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This booklet contains reproductions of charts used to i I lustrate the presentations at the 19 5 2 Biennial Inspection of the N AC A's Ames Aero­nautical Laboratory. They have been prepared for your use fol lowing suggestions that such a device might be helpful to those who attend the Inspection. Space has been provided for those· ·who may wish to take notes.

LOADS

AIRCRAFT LOADS FEWER BUMPS AT ALTITUDE

DYNAMIC ' ~60!11~

STEADY i " ­'§;/)LOADS

~1+­~i"I---­'

6 <(

NUMBER OF BUMPS

NOTES

2

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STATIC STABILITY AND CONTROL

CONTROL FORCE INCREASES AT PLAN FORM AFFECTS TRANSONIC SPEEDS CENTER-OF-LIFT TRAVEL

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NOTES

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ANGLE OF ATTACK

9

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AUTOMATIC STABILITY AND CONTROL

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LATERAL OSCILLATION WORLD WAR lI FIGHTER

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LATERAL OSCILLATION FUTURE FIGHTER

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2

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3 4 SECONDS

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NOTES

13

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PROPELLERS AND HELICOPTERS

PROPELLER SLIPSTREAM PROPELLERS INDUCE PRESSURE PULSATIONS

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L&J

lulkI 2 3 4 5 6 I 2 3 4 5 6

FREQUENCYFREQUENCY OF BLADE PASSAGE

NOTES

17

JET HELICOPTERS CARRY WHIRLING AFFECTS LARGE PAYLOADS FOR RAM-JET PERFORMANCE

SHORT DURATIONS IN AIR JET

...... >

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f . PRESSURE JET

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r­...... >a: 0 r­(..')

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ENDURANCE -­ ......

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NOTES

18

LATERAL OSCILLATIONS REDUCED

LATERALCONTROL - ri....__________

ROLLING VELOCITY

THEORY

EXPERIMENT

ROLLING VELOCITY

0 SECONDS

10

NOTES

19

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EFFECT OF SKIN FRICTION ON RANGE

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Nf()RMATION REQUIRED BY DESIGNER

TRANSITION LAMINAR TURBULENT

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SKIN F'RICTION _._. i I, __

.HEAT. ' ' HEAT

NOTES

21

z 0 -I

SKIN

FRI

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N D

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fTI

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)

N

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HIGH SPEED AND RANGE

DRAG OF SUPERSONIC AIRPLANE

ALTITUDE: 35.000 FEET

~ a: 0

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MACH NUMBER

NOTES

PLAN FORM AFFECTS DRAG

10.ooor

cri CD ~

ci 5.000

THRUST~ 0 AVAILABLE

0 .5 1.0 1.5 MACH NUMBER

23

2.0

THIN WINGS FOR HIGH SPEED CONTROL SURFACES INCREASE DRAG

IO.OOO

~5.000

i 0 .5

NOTES

TIICKNESS. PERCENT CHORD

8

5

3

1.0 1.5 2.0 MACH NUMBER

10.000·

<ri ID ..J ci 5.000 <[ 0:: c ~

/

0 .5 1.0 1.5 MACH NUMBER

2.0

24

----

SMALLER WINGS AT HIGHER SPEEDS iseMALL DEGREE OF BlUN

~ ~ a::

VJ"Q ~ -.

~ ~ 0 2 3 4 5 6 7 3 4 5 • 7

MACH NUMBER MACH NUMBER

NOTES

25

z 0 DR

AG

f'T1

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0 ..,, ..,, z ,,, z .....

rn

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(I)

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RESEARCH AIRPLANES

TOOAY·s RESEARCH SHAPES TOMORROW'S AIRPLANES

SPEED AFFECTS DIREGTIONAL STABILITY

...._ """ ...-:: ##

~ :::> ..... 6 ct

- """ '"7

MACH NUMBER MACH NUMBER

NOTES

27

N

CX>

J.

"

,,

NATIONAL ADVISORY COMMITTEE FOR AER ONAUTICS

Jerome C . Hunsaker, Sc . D . , Chairman

Alexander Wetmore, Ph. D . , Vice Chairman Allen V. Astin, Ph. D. Detlev W. Bronk, Ph. D . Major Gen. Laurence C . Craigie, USAF Hon . Thomas W . S. Davis James H. Doolittle, Sc . D. Vice Adm . Matthias B. Gardner, USN Ronald M . Hazen, B.S .

Hugh L . Dryden, Ph. D. Director

John W . Crowley, Jr., B.S . Associate Director for Research

William Littlewood, M.E. Rear Adm. Theodore C . Lonnquest, USN Hon. Donald W. Nyrop Major Gen. Donald L . Putt, USAF Arthur E. Raymond, Sc . D. Francis W. Reichelderfer, Sc. D . Walter G . Whitman, M.S. Theodore P. Wright, Sc D .

John F . Victory, LL.D. Executive Secretary

, E . H. Chamberlin Executive Officer

Ames Aeronautical Laboratory, Moffett Field, California Smith J. DeFrance, LL.D . , Director

Langley Aeronautical Laboratory Langley Field, Virginia H.J. E. Reid, D. Eng., Director

Lewis Flight Propulsion Laboratory 21000 Brookpark Road , Cleveland 11, Ohio Edward R. Sharp, Sc . D., Director

., ...

'