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,. REPORT NUMBER 2. GOVT ACCESSION NO. 3. RECIPIENT'S CATALOG NUMBER

TECHNICAL M240RANDUM NO. 74-09

4. TITLE (and Subtitle) 5. TYPE OF REPORT & PERIOD COVERED

CRAMPON FOR USE IN WORLDWIDE MOUNTAIN OPERATIONS Technical MemorandumS. PERFORMING ORG. REPORT NUMBER

7. AUTHOR(s) 0. CONTRACT OR GRANT NUMBER(@)

Norman P. LeibelEnvironment and Survival Branch

SPERFORMING ORGANIZATION NAME AND ADDRESS 10, PROGRAM EL EMENT, PROJEC, 1 ASKi Wra Laboratory AREA & WORK UNIT NUMBERS

US Army Land Warfare Laboratory Task 01-S-74

Aberdeen Proving Ground, MD 21005

11. CCNTROLLING OFFICE NAME AND ADDRESS 12. REPORT DATE

April 197413. NUMBER OF PAGES

1014. MONITORING AGENCY NAME & ADDRESS(f different from Controlling Office) 15. SECURITY CLASS. (of this report)

Unclassified15a. DECL ASSI FIC ATION! DOWNGRADING

SCHEDULE

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Approved for public release; distribution unlimited

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ABEiDE 1 2OVING' GIUIND,; KDO1S. SUPPLEMENTARY NOTES STA-TL

19. KEY WORDS (Continue on reveres side if necessary and identify by block number)

20. ABSTRACT (Continue on reveree mide If necessary nd identify by block number)

The crampon, developed by the US Army Land Warfare Laboratory, was designed

to fit a range of ski and vapor barrier boots used by the US Army. This was

accomplished by designing an adjustment plate which allows variation for size

5 to size 15 extra wide. The crampon is lightweight, durable and provides the

user with the required foot stability to safely cross ice fields. This task

was not completed due to the disestablishment of the Laboratory. Prototype

hardware and a data package have been transferred to the US Army Natick

Laboratories, Natick, Massachusetts.

DD I JAN 73 1473 EDITION OF I NOV 6S IS OBSOLETE iii UNCLASSIFIED

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TABLE OF CONTENTS

Page

REPORT DOCUMENTATION PAGE (DD FORM 1473) iii

DISCUSSION 3

Introduction 3

Description 3

CONCLUSION 3

DISTRIBUTION LIST 7

DISCUSSION

Introduction

The US Army Land Warfare Laboratory (USALWL) initiated a task to designand develop a new crampon based on a Proposed Required Operational Capability(PROC) for a crampon for Army use in mountain operations. Presently, troopsin Alaska are using a commercial crampon which meets most of the requirementsof the PROC. This particular crampon is of foreign manufacture and must bepurchased in various sizes to accommodate the size range of boots used bytroops in the US Army. The US Army Land Warfare Laboratory has designed acrampon which can be adjusted to fit all boot sizes.

Description

The USALWL crampon is very similar in design to the French crampon, Figure 1,presently used by troops in Alaska. The USALWL crampon has ten points,which provide maximum non-slip in all directions and can be adjusted to fitboth the ski boot and vapor barrier boots in sizes 5 to 15 extra wide. Theheel section is basically the same as the French crampon although the strapsupports, Figure 2, have been widened to accept the large heel normallyfound in the large size vapor barrier boots.

Significant differences in the USALWL crampon, Figure 2, are in the solesection of the crampon which allows maximum adjustment at the toe and archareas. The toe area has been designed with a reversible section referredto as a flip/flop, which can be changed by simply removing two screws andturning the section around 1800. The arch area is also adjusted by re-moving two screws and aligning holes in the crampon with holes in theadjusting plate. The cable, which connects the heel pad to the sole pad,is adjustable to accommodate various boot lengths.

Six pairs of prototype crampons, Figure 3, have been fabricated forlaboratory evaluation and will be turned over to the US Army NatickLaboratories for evaluation.

CONCLUSION

The feasibility of designing and fabricating an adjustable crampon hasbeen demonstrated. It is recommended that this development be continuedby the ParentAgency.

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CopiesCommander

1US Army Materiel CommandATTN: AMCDL5001 Eisenhower AvenueAlexandria, VA 22304

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Commander 1US Army Materiel Command

ATTN: AIICRD-P5001 Eisenhower AvenueAlexandria, VA 22304

Director of Defense, Research & Engineering 1Department of DefenseWASH DC 20301

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WASH DC 20301

HQDA (DARD-DDC) 4WASI DC 20310

HQDA (DARD-ARZ-C) 1

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CommanderUS Army Combined Arms Combat Developments Activity (PROV)Fort Leavenworth, KS 66027

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CommanderMASSTERATTN: Combat Service Support & Special Programs DirectorateFort Hood, TX 76544

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US Marine Corps Liaison OfficerAberdeen Proving Ground, MD 21005

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