6

Eastern Air Lines obtained a con-

tract from the U.S. Post Office Dept.

for conducting autogiro mail service

between the Philadelphia Post Office

roof and the Camden Airport. The

Kellett KD-lB autogiro was used.

The mail service was operated from

July 6, l939, to July 5, l940.

l939, September l4

The first official flight of the

Sikorsky VS-300 made.

l94l, May 6

The Sikorsky VS-300 A established

a world's endurance record of l hour,

32 minutes and 26.l seconds.

l942, May l3

First cross country flight in

a helicopter begun. The Sikorsky

XR-4 was flown from Stratford,

Connecticut, to Wright Field,

vton, Ohio, piloted by C. L.

Morris. The trip took 5 days and

covered 76l airline miles. The

elapsed time was l6 hours and l0

minutes.

l942

The U.S. Air Force Technical

School at Chanute Field, Illinois,

established a course for the training

of helicopter mechanics.

l943, April ll

The Piasecki PV-2 first flown.

l943, November l9

First military helicopter base in

U.S. established by U.S. Coast

Guard at Floyd Bennett Field,

Brooklyn. Three HNS-l's assigned

with Lt. Commander Frank Erick-

son in charge.

l943, December

First helicopters delivered to the

Pacific area, World War-2. Flown

from Miami, Florida in a C-46 for

rescue duty in the China-Burma

area. Twelve Sikorsky R-4*s

assigned.

l943

By this date, 20 German Flettner

FL-282's were built, having made

400 flights and accumulated l000

flying hours.

l944, January 2

First Atlantic convoy patrol by

helicopter sailed from New York for

England. Three Sikorsky R-4's were

used.

l944, May l0

The Bell-30 helicopter demonstrat-

ed publicly inside the 65th Regiment

Armory at Buffalo, New York, with

Floyd W. Carlson as pilot.

l944, June

U.S. Air Force established first

Helicopter Training Command at

Freeman Field, Seymour, Indiana.

l943, July 2

First production Sikorsky R-4

delivered to U.S. Air Force. A

total of l30 R-4's were delivered.

l944, August 7

Kellett XH-8 successfully flown

at North Wales, Pennsylvania.

l944, August

First public flight of Hiller XH-44

coaxial rotor helicopter.

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II. CHRONOLOGY OF ROTARY WING FLIGHT

8

l944, December 22

The U.S. Coast Guard had 68

qualified helicopter pilots.

l945, March

The Piasecki XHRP-l success-

fully flown.

l945

Helicopter Association of Great

Britain formed.

l946, March 8

C.A.A. granted first helicopter

A. T. C. to Bell for Model 47 ma-

chine.

l946, June 30

The U.S. Coast Guard was

operating 3l helicopters.

l946, Julv l

The U.S. Navy's first Helicopter

Utility Squadron activated at Lake-

hurst, New Jersey.

l946, December 3l

The U.S. Air Force had l72

helicopters of all types in

operation.

l947, January l5

First Kaman intermeshing

rotor helicopter flown - Model

K-l25A

l947, May 5

Prototype McDonnell Ramjet heli-

copter first flown.

l947, July 24

Bristol l7l-l first flown.

l947, October l

Air mail delivery by the Los

Angeles Airways began. This was

the first CAB, certified helicopter

air mail service.

l947, December 7

First successful flight of the

Fairey FB-l gyrodyne.

l947, December

The first Marine Helicopter Squa-

dron HMX-l formed at Quantico,

Virginia,with Col. . C. Dyer in

command.

l947, December

Cross country flight of 2700 miles

made from Lakehurst, New Jersey,

to San Diego, California. Pilot was

C. C. Marcy, U.S.N.,in a HO3S-l.

Required 5 l/2 flying days; elapsed

time 37 l/2 hours.

l947

First Army Field Forces heli-

copter procured, the Bell YH-l3.

This was followed by the H-l3B.

l948, February 7

First flight of the Sznycer-Gottlieb

SG-6D helicopter.

l948, June l6

First free flight of the SNCA SE-3l0l

at Villacoublay, France.

l948, June 30

The Rotary Wing Development Unit

of the U.S. Coast Guard of Elizabeth

City, North Carolina, was formed.

Its mission was to develop rotary

wing aircraft for use by the Coast

Guard in carrying out its assigned

functions.

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II. CHRONOLOGY OF ROTARY WING FLIGHT

l948, June

Kellett XH-l0 delivered to the

U.S. Air Force

l948, October l4

United Hiller 360 granted a

C.A.A. approved type certificate.

l948, October

The French SNCA SE-3000

lateral rotor helicopter made

its first flight at Villacoublay.

l948, November

First practical flight of the

French Nord l700 helicopter.

l948, December 7

First successful flight of

Cierva W-ll Air Horse, three

rotor helicopter at Southampton

Airport, England.

l948, December

The first Marine Helicopter

Squadron HMX-l had ll heli-

copters: 5 Piasecki HRP-l's;

5 Sikorsky HO3S-l's and one

Bell HTL-2.

l948

Fairey Gyrodyne established

an official world's speed record

of l24.3 MPH.

l949, March l

As of this date, the C.A.A.

listed the following certified

helicopters:

Bell 97

Sikorsky l5

United l

Total ll3

l947, March 7

First free flight of the French

SNCA SO-1l00 jet rotor helicopter.

l949, April

A Sikorsky helicopter completed

a 3750 mile trip unescorted from

Elizabeth City, North Carolina, to

Port Angeles, Washington. The e-

lapsed time was 57.6 hours, spread

over l0 l/2 days.

l949, Mayl

As of this date there were 659

CAA licensed helicopter pilots. New

York State led with l08, California

had 72.

l949, May 6

F.A.I. helicopter record over

l00 KM course established by Harold

E. Thompson in a Sikorsky S-52-l

at Milford, Connecticut. Speed -

l22.5 MPH (l97.545 KPH)

l949, May 2l

F.A.I. helicopter altitude record

established by Capt. H.D. Gaddis in

a Sikorsky S-52-l. Altitude - 6,468

meters (2l,200 Ft.)

l949, June

To this date, the flying time on

helicopters in the U.S. was ll0,000

hours.

l949, December 9-l0

First Convertaplane Congress

held in Philadelphia under the auspices

of the American Helicopter Society

and the Institute of Aeronautical

Sciences.

l949

Piasecki XHJP-l set an unofficial

world's speed record of l3l MPH.

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10

H. CHRONOLOGY OF ROTARY WING FLIGHT

l949

Bell XH-l2 established an un-

official speed record of l33.9 MPH.

l949

Piasecki XHJP-l performed

the first successful loop accidental-

ly during flight tests.

l949

First London-Paris helicop-

ter flight made in a Westland-

Sikorsky S-5l. It carried two

passengers and pilot from a London

garage to downtown Paris in 2 hours,

20 minutes.

l949

A Navy Sikorsky helicopter

flew 7l2 miles non-stop, between

Seattle and Alameda. The elapsed

time was l0 hours, l7 minutes;

unofficial record.

ADDENDA

l93l, August 5

First gyroplane with control in

rotor flown at Paoli, Pa. Wilford

No. 2 gyroplane, Frank Brown,

U.S.N.R., pilot.

l932, October 1

First wingless gyroplane

flight in America at Wings Field,

Pa. Wilford gyroplane No. 3,

Paul E Hovgard, Pilot

l937, August

First sea gyroplane accepted

by the U.S. N. First water flight

in America with gyroplane.

Penna. Aircraft Syndicate XOZ-l.

Albert Sidlow, Pilot.

l938, October 28-29

First Rotary Wing Aircraft

Congress held at Franklin Institute,

Philadelphia, Pa.

Chairman: E. B. Wilford

Secretary: Ralph McClarren

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m. HELICOPTER MANUFACTURERS AND DESIGNERS 11

A. BRITISH

Bevan Brothers, Rittendon Common, England.

Sponsored Isacco Rotorchute.

Bristol Aeroplane Company, Filton, Bristol, England.

Helicopter Division; Chief Engineer - Raoul Hafner.

Cierva Autogyro Co. Ltd., Airport, Southampton, England.

Managing Director - C. G. Pullin; General Manager - H. A. Marsh; Chief

Engineer - K. Watson; Sales Manager - R. A. Pullin.

Cunliffe-Owen (Cierva Licensee)

Company dissolved in l948.

Fairey Aviation Co. Ltd., Hayes, Middlesex, England.

Helicopter Division; Chief Engineer - J. A. J. Bennett.

Firth Helicopters, Ltd., 32 Clarges Street, Piccadilly W-L,London.

Directors: Lord Bruntsifield, Anson Firth, W. E. Hole, Maj. J. N. D.

Heenan. Additional Directors: Brig. R. L. Hutchins, E. L. Colston.

Hoppi-Copters Ltd., Sandringham Mansions, Exeter Road, Bournemouth,

England.

Westland Aircraft Ltd., Yeovil, England.

(Sikorsky Licensee) Helic. Engineer - O. L. L. Fitzwilliams.

B. FRANCE

Breguet - S. A. Pes Ateliers D'Aviation, 24 Rue Georges Bizet, Paris l6^

France.

Societe D'Etudes Pes Giravions Dor and, 6-8-l0 Rue Leibnitz, Paris, l8 France,

Formed in l949 by Rene Dorand to develop helicopters and components.

Societe Francoise Du Gyroplane, 26 Rue Charles Lafitte, Neuilly Sur Seine,

Seine, France.

Chief Engineer - Marcel Vullierme.

S.I. G. M. A. Works, Venissieux (Near Lyons), France.

Chief Engineer - R. P. Pescara.

SNCA Centre (Societe National De Constructions Aeronautiques De Centre)

l67 Rue de Silly, Billancourt (Paris Suburb) France.

Chief Designer - Monsieur Dorand; Chief Mechanical Engineer - Monsieur

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IE. HELICOPTER MANUFACTURERS AND DESIGNERS

Conan; Shop Foreman - Monsieur Bateille.

Dissolved in l949.

SNCA Nord, 52 Rue Guynemer Issy les-Moulineaux, Paris, France.

Chief Engineer - Monsieur Bruel; Ass't Chief Engineer - Monsieur P.

Lefort.

SNCA Sud Est, l0 Rue Villot, La Cour Neuve - (Suburb of Paris) (Airport

is at Villacoublay) France.

Technical Director - Monsieur Vautier; Chief Engineer - Pierre Renaux;

Chief Experimental Engineer - Monsieur Marchetti; Pilot (Trained at HAT

and Bell) - Monsieur Boulet.

H. Focke left the firm in l947.

SNCA Sud Quest, 2 Rue De Larnac, Courbevoie (Seine), France.

Chief Engineer - Morain; Engineers - Laville, Maillard and Laufer, who

was formerly with Doblhoff; Pilot - Dellys.

C. GERMANY

Paul Baumgartl, Vienna, Austria (Inactive).

Baumgartl is now with Fabrica Do Galeao, Rio De Janiero, Brazil.

Flettner Company, Berlin, Germany.

President - Anton Flettner; Chief Pilot - Hans Ehrenfrie Fuistirig; Chief

Flight Mechanic and Pilot - Xaver Schleicher; Experimental Apparatus

Mechanic - Willi Deilitz; Transmission Engineer - Dr. Kuchler; Chief

Engineer - Arnold; Experimental and Flight Test Engineer - Joseph

Schmidt; Chief of Structures - Gerhard Siegel; Chief Draftsman - Oscar

Nagel; Engineer Draftsman - Heinz Gundlach.

(Dissolved).

Focke-Achgelis Company, Delmenhorst, Germany.

Personnel: Dr. Henri Focke; Herr Ries; Herr Andres; Herr Scheler; Herr

Osterlock; Herr Helmkl; Herr Von Happard; Herr Lulring; Herr Ulpts; Test

Pilot - Otto Dumke; Pilot - Helmut Gerstenhauer; Walter Moeller; Engineer

and Transmission Mechanic - Heinz Zelewsky; Ernest Reimann.

(Dissolved).

Nagler-Rolz, Zell Am See, Austria.

Bruno Nagler and Franz Rolz.

(Dissolved).

Rieseler U. Co. Apparatehau, Berlin, Germany.

(Dissolved l939).

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13

IH. HELICOPTER MANUFACTURERS AND DESIGNERS

W. N. F. (Wiener Neustadt Fabrik) (Doblhoff), Factory at Ober Grafendorf,

near St. Polten, Lower Austria.

Five engineers worked on design of jet helicopters. Chief Engineer - F.

Doblhoff; Jet Research - T. Laufer; Statics and Test Work - A. Stepan,

Detail Design - W. Vorden; Mechanical Design - A. Czernin. In addition,

l5 shopmen were employed in this development.

(Company Dissolved).

D. OTHER FOREIGN

Oscar R. W. De Asboth, Eva-Utca l4, Budapest 7, Hungary.

(l948 AddressIT

Burwell Helicopters, 200 Bloor St. West, Toronto,Canada.

Stanley J. Burwell. (Inactive).

The de Havilland Aircraft of Canada Ltd., Toronto, Ontario.

President - A. S. Butler. -

Extensive helicopter program on rotors - l949.

Dominion Helicopter Air Transport, Montreal, Canada.

Formed in l945 to build helicopters.

Fabrica Do Galeao, Rio De Janiero, Brazil*

Helicopter Department. Chief Engineer - Paul Baumgartl

Fiat S.P.A., Corso IV Novembre NR 300, Turin, Italy.

Engineer - Secondo CampinL

Intercity Airlines Company, 276 St. James West, Montreal, Quebec.

Bernard Sznycer, Selma Gottlieb.

Gowny Instytut Lotnictwa (Central Institute for Aviation), Warsaw, Poland*

(i949) Zbigniew Brzoska, Chief Engineer. Helicopter research and develop-

ment.

Piaggio Co., S. A., Via Filzi l4, Pisa, Italy.

Chief Helicopter Engineer - Corridino D'Ascanio .

Picken Helicopter, Canada.

1949 development of the "Helicon".

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14

IH. HELICOPTER MANUFACTURERS AND DESIGNERS

E. U. S. A.

Adel Precision Products, Burbank, California.

"Had helicopter project in l943-44.

Aeronautical Products, l8l00 Ryan Road, Detroit, Michigan.

Helicopter activity dropped around l946.

Former Engineers: Corwin Denny and Carl Schakel.

In l947, A. P. merged with the McQuay Company.

Aerotor Associates, Alhambra, California.

H. Velkoff, C. Schakel.

(Dissolved).

Air Cruisers,' Inc., 330 Highland Avenue, Clifton, New Jersey.

(Active l944) .

Airex Manufacturing Co., 5-33 48th Street, Long Island City, New York.

Allis-Chalmers Manufacturing Co., Box 5l2, Milwaukee l, Wisconsin.

Chief Helicopter Engineer - Sterling Beckwith.

*

American Die and Tool Company, Reading, Pennsylvania.

Chief Helicopter Engineer - Jean De Chappedelaine.

(Inactive by l948).

American Flettner Corporation,

President: Anton Flettner.

American Helicopter Company, Manhattan Beach, California.

Active jet rotor helicopter project, l950.

Chairman of Board - Earl S. Baldwin; President and Chief Engineer -

Corwin D. Denney; Sec'y-Treasurer - John A. White; Pulse Jet Engine

Design Project Engineer - Ashlel C. Hewitt; Helicopter Design Project

Engineer - Harold L. Greenhut; Production Sup't - Alan C. Thomson.

E. F. Andrews Laboratories, 4367 Oakenwald Avenue, Chicago, Illinois.

Rotary Wing Patents.

Harold Avery, ll29 Mandana Blvd., Oakland, California.

Patents only, no active project, l949.

Aviation Engineering, Inc., l390 Blashfield St. S.E., Atlanta, Georgia.

Ex. V. P. Chief Production Engineer and General Manager - T. Edward

Moodie; Sales Manager - H. E. Green; Chief Engineer of Design and

Research - Walter Castles, Jr.; Design Engineer - T. M. Sparks; Chief

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IE. HELICOPTER MANUFACTURERS AND DESIGNERS 15

Draftsman and Design Engineer - J. W. Austin.

(Status Unknown).

Autogiro Company of America, l6l6 Walnut Street, Philadelphia 3, Pa.

President - Harold"F. Pitcairn; Chief Engineer - Paul H. Stanley.

Engineering Offices: 2232 Mount Carmel Avenue, Glenside, Pa.

Bakewell Company, 5238-40 Alhambra Avenue, Los Angeles 32, California.

Built the Curtis-Wright Helicopter.

Balton, Charles A_., Detroit, Michigan

Active - l943.

Beaver Cabinet Works, Corvalis, Oregon.

Ralph Chapman Helicopter l944.

Inactive by l948.

Beilgard, K. H., P. O! Box l2l4, Beverly Hills, California.

Status Unknown.

Bell Aircraft Corporation, P. O. Box l, Buffalo 5, New York.

President and General Manager - Lawrence D. Bell; Exec. Chief Engineer -

R. J. Sandstrom; Manager, Helicopter Division - David G. Forman; Service

Manager, Helicopter Division - Carl W. Diehl; Training School, Helicopter

Division - Owen Q. Niehaus.

*

Bellanca & Am.Aeromarine Indus., Inc., New Bedford, Massachusetts.

Convertaplane project during World War - 2.

Bendix Helicopters, Inc., East Main Street, Stratford, Connecticut.

Reorganized to HelicopTers, Inc, which was dissolved in l949.

Bloxon Helicopter, 939 Five Oaks Avenue, Dayton, Ohio.

R. T. Bloxon.

(Inactive).

Black Helicopter, Detroit, Michigan.

(Inactive).

Borg Warner, 3l0 S. Michigan Avenue, Chicago, Illinois.

Chief Helicopter Engineer - S. P. Nemeth.

Active during World War - 2.

Bowker, Robert C., South Street, Medfield, Massachusetts.

Convertaplane project during World War - 2.

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16

in. HELICOPTER MANUFACTURERS AND DESIGNERS

Bratschie, Amiel, East Palestine, Ohio.

Turbine ship project during World War - 2.

Burch, Lewis D., l6844 Wildemere Road, Detroit, Michigan.

Flying disk with lifting screw project during World War - 2.

Carlat Development Corp., Beechhurst, Queens, New York.

President - Serge Trey.

Helicopter with boundary layer control rotor. Active l949.

Ralph Chapman, Corvalis, Oregon .

(Formerly Beaver Cabinet Works).

Synchropter built during World War - 2.

Helicopter activities dropped around l946.

Clark Electronics and Aviation Corp., 699 Madison Avenue, New York, N. Y.

President and Chief Engineer - Ralph A. Clark; Design Engineers - Ben

Kaufman and John Meador.

Status Unknown.

Commonwealth Aircraft, Kansas City, Kansas.

Helicopter project during World War - 2.

Consolidated - Vultee, Stout Division (q.v.)

Had helicopter project during the past War.

Convertoplane Corporation, 24 E. 80th Street, New York 2l, N. Y. (l949 Add.)

President - G. Her rick.

Cook Engineering, 823-83l East 3lst Street, Los Angeles, California.

Had a l943 project for magnus effect rotor aircraft.

Curtis Wright Industries, l240 San Fernando Road, Los Angeles 3l, California.

(Valley Bid., Puente Calif.).

Assistant Manager - H. W. Lord.

(Inactive by l949).

Curtiss Wright Corporation (Development Division), Bloomfield, New Jersey.

Doman helicopter licensee. Independent rotary wing research during World

War - 2 and thereafter. Firm sponsored the Bleecker helicopter of l930.

Delackner Helicopters, Inc., ll5 Main St., Tuckahoe, New York.

President - Donald Delackner.

Status unknown.

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17

m. HELICOPTER MANUFACTURERS AND DESIGNERS

Doman Helicopters, Inc., Municipal Airport, P.O.Box 603, Danbury, Conn.

President and Chief Engineer - GliddenS. Doman; Treasurer - Harry L.

Brown; Sales Engineer - Giles N. Montgomery.

In Development: 7-place commercial helicopter.

Douglas Aircraft Company, Santa Monica, California.

Theoretical studies on the helicopter in l943.

Dow Chemical Company, Midland, Michigan.

Jet propulsion studies in l943 by Prof. E. Stalker.

Eastern Rotor craft Company, Neshaminy, Bucks County, Pennsylvania.

Mail: Box l7l, Willow Grove, Pennsylvania.

Partners - J. P. Perry and J. R. Huber.

Manufacturers of rotary wing glider, transmissions.

Eastern Sales Engineering Company, Philadelphia, Pa.

Enea Bossi, and D. K. Jovanovich. Coaxial rotor helicopter project, l945.

(Company dissolved).

Engineering Development Associates, 3723A Wiltshire Blvd., Los Angeles,

California.

R. E. Marquardt.

Became Marquardt Aircraft Company.

Exel, George, 377 Lake View Avenue, Clifton, New Jersey.

First of a series of helicopters was built in l920.

Current project is a tail rotor machine.

Firestone Aircraft Company (Formerly G. & A.) Willow Grove, Pa.

(Dissolved).

Kaiser-Fleetwings, Bristol, Pennsylvania.

Built tail rotor machine in l944 and Hiller coaxial rotor helicopter in l945.

Fleetwings Division now dissolved.

G. & A. Aircraft, Inc., Willow Grove, Pennsylvania.

Formerly Pitcairn, became Firestone Aircraft Company. The latter firm was

dissolved by Firestone when it dropped its aircraft activities.

Gazda Engineering, 2l07 Industrial Trust Bldg., Providence, Rhode Island.

Antoine Gazda.

General Aircraft Corporation, Astoria, Long Island, New York .

(Status unknown).

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IE. HELICOPTER MANUFACTURERS AND DESIGNERS "

General Electric Company, Schenectady, New York.

Convertaplane project during the late War.

Tested Doblhoff helicopter and a rotary wing glider of their own design.

Developing jet system for XH-l7 helicopter.

General Helicopters, Inc., New York l0, New York.

Chief Research Engineer - V. A. Ivanoff.

Active l949.

Gyrodyne Company of America, Inc., 80 Wall Street, New York 5, New York.

Engineering Office - 25 East Marie Street, Hicksville, New York.

President - Peter J. Papadakos; Vice Pres.-Finance - Nicholas Xanthaky;

Treasurer - Peter V. Struby; Secretary - Kenneth M. Bovee; Ass't to

President - Nicholas J. Papadakos.

Design and manufacture of gvrodvnes and helicopters.

Haig Helicopter Company, Oakland Municipal Airport, Oakland, California.

President - C. R. Haig, Jr.

(Inactive by l949).

Halligan, Russell, Beardstown, Illinois.

Propeller driven rotor helicopter built prior to World War - 2.

(Inactive).

Hamilton Aero Ltd., 220 No. Cannon Drive, Beverly Hills, California.

F. Knoll.

Wartime helicopter project.

(Inactive).

Hamilton Helicopter, 6005 Eastern Avenue, Baltimore, Maryland.

Coaxial rotor prototype built.

(Inactive by l949).

Harlow Aircraft, Alhambra, California.

Jet propelled helicopter under development in l943.

Hartwig-Little Company, San Antonio, Texas.

(Inactive by l949).

Hays, R. R., Lawrence, Kansas.

Hays has been active for a number of years with reduced model testing.

During the War, a midget helicopter was proposed and parts were built. To

date, however, no full scale machine has been built.

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HI. HELICOPTER MANUFACTURERS AND DESIGNERS 19

Helicopter Consulting Forum, 6 Sickles Avenue, New Rochelle, New York.

William Hunt, J. Friedenberg, B. Engel and C. Mayerson.

(Inactive).

Helicopter Corporation of America, 35-ll Farrington St., Flushing, New York.

President - Boris Sergievsky; Vice President - N. de Transene.

Founded by the late G, De Bothezat.

Helicopters, Inc., Stratford, Connecticut.

Formerly Bendix Helicopters, Inc.

Company dissolved in l949.

Helicopter Engineering and Const. Co., 2735 Pawtucket Avenue, East

Providence, Rhode Island.

President - Harold E. Lemont, Jr.

(Dissolved).

Helicopter Engineering and Research Company, Bluebell, Pennsylvania.

D. K. Jovanovich, F. Koslowski and G. Towns en.

In l949, the JOV-3 helicopter was taken over by McCulloch for development.

Helicopter Research Corporation, 2900 Lewis Tower Bldg., 225 S. l5th Street

Philadelphia, Pa.

Paul W. Thomas.

Helicopter Research Lab., Dayton, Ohio.

(Status Unknown).

Heli-Craft Ltd., Santa Monica, California.

Coaxial rotor helicopter HC-65A under development in l949.

Higgins Helicopter Division, New Orleans, Louisiana.

Enea Bossi, Charles Bossi.

Prototype EB-l built.

Helicopter activities dropped after the War.

Hiller Industries, Berkely, California.

Became United Helicopters, Inc. In l950 commercial name changed to Hiller.

Hoppi-Copters, Inc., Boeing Field, Seattle, Washington.

Founded by H. T. Pentecost. He left the firm in l948. New President is T. H.

MacLachlan.

Hughes Aircraft Company, Florence Avenue at Teale St., Culver City, Calif.

Developing XH-l7 (Formerly Kellett) for U.S. Air Force.

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HI. HELICOPTER MANUFACTURERS AND DESIGNERS 20

Jensen Helicopter Corporation, Tonasket, Washington.

President - Martin Jensen.

Prototype coaxial rotor helicopter built.

Inactive l949.

Jensen's new address is 400 E. 52nd Street, New York, N. Y.

Jet Helicopter Corporation, 724 5th Avenue, New York, l9, N. Y.

President - Stephen Czarnecki.

Reported reactivated in l949.

Kaman Aircraft Corporation, Bradley Field, Windsor Locks, Connecticut.

Personnel: President - C. H. Kaman; Chief Engineer - John O. Emmerson;

Project Engineer - Llewellyn Schuler; Designer - Thomas Granville; Winn

Smith; Al. Alberti; Louis De Rosa; Chief Woodworking Dept. - John Ringso;

Pilot - William Murray; Public Relations - Chas. Kirschner, Jr.

Kellett Aircraft Corporation, Central Airport, Camden, New Jersey.

Moved from North Wales, Pennsylvania to Camden, New Jersey, in l949.

President - W. W. Kellett; Administrative Asst. - J. A. Gasslein, Jr.

Engineers - Phil Spindel, Charles Barnett.

Landgraf Helicopter Co., Inc., Central Avenue at l35th St., Los Angeles 2,

California.

Fred Landgraf.

(Dissolved l949).

Longrie Helicopter Company, Address unknown.

Built a twin engine helicopter in l945.

Mainline Trailer Coach Company, Los Angeles, California

W. E. Case.

Coaxial Rotor helicopter project l943.

Marquardt Aircraft Company, 780l Hayvenhurst Avenue, Van Nuys, California.

Chief Engineer - Roy E. Marquardt.

McCulloch Motors Corporation, 6l0l W. Century Blvd., Los Angeles, Calif.

President - Robert P. McCulloch.

Helicopter under construction at Detroit in l943.

In l949, took over development of Jovanovich JOV-3 helicopter (Helicopter

Engineering and Research Co.).

Morrow Aircraft, Rialto, California.

Helicopter project in l943.

In l944, firm was operated by Fritz Ziebarth Company.

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IE. HELICOPTER MANUFACTURERS AND DESIGNERS

21

McDonnell Aircraft Corporation, Lambert, St. Louis Municipal Airport,

St. Louis, 3, Missouri.

President - J. S. McDonnell, Jr.

Myers Helicopter Company, 35l6 80th Street, Jackson Heights, L.I., New York.

1 * l S " _ " '

Nash-Kelvinator Company, l4250 Plymouth Road, Detroit, Michigan.

Built Sikorsky H-6A- during the War.

Nemeth Helicopter Corporation, 524l Irving Park Road, Chicago, Illinois.

President - Stephen P. Nemeth.

(Active l950).

Nigucol Aircraft Company, 43 W. 55th Street, New York, New York.

(Status Unknown).

Ogburn, W. F., U. Chicago, Illinois.

Coaxial rotor helicopter under development during the War.

Patch, William H., RR-l Minier, Illinois.

(Status Unknown).

P. C. Helicopter Corporation, 2 West 43rd Street, New York l8, New York.

Became Gyrodyne Company of America.

Pennsylvania Aircraft Syndicate Ltd., Wilford Bldg., Philadelphia 4, Pa.

President - E. Burke Wilford.

Penna. Aircraft, 68l6 Market Street, Philadelphia, Pennsylvania.

Bill Swan.

In l943, conducted initial design work on McDonnell lateral rotor helicopter.

Penn Elastic Company, 20 Maple wood Avenue, Philadelphia 44, Pa.

Newby O. Brantley.

Prototype coaxial rotor helicopter built.

Horace T. Pentecost and Associates, Seattle, Washington.

Jet rotor helicopter under development in l949.

Piasecki Helicopter, Inc., Morton, Pennsylvania.

President -F. N. Piasecki; Exec. V. P. & Gen. Mgr. - C. Hart Miller;

Vice Pres. -Harry S. Pack; V.P. & Sec'y - Wesley R. Frysztacki; Vice Pres. -

Elliot Daland; Treas. & Comptroller - W. F. Palmer; Chief Engineer - Lee

Douglas; Ass't Chief Engineer - H. F. Staniek; Production Mgr. - R. M. Mattox

Service Mgr. - T. R. Pierpont; Ass't Service Mgr. - E. A. Ritti; Military

Liaison - H. S. Tremper; Dir. -Public Relations - E. J. Huber; Industrial

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HI. HELICOPTER MANUFACTURERS AND DESIGNERS 22

Relations Director - Walter W. Bishop; Purchasing Agent - L. N. Jason.

P. V. Engineering Forum (F. Piasecki & H. Venzi).

Became Piasecki Helicopters, Inc.

Piatt-Lepage Aircraft Company, Eddystone, Pennsylvania.

President - W. L. LePage; Vice-President - H. H. Piatt.

(Dissolved).

Quaker City School of Aeronautics, Philadelphia, Pa.

HaigKurkjianhas under development a tail rotor helicopter. (l950).

Quantum Research Corporation, ll W. 42nd Street, New York, New York.

(Status Unknown).

R. L. F. Tool & Exp., 73l W. Wilson St., Glendale 3, California.

(Inactive).

Roberts, Roy C. Helicopter Company, Cornishville, Kentucky.

(Active" l9W-

Roe, H. D., l046 Corfu Lane, Los Angeles 24, California.

(Status Unknown).

Rotoplane Corporation, No. Hollywood, California.

Twin rotor tandem study, l943.

(Inactive).

Rotawings, North Wales, Pennsylvania.

President - Agnew E. Larsen.

Became a division of Glen L. Martin Co.

(Inactivated l949).

Rotorcraft Corporation, l204 Airway Drive, Grand Central Airport, Los Angeles

California.

President - Gilbert McGill.

(Active l950).

Roteron Helicopter Corporation, 2439 Fletcher Drive, Los Angeles 26,

California.

William Thomas .

(Inactive by l948).

Rotoplane Corporation, Los Angeles, California.

President - Ralph W. Hilton.

Meshing rotor helicopter under development l943.

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m. HELICOPTER MANUFACTURERS AND DESIGNERS 23

Rotowing Corporation, l40 Cutoff Road, Fort Worth, Texas.

V. P., Chief Engineer - W. L. Rasche.

(Inactive by l948).

Rotor JetSj Inc., 6 Sickles Avenue. New Rochelle, New York .

Jerome Friedenberg.

Safti-Copter Co., 2554 La Fiesta Avenue, Altadena, California.

Leonard E. Mueller.

(Inactive by l948).

Schouw Aeronautical Research, 28950 Lathrup Blvd., Birmingham, Mich.

(Status Unknown).

Seibel Helicopter Company, Wilson Field, Wichita, Kansas.

Charles M. Seibel.

(Active l950).

Sikorsky Aircraft Division, South Avenue, Bridgeport l, .Connecticut.

General Mgr - B. L. Whelan; Exec. Ass't - Frederick G. Dawson; Engineering

Manager - Igor I. Sikorsky; Chief Engineer - Michael E. Gluhareff; Ass't.

Engineering Mgr. - Serge E. Gluhareff; Division Controller - R. A. Aspinwall;

Division Auditor - P. W. Holt; Factory Supt. - Alex Sperber; Purchasing Agent -

C. L. Beers; Public Relations Supvr. - E. M. Benham

Southeastern Research, 7l9 Congress Bldg., Miami 32, Florida.

Took over Stout-Convair Helicopter.

Stalker Development Co., Bay City, Michigan.

Stearman Aircraft, Wichita, Kansas.

Helicopter under design l943.

Stout Research Division Consolidated Vultee .

Wm. B. Stout, Manager.

Built tail rotor helicopter during the War.

Sun Helicopter Company, l603 Willow Street, San Diego 6, California.

Lloyd G. Curtis, President.

Single rotor helicopter built l948.

Teicher Hunt Helicopters, The Cottage, Brooklyn, Connecticut.

President - W. E. Hunt.

Prototype tail rotor helicopter built.

Thompson Helicopter, Los Angeles, California.

Allen Thompson.

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HI. HELICOPTER MANUFACTURERS AND DESIGNERS

Tiedje Machine Shop, Los Angeles, California.

Helicopter project in l943.

Twin Coach Company-Helicopter Division, Kent, Ohio.

Helicopter Engineer Jess Dixon.

Prototype constructed in l944.

The firm dropped its helicopter activities around l946.

United Helicopters, Inc., l350 Willow Road, Palo Alto, California.

President - Stanley Hiller, Jr.; Vice President - A. J. M. Chadwick;

Sec'y-Treasurer - Henry L. Mclntyre; Sales Manager - G. E. Rice.

In Production: Hiller 360, all metal 3-place helicopter with "Rotor Matic"

control.

In Development - UH-l3, UH-l4.

Paul West, New Jersey.

In l943, West had under development a lateral rotor helicopter.

Ziebarth, Fritz Co., San Bernardino, California.

(See Morrow Aircraft Company).

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25

IV. INSTITUTIONS FOR ROTARY WING RESEARCH

Belgium.

Section Technique Aeronautique (S.T.Ae), 72 Chaussee De Waterloo

Rhode St. Genese, Belgium.

Chief of Helicopter Research - N. Florine.

Britain.

Royal Aircraft Establishment, Farnborough, England.

France.

Section Technique Aeronautique, 4 Rue De La Porte D'Issy, Paris, France.

Chief of Rotary Wing Section - Col. R. M. Garry.

Italy.

Instituto Di Aeronautica, Politecnio Di Milano, Milan, Italy.

Netherlands.

Nationaal Luchtvaartlaboratorium, Amsterdam, Netherlands.

Spain.

Patronato Del Instituto De Tecnica Aeronautica, Madrid, Spain.

President of Council - E. Terradas.

U. S. A.

Helicopter Subcommittee, National Advisory Committee for Aeronautics,

l724 F. St. N.W., Washington, D. C.

Members: Richard H. Prewitt, Chairman; Bernard Lindenbaum; P. A.

Simmons; Raymond A. Young; Commander James W.Klopp, U.S.N.; Commander

Frank A. Erickson, USCG; R. B. Maloy; B. L. Springer; R. C. Dingeldein;

F. B. Gustafspn; Michael E. Gluhareff; Charles H. Kaman; Bartram Kelley;

Rene H. Miller; Robert R. Osborn; F. Ni Piasecki.

U. S. A.

Cornell Aeronautical Laboratory, Cornell Research Foundation, Inc.

4455 Genesee Street, Buffalo 5, New York.

U.S.S.R.

Central Aero-Hydrodynamic Institute (Zagi) Moscow, U.S.S.R.

Chief of Rotary Wing Research Boris N. Yuryev.

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V. OPERATORS 26

A. U. S. A.

Aero Club Pittsburgh, Pennsylvania.

CTIffordBall, President.

Helicopter operations in Pittsburgh, Pa.

A_._F. Helicopters Los Angeles, California.

Bell Helicopters.

African Films, Inc. United-Hiller Operator, l949.

Pilot - Barkley Vineyard, St. Joseph, Missouri; V. P. - Roy M. Butcher,

San Jose, California; Cameraman - M. W. Carter, Los Gatos, California;

2nd Cameraman - Ace Williams, New York.

African Heli-Safari Group.

Air Commuting, Inc. New York, New York.

Air Crop Dusters, Inc. Hartford, Connecticut.

Operator IMS'.

Air Industries, Inc. New York, New York

President - Otto Marx, Jr.

Sikorsky S-5l operator.

American Industrial Sales Corp. Sebring, Florida.

Kyle A. Vick, Jr. - United Hiller 360 distributor.

Arizona Helicopter Service Tuscon, Arizona.

E. J. Montgomery, President; Charles E. Marthens, Pilot.

Bakersfield Airpark Bakersfield, California.

United-Hiller operator l949.

Bay Meadows Aviation Corp., Bay Meadows Airport, California.

Bell Aircraft Supply Corporation, Bur bank, California.

Bell Aircraft Supply Corporation, Lafayette, Louisiana.

Joseph S. Dunne, Manager.

Central Aircraft, Inc., Yakima, Washington.

Herman A. Poulin, Director.

Bell 47 operator.

Central Helicopters, Inc., 2ll Madison Avenue, Seattle 4, Washington.

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V. OPERATORS

Currev Flying Service, Galesburv, Illinois.

Bell Dealer - l3T

Dixie Dusters, Inc., Winter Haven, Florida.

Frontier Helicopter Service, Inc. , Buffalo Airport, New York.

SVR Spaulding, Jr. - William G. Johnson.

Bell 47 Operator.

Gannett Newspaper, Rochester, New York.

Bell Operator.

Greyhound Skyways, Subsidiary of Great Lakes Greyhound, Corporation.

S-5l operator l946, on public relations work.

Helicopter Air Transport, Inc., Central Airport, Camden, N. J.

(Out of BusinessX

Helicopter Air Transport Corporation, White Plains, New York.

Helicopter Air Service, Inc., Sky Harbor Airport, Northport, Illinois.

Bell Operator.

President and Treasurer - T. Hamil Reidy; Vice-President - V. M. Harding;

Secretary - C. E. Cessna, Jr.; Chief Pilot and Operations Mgr. -C. W.

Moore; Chief Accountant - Robert W. Keil; Equipment - 6 Bell helicopters.

Helicopters Interstate, Inc., Brooklyn, New York.

Helicopter Service of Syracuse, Syracuse, New York.

Bell helicopter operator l949.

Helicopter Services of California, l Montgomery St., San Francisco 4, Calif.

President - Elmer Schlesinger.

Bell Operator.

Helicopters Interstate, Inc., Cleveland, Ohio.

President - A. A. Walzak.

Helicopter Utilities, Inc., Westchester County Airport, White Plains, N. Y.

United-Hiller Distributor l949.

Murray Greenman; Thomas Hintze; C. L. Morris, Sales.

International Helicopter Transport Co., Buffalo, New York.

Organized l947.

John Fabick Tractor Company, St. Louis, Missouri.

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V. OPERATORS 28

Bell Dealer 1947.

Johnson Flying Service, Missoula, Montana.

Operator i949.

Kern Copters, Bakersfield, California.

Los Angeles Airways, Inc., 590l W. Imperial Hwy, Los Angeles 45, Calif.

President - Clarence M. Belinn; Secretary - Martin J. Burke; Treasurer-

Wayne H. Fisher; Ass't Sec.-Ass't Treas. - Earl E. Jochim; Directors:

Clarence M. Belinn, Martin J. Burke, Wayne H. Fisher, Emerson B. Morgan,

Tames G. Lombard; Purchasing Agent - W. Robert Sadler; Operations Mana-

ger - Fred W. Milan; Gen'l Maint. Supvr. - Stanley E. Brown; Equipment -

5 Sikorsky S-5l's.

Metropolitan Aviation Corp., 500 5th Avenue, New York (Teterboro, N. J.).

Bell Operator.

New England Helicopter Service, Inc., State Airport, Hillsgrove, Rhode

Island.

Bell Operator.

Ne~w York Helicopter Corporation, New York, New York.

New York City Police Department.

Bell Operator.

New York Journal American Newspaper.

Bell 47 Operator.

Ong Aircraft Corporation, Kansas City, Missouri.

Bell 47 Operator.

The Oregon Journal, Portland, Oregon.

Bell Operator.

Pacific Helicopter Company, 687 S. Arroyo Parkway, Pasenda, California.

Southern California Distributor - Hiller 360.

President - Richard S. Dakin.

Peninsular Crop Dusting Service, Ithaca, New York.

Pittsburgh Post Gazette, Pittsburgh, Pennsylvania.

J. D. Reed Company, Houston, Texas.

United-Hiller Operator l949.

Sales Pilot - Wayne Slessinger.

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V. OPERATORS 29

Rick Helicopters, Los Angeles, California.

Bell Operator.

Rotary Wings, Inc., Jensen Field, Sacramento, California.

Headed by H. D. Long and Charles Jensen.

"Distributors for Hiller 360" - N. California, Central California and Nevada.

Rotor Aids, Ventura, California.

Roto-Wing Air Service, Inc., Washington 5, D. C. - Woodward Building.

J. Robert Fischel.

Bell Operator.

Sky Farming, Inc., Corcoran, California.

Southern Arizona Airlines, Inc., Tucson, Arizona.

Bell Operator.

Southern Arizona Airlines, Arizona.

United-Hiller Operator l949.

Stewart Motor Sales Corporation, Indianapolis, Indiana.

Bell Operator.

President - Rollin H. Stewart; Pilot - Robert Gangwish; Pilot - Robert

Angstadt.

Walla-Copters, Inc., Walla-Walla, Washington.

l948.

Western Helicopters Operations, Inc., Coeur d'Alene, Idaho.

F. H. Kelley, Jr., Farragut Smith, Sidney E. Smith, R. N. Edler.

B. FOREIGN

Air-Import S. A., 4, Schwanenplatz, Lucerne, Switzerland.

Alaska Airlines, Helicopter Division, Anchorage, Alaska.

Lou Leavitt, Chief Pilot - l949.

5 - Bell 47's.

British European Airways, Dor land Hall, Regent St., London SW-l, England.

Experimental helicopter unit formed in l947, directed by R. A. C. Brie.

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V. OPERATORS 30

De Havilland Aircraft of Canada, Ltd.

Bell Distributor l948.

Helico-Air, Cormeilles-en-Vexin, France.

French Hiller Dealer & School l949.

Directors: Mr. Boris and Montmarin; Pilot - Mr. Cury.

Helicopter and Rotary Wing Ltd., Cecil Chambers, Strand, London WC-2

England.

F. J. Cable, Director.

Helicopter Services of Hawaii, Hanapepe, Kauai Is., Hawaii.

Operator l949"!

Irving-Bell Helicopter Sales Ltd., Letchworth , Herts, England.

Bell Dealer T94T

Marogyr, Casablanca.

Operator - United 360 l949.

Paul Codos, Owner.

Netherlands Aero and Helicopter Company.

J. Hugenholtz l947.

Osterman Aero, Stockholm, Sweden.

Bell Operator.

Pest Control Ltd., Bourn, Cambridge, England.

Agricultural services using Westland S-5l's.

Photographic Survey Co. Ltd., Toronto, Canada.

Bell Operator.

Sangar Bhanich Co. Ltd., Bankok, Siam.

United (Hiller) Distributor l949.

Skyways Services Ltd., Winnipeg, Manitoba.

Bell Operator.

Tider, Soc. de Resp. Ltda., Buenos Aires, Argentina.

United 3W Operator - Gen'l Mgr. - Senor Daniel Tiphaine.

Trabajos Aereo Y Representacion (Tayr)), Buenos Aires, Argentina.

Bell Operator - Agricultural Service established l947 - Founder, C. J.

Tippett.

Weston Acft. Ltd., Oshawa, Canada.

R. Wooll, Gen'l Mgr. l949. Hiller-360 Dealer.

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VI. POWERPLANT MANUFACTURERS ^

Aircooled Motors (Franklin), Liverpool Road, Syracuse, New York.

Models: 6A8 - 2l5 -57F

6V4 - l78 -B32

6ACV - 403.

Alvis Ltd., Holyhead Rd., Coventry, England.

Continental Aviation & Eng'g. Corp., Muskegon, Michigan.

Models: A-l00-3

C-ll5-3

C-125-3.

Industro-Matic Corporation, l36 W. 52nd Street, New York l9, New York.

Helicopter engine studies.

Jameson Aero Engines Ltd , Ewell, Surrey, England.

Lycoming Division, AVCO Mfg. Corporation, Williamsport 38, Penna.

Model: O-435D.

Pratt and Whitney Aircraft, Div. of United Aircraft Corp., East Hartford,

Connecticut.

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Vn. ROTOR BLADE MANUFACTURERS *

(Note: Some helicopter manufacturers build their own rotor blades.

The names listed here are component manufacturers.)

Dolan, Paul and Company, Essex, Connecticut.

Moulded laminated blades.

(Inactive).

Goodyear Aircraft Corporation, l2l0 Massillon Road, Akron l5, Ohio.

Hedstrom-Union Co., Fitchburg, Massachusetts.

Built R-4 rotor blades.

Hordern-Richmond Ltd., Haddenham, Bucks, England.

Hycon Mfg. Company, 296l E. Colorado St., Pasadena 8, California.

Liberty Products Corporation.

Helicopter rotor blades.

Luscombe Engineering, North Wales, Pennsylvania.

Morris, H. and Co. Ltd., Glasgow, Scotland.

Rotor blades of moulded wood.

Oddie, Bradbury & Cull Ltd., Southampton Airport, Southampton, England.

(InactiveX

Parsons Industries, Inc., Rotary Wing Division, 240 E. l2th St., Traverse

City, Michigan.

Formerly Traverse City Manufacturing Company.

Traverse Bay Manufacturing Company.

(Became Parsons Industries).

Prewitt Aircraft Company, 4l0 South Springfield Road, Clifton Heights, Pa.

Metal rotor blades.

Rheem Manufacturing Company, Philadelphia, Pa.

(Inactive^

Sensenich Corporation, Lancaster, Pennsylvania.

Standard Products Company, Plymouth, Michigan.

Fabricated Nash-Kelvinator metal blades in l945.

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VH. ROTOR BLADE MANUFACTURERS OU

U S. Propellers, Inc., 3270 E. Foothill Blvd., Pasadena 8, California.

Wood rotor blades.

Universal Helicopter Corporation, 45-47 Stanley St., Buffalo, New York.

West, Kenneth L., Annandale, New Jersey.

Blades for Bendix, Jensen, Doman.

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VIE. OTHER COMPONENTS

Aerolab Development Company, l992 Lincoln Avenue, Pasadena 8, Calif.

Aero Supply Mfg. Co., Inc., P. O. Box #402, Corry, Pennsylvania.

Bauer, H., 233 5th Street, Bremerton, Washington.

Rotor and control design.

(Status unknown).

Booth, W. JT., Ltd., l0 High Street, Hampton Wick, Kingston on Thames,

England.

Experimental woodwork.

Bettendorf Company, Bettendorf, Iowa.

Control system for multi-rotor helicopter.

(Inactive).

Breeze Corporations, Inc., 4l S. 6th Street, Newark 7, New Jersey.

President - J. T. Mascuch; Vice-President - J. F. Lucas.

Helicopter rotor hub assembly, control systems, etc.

Detroit Gear Aircraft Parts Div., Borg-Warner Corporation, 670 E.

Woodbridge St., Detroit, 26, Michigan.

Eastern Rotorcraft Company, Mount Carmel, Pennsylvania.

Two speed transmission.

Enterprise Tool and Gear Corporation, 8320 E. McNichols Road, Detroit,

Michigan.

Gears.

Fellows Gear Shaper Company, 78 River Street, Springfield, Vermont,

Foote Brothers, Gear and Machine Corporation, 4545 S. Western Avenue

Chicago 9, Illinois.

General Mills, Inc., Mechanical Division, Minneapolis, Minnesota.

Gleason Works, l000 University Avenue, Rochester, New York.

Gears.

Griswold, F. T., Mfg. Company, 305 W. Lancaster Ave., Wayne, Pa.

Transmissions.

Hartford Special Machinery Company, Hartford, Connecticut.

Transmissions.

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VHI. OTHER COMPONENTS 35

Heim Company, Fairfield, Connecticut.

Bearings.

Houdaille-Hershey Corporation, 437 E. Delavan Avenue, Buffalo ll, New York.

Hydraulic damping device for vertical hinge.

Indiana Gear Works, l458 E. l9th Street, Indianapolis 7, Indiana.

Ellwood Ivins Steel Tube Works, Inc., Oak Lane, Philadelphia 26, Pa.

Spar tubes.

Kollsman Inst. Div., Square D Co., 80-08 45th Avenue, Elmhurst, N. Y.

Rotor tachometers.

Laycock Engineering Co. Ltd., Sheffield 8, England.

Bristol l71 transmission parts.

Luscombe Engineering, North Wales, Pennsylvania.

Airframes for Sikorsky.

Marlin Rockwell Corporation, Jamestown, New York,

Ball and roller bearings l946.

Mercury Clutch Corporation, Canton 6, Ohio.

New Departure Division, Gen. Motors Corp., Bristol, Connecticut.

Bearings.

New Products Corporation, 506 S. Wabash Ave., Chicago, Illinois.

Automatic clutch transmission.

Parsons Industries, Inc., Traverse City, Michigan.

Two speed transmissions.

Pearson, W. H. & Son, Wayne, Pennsylvania.

See Fabriks Aktiebolag, Sandviken, Sweden.

Manufacture spar tubes of special shapes.

Special Machine Tool Engineering Works, l32 Lafayette St., New York l3, N. Y.

Production work on helicopter sub-assemblies l946.

Spicer Manufacturing Corporation, 4l02 Bennett Road, Toledo l, Ohio.

Universal joints and shafts.

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36

Vm. OTHERCOMPONENTS

Stanley Aviation Corporation, l560 Harlem Rd., Buffalo 6, New York.

Robert Stanley, R. Allen Price, Edward Replogle.

Active l950.

Vibradamp, Inc., New Brunswick, New Jersey.

Des. and mfd. XR-8, XR-l0 dampers.

Infinite life predicted as results of 500 hour fatigue test @ 250 CPM.

Western Gear Works, 4l7 Ninth Ave, S., Seattle, Washington.

Also: P. O. Box #l92, Lynwood, California.

Wing, L. J. Mfg. Co., l54 West l4th Street, New York ll, New York.

Fan and cowling assembly.

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37

IX. SOCIETIES

American Helicopter Society, Inc., New Field P. 0. Box #4029,

Bridgeport, Connecticut.

Arena Helicopter Club, .Cincinnati Sports Arena, Cincinnati, Ohio.

Organized l946.

California Helicopter Association

Members: President - James S. Ricklefs (Rick Helicopter); Secretary -

Joseph G. Seward (Rotor Aids); Treasurer - Elynor Rudnick (Kern Copters).

Members: Rotor Aids - Ventura, California

Helicopter Services, - Santa Paula, California.

Kern Copters, Inc., - Baldersfield, California.

Rick Helicopter, - Los Angeles, California.

AF Helicopter, Inc., - Burbank, California.

Sky Farming, - Corcoran, California.

Helicopter Services of California, - San Francisco, California.

Bell Aircraft, - Buffalo (Honorary), California

United Helicopter, - Palo Alto, California (Honorary).

Helicopter Association of Great Britain, Londonderry House, l9 Park Lane,

London W-l, England.

Helicoptere Club De France, l2 Rue Jean-Moinon, Paris l0, France.

S. A. E. Helicopter Committee Society of Automotive Engineers,

29 West 39th Street, New York 18, New York.

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QO

X. PERSONALITIES ( PAST AND PRESENT ) UO

(Note: The year listed indicates the approximate date of the informa-

tion. )

Ahgren, Halvard Atherholt, John B.

Pilot Rotawings-Div., Glen L. Martin

Osterman Aero Company North Wales, Pennsylvania

Stockholm, Sweden l947

l944

Avery, Harold T.

Alex, Ralph P. Chief Engineer

Project Engineer Marchant Calculating Machine Co.

Sikorsky Aircraft l475 Powell Street

Bridgeport, Connecticut Oakland 8, California

l949 l949

Alfaro, Heraclio

Engineer

Guetaria-2

San Sebastian, Spain

l949

Built Alfaro autogiro in the U. S.

during the early thirties.

Anderson, C. R.

Engineer

l65 Patterson Avenue

Stratford, Connecticut

Formerly with Pitcairn and Bendix

Helicopter Company

Andrews, E. F.

E. F. Andrews Labs

Chicago, Illinois

l949

Antrim, A. D., Jr.

Design Engineer

Piasecki Helicopter Corporation

Morton, Pennsylvania

l947

Arkell, Basil H.

Fairey Aviation Co. Ltd.

Middlesex, England

1946

Axe, Robert G.

Engineer

3750 W. 64 Place

Chicago 29, Illinois

l947

Baas, Philip B. R., Lt. Comdr.,

United States Navy

Piasecki Helicopter Corporation

Morton, Pennsylvania

l947

Baldwin, Earl S.

Chairman

American Helicopter Company

Lamita, California

l949

Barclay, F. Dorn

Research Director

American Helicopter Company

Lamita, California

l949

Formerly Project Officer for U. S.

Navy Bureau of Aeronautics and

former research director for

Piasecki

Barnaby, Ralph S., Capt.

United States Navy (Retired)

Ch., Electronics & Instruments Div.

Franklin Institute Lab. for ResearchGen

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X. PERSONALITIES ( PAST AND PRESENT ) 39

and Development

Bell, Lawrence D.

Philadelphia, Pennsylvania

President and Gen'l Manager

l949

Bell Aircraft Company

Barnett, C. A.

Buffalo, New York

Project Engineer XH-l7

Bell, Robert C., Jr.

Kellett Aircraft Company

Director

l948

Doman Helicopter Corporation

Baumgartl, Paul

Danbury, Connecticut

Chief Engineer

Bernard, M. Jacques

Helicopter Research Department

82 Rue Curial

Fabrica Do Galeao

Paris, France

Rio De Janiero, Brazil

l945

Bayley, W. Hewlett

Benham. Edward M.

Duncan & Bayley

Public Relations Supvr.

Buffalo, New York

Sikorsky Aircraft

l949

South Ave., Bridgeport, Connecticut

Beckwith, Sterling

l948

Engineer

Bennett, James A. J.

Allis Chalmers Manufacturing Co.

Chief Engineer, Helicopter Division

Box 5l2, Milwaukee l, Wisconsin

Fairey Aviation Co. Ltd.

1948

Hayes, Middlesex, England

Engineer on Allis-Chalmers helicopter

l949

project.

With G and J. Weir Ltd. and Cierva

Autogiro Co. l930-39.

Beigher, J. E.

Vice-President of American Helicop-

Sikorsky Aircraft Division

ter Society l944-45.

Stratford, Connecticut

Member of British Helicopter Mission

l948

to U. S. A. in l947.

Designer of FB-l Girodyne for Fairey

Beighle, Jackson F.

Company

Sikorsky Aircraft

Bridgeport, Connecticut

Bergerot, Robert

l947

Engineer

SNCAC, Division Giraviation

Belinn, C. M.

Paris, France

President

l949

Los Angeles Airways, Inc.

590l W. Imperial Highway

Berkowitz, Samuel M.

Los Angeles 45, California

Head, Aero Engineering Group

l949

Franklin Institute, Philadelphia 30, Pa.

l949

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40

X. PERSONALITIES ( PAST AND PRESENT )

Berliner, Henry A.

Chairman of Board

Eng'g and Research Corp.

Riverdale, Maryland

l949

Built helicopters during the l920's

Besler, Max

Gyrodyne Co. of America, Inc.

Hicksville, New York

l949

Betstiher, D. W.

Piasecki Helicopter

Morton, Pennsylvania

1948

Black, Dale H.

Research Engineer

American Helicopter Company

900 No. La Brea

Inglewood, California

l947

Blanco, Pedro

c/o Plaza Gabriel Miro l

Madrid, Spain

1948

Bleecker, Maitland B.

Convertaplane Corporation

l8 E. 83rd St., New York

l948

Built a helicopter for Curtiss-

Wright in the early thirties.

Bode, Karl

Engineer-Pilot

Focke and Wulf Company

Bremen, Germany

In l939, established altitude record

of l1,243 feet in Focke FW-6l heli-

copter.

Bolas, Harold

c/o Crouch-Bolas Aircraft App. Ltd

8 Park Lane, London Wl, England

l949

In the mid-l930's,R. J.G. Crouch and|

H. Bolos built a convertible type

aircraft called "Dragonfly" in

Rhode Island.

Bossi, Enea

Engineer

North Wales, Pennsylvania

l950

Pioneer Italian airplane builder.

During the late War, he designed

the Higgins helicopters. Later, he

established his own firm,. He is

currentlv inactive in the rotarv wing

field.

Bott, Alan R.

Director of Research Eng.

Doman-Frasier Helicopter

Airport, Danbury, Connecticut

l948

Former Lieutenant in U.S.N. at

Flight Test, U.S.N. A.T.C.,

Patuxent River, Maryland.

Bovee, Kenneth M.

Secretary

Gyrodyne Co. of America, Inc.

80 Wall Street, New York City, N. Y.

Formerly with Bell Aircraft

Brantley, Newby O