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unclassified

confidential

Approved for public release; distribution isunlimited.

Controlling DoD Organization: Bureau ofOrdnance, Department of the Navy, Washington,DC 20350.

28 Feb 1965, DoDD 5200.10; NSWC ltr dtd 4 Mar1976

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DEFENSE DOCUMENTATION CENTER FOR

SCIENTIFIC AND TECHNICAL INFORMATION

CAMERON STATION ALEXANDRIA VIRGINIA

DOWHGRADED AT 3 TOAR INTERVALS: DECLASSIFIED ATTER 12 YEARS

DOD DIR 520010

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THIS REPORT HAS BEEN DECLASSIFIED AND CLEARED FOR PUBLIC RELEASE.

DISTRIBUTION A APPROVED FOR PUBLIC RELEASE;

DISTRIBUTION UNLIMITED.

COlN*' SKCURJ«|r?rynp»* m T ~& *

U S NAVAL PROVING GROUND

DAHLGREN, VIRGINIA

REPORT NO. 1094

PROJECTILES AND WARHEAD FRAGMENTATION

2"4th Partial Report

TESTS OF

ENERGA ANII-TANK RIFLE GRENADES

FINAL Report

Copy No. 12

Task Assignment NP6-Re2c-3S-1-53

Classification CONFIDENTIAL SECURITY INFORMATION x. •

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d COHFIDENTIAL NPG REPORT NO. 1094

Teats of Energa Anti-Tank Rifle Grenades

1* This test was conducted to determine lethal rangas of the nose, beam, and base fragments of the Energa anti-tank rifle grenade.

2* T*« maximum range for penetration of 0V040 Aural by a fragment from a statically detonated Energa grenade is between 2/5 feet and 300 feet for the nose fragments, between Vy feet and 20 feet for the beam spray fragments, and between 20 feet and 30 feet for the base fragments.

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CONFIDENTIAL 8BCURITY INFORMATION

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Tests of Energe Anti-Tank Rifle Grenades

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SYNOPSIS . ...... 1

TABLE OP CONTENTS 9 2

AUTHORITY • 3

R3FERBNCES • • • • .....««... 3

BACKGROUND 3

OBJECT OF TEST ........ ••••• 3

PERIOD OF TEST •••• 3

DESCRIPTION OF ITEK UNDER TEST 4

PROCEDURE* 4

RESULTS AND DISCUSSION . 4

CONCLUSIONS. . 4

APPENDIX A - SNERGA ANTI-TANK RIFLE GRENADES . . .FIGURES 1-2 (Incl)

APPENDIX B - FRAGMENT P&F.TRATION DATA TABLE I

APPENDIX C - DISTRIBUTION. 1-2 (Incl)

CONFIDENTIAL SECURITY INFORMATION

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0 0 CONFIDENTIAL NPO REPORT NO. 1094

Tests of Energa Anti-Tank Rifle Grenades

PART B

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1. AUTHORITY:

This test T7?.s authorized by reference (a) and conducted under Task Assignment NPG-Re2c-35-l-53, reference (b)«

2. REFERENCES:

a. BUQRD conf ltr S78-K31) Re2c-JSM:rJb Ser 45688 of 6 October 1952

b. BUORD conf ltr NP9 Re2c-JSM:rjb Ser 42665 of 29 July 1952

c. Dept of the Army Technical Bulletin TB ORD 404 of 29 January 1951

3* BACKGROUND:

In association with the development of an aircraft launcher for the Energa anti-tank rifle grenade for the Marine Corps, the Bureau of Ordnance directed the Naval Proving Ground to conduct tests to determine the safety of airborne aircraft against the fragments of the grenade.

4# 0BJ3CT OP TEST:

This test ras conducted to determine the lethal fragment range of the nose, beam, and base fragments of the Energa anti-tank rifle grenade.

5« PERIOD OP TEST:

a. Pate Project Letter b. Date necessary Material Received c. Date Commenced Test d« Date Completed Test

6 October 1952 23 October 1952 3 December 1952 4 December 1952

CONFIDENTIAL SECURITY INFORMATION

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(V © COHFXDBHTIAL HPQ REPORT NO. 1094

Teats of Energa Anti-Tank Rifle Grenades

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paam of as 6« DESCRIPTION OF ITEM UNPER TEST:

The Snerga anti-tank rifle grenade, RE, AT, T-41, is a fin stabHzed, point initiated, base-detonated* shaped charge grenade containing 0.73 lbs. of RDX and TNT and weighing a total of 1*42 lbs. Three (3) fuzing systems, contractors drawing numbers 20001, 2000g, and 2000fx, were used in this test. Fuze assembly drawings aro shown In Figures 1 and 2.

7. PROCEDURE:

Bach grenade was set in a horizontal position on a 4* high wooden stand. Dural plates, 0'.'040 thick, were places at varying distances from the grenade to catch the nose (or Jet) fragments (0 ), the beam spray (90 ) fragments and the base (180 ) fragments. These plates (4' x 12') wore placod sometimes horizontally end sometimes vertically and wero moved to various dlstancos until the limits of fragment penetration were obtained.

8. RESULTS. AMD DISCUSSION:

Twenty-eight (28) rounds of Enorga anti-tank rifle grenados. HE, AT, T-41, wore statically detonated to determine the maximum lethal range and minimum safety distance against oy040 dural aluminum plate. Dotailsd penetration data aro given in Table I. Some fragment pene- trations wero obtained from the nose (0*) spray at 27$ foot distance, from the boam (90°) spray at 15 foot, and from tho baso (ISO*) apray at 20 feet. No penetrations wore observod at 3CO foot from tho nose, at 20 foot from the boam, or at 30 foot from tho base. Variations of tho fuzing system did not affect the fragment penetration rosuits.

9» The maximum range for penetration of 08040 dural by a fragment .from a statically dotonatod ISnerga grenade is botwoon 275 foot and }00 feet for tho noso fragments, between 15 feet c-jid 20 foot for tho boam spray fragments, and botwocn 20 foot and 30 feet for tho baso fragments.

CONFIDENTIAL SECURITY INFORMATION 4

CONFIDENTIAL NPG REPORT NO. 109*

Tosts of Enorgc Anti-Tank Rifle Gronades

The teats upon which this report is based wore *on*ucted by: W. URIGET, JR, Fragmentation Firing Officer

Fragmentation Division Terminal Ballistics Department

This report was prepared by: W. WRIGHT, JR, Fragmentation Firing Officer

Fragmentation Division Terminal Ballistics Department

This report was reviewed by: V. PHILIPCHUK, Fragmentation Battery Officer

Fragmentation Division Terminal Ballistics Department

R. H. LYDDANE, Director of Research Terminal Ballistics Department

E. L. LEVSTIK, Lieutenant Commander, USNR Terminal Ballistics Batteries Officer Terminal Ballistics Department

W. B. ROBERTSON, Lieutenant Commander, USN Terminal Ballistics Officer Terminal Ballistics Department

C. C. BRAM3LE, Director of Research, Ordnance Group

APPROVED: J, F. BYRNE Captain, USN Commander, Naval Proving Ground

&P/ZU* E. A. RUCKNER Captain, USN Ordnance Officer 3y direction

CONF:CDENTIAL SECURITY INFORMATION

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CQHFIEBNTIAL »>G REPORT NO. 1094

DAHIGRBN, VIROTNlA

Twenty-fourth Partial Report

on

Projectiles and Warhead Fragmentation

Final Report

on

Tests of Enorga Anti-Tank Rifl« Oroncdes

Project No.s NPG-Re2c-35-l-53 Dr.to: Copy No«i 12. No. of Pago3: J

CONFIDENTIAL SECURITY INFORMATION

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Tests of Euerga Anti-Tank Rifle Grenades

TABLE I

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Plate: 011040 Dural Plate Height: 12* nose. 4' bean, 4' base Plate Width: 8* nose, 12' beam, 12* base

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2000g 20001 2000g 20001 2000g 20001

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Distance (fort)

50 30 40 60

- 60 - 80

- 100 100 100 100 200 20C 300 300 300 300 300 275 275 275 275 275 275 275 300 300 300 300

ffW (9*) No. Pene« fccaUaa

3 30 35

*7 10 8

12 9

30 7 7 0 0 0 0 0 0 2 1 1 1 1 0 0 0 0 0

Distance

15 10 15 15 15 15 15 15 15 10 10 10 20 20 20 20 20 20 20 20 20 20 15 15 20 20 20 20

No. Pene- SasUftB

0 10

2 2 1 2 0 3

Distance No. Pene* IfjfcU tgatloq,,..

2 30 30 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0

10 2 15 2 15 2

** 30 0 ** 40 0

40 0 40 0 30 0 30 0 30 0 30 0 30 0 30 0 30 0 20 1 20 0 20 0 20 0 20 0 20 2 20 0 20 0 15 9 15 5 20 0 20 0 20 0 20 0

* nose plate 12* wide by 4' high - nose plate 12f high by 4' wide

** base plate 12* high by 4' wide

CONFIDENTIAL SECURITY INFORMATION APPENDIX B

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NPG REPORT 3IO« 1094

Anti-Tank Rifle Grenada*

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msmww Bureau of Ordnance:

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Re2 R«3 Rale

Chief of Ordnance Department of the Army Attn: ORDTX-AR

Navy Research Section Library of Congress Washington 25, D. c. (7ia BUORD Re2)

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Commanding General Aberdeen Proving Ground Aberdeen, Maryland Attn: Technical Information Section

Development and Proof Services

Commander, Operational Development Force U. S. Atlantic Fleet, U. S. Naval Base Norfolk 11, Virginia

Naval Ordnance Laboratory

Naval Ordnance Laboratory Attn: Explosives Division Attn: Mr* H. T?« Semon

Picatintiy Arsenal, Dover, N. J. Attn: Technical Division

Reports Office APL/JIW, Silver Spring, Maryland

USKOTS, Inyokern, China Lake, Calif*

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CONFIDENTIAL S8CURITY INFORMATION APPENDIX C

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COKFIBBNTIAL NPQ REPORT NO. 1094

Testa of Snerga Anti-Tank Rifle Grenades

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Inst. for Cooperative Research JHU/1315 St. Paul St. Viet (District Chief. Phila. Ord District

1500 Chestnut St., Phila. 2, Pa. Attni Mr. Edward R. C. Niles)

Commandant of the ttarina Corps Headquarters. tJSUC Washington 25$ D. C.

President, Marine Corps Equipment Board Quantico, Virginia.

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CONFIDENTIAL SECURITY INFORMATION APPENDIX C

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