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UNCLASSIFIED AD 297401 ARMED SERVICES TECHNICAL INFORMATION AGENCY ARLINGTON HALL STATION ARLINGTON 12, VIRGINIA UNCLASSIFIED

It NOTICE: When government or other drawings, specifications or other data are used for any purpose other than in connection with a definitely related government procurement operation, the U. S. Government thereby incurs no responsibility, nor any obligation whatsoever; and the fact that the Government may have formulated, furnished, or in any way supplied the said drawings, specifications, or other data is not to be regarded by implication or otherwise as in any manner licensing the holder or any other person or corporation, or conveying any rights or permission to manufacture, use or sell any patented invention that may in any way be related thereto.

LR 61-106 TEST SET, DROP SHOCK, WOX-126A =ZC "" 0: ASTifR C-0 S T' N O L NOVEMBER 196-2 I S WTES WAL ORDN E LAUTWRY, E O, 0 RELEASED TO 'ASTIA 0 BY Without N AVAL restriations ORD1ANCE LA oratmry For Release to Military and Govermpat ~~Agenci.S Onliy.: - Approvml L- u:,eps required for oleaw S~~ -0 ~A~pprovai to contractors. by BuWeps required tow, SUbseqont releae.

NOLTR 61-106 TEST SET, DROP SHOCK, WOX-126A Prepared by: V. F. DeVost Environment Simulation Division V ABSTRACT: The report describes a portable 70-inch, free-fall drop tester, presents operating instructions, and contains calibration curves. The tester is an adaptation of the Mk 209 Mod 0 Test Set, which it replaces. A wide range of shocks is produced with felt, rubber, and plastic shock pads. At maximum drop height and for payloads of I lb., shocks range in amplitude from 170 g for the softest pad to 3200 g for the hardest pad. The durations of these shocks are 12 ms and 0.6 ms respectively. The maximum allowable load for the test set is L lb. For a 4-lb. payload the maximum impact velocity change experienced by the carriage is 35 fps. The report includes complete drawings on the WOX-126A Test Set and calibration information on the Mk 209 Nod 0. U. S. NAVAL ORDNANCE LABORATORY WHITE OAK, MARYLAND i

NOLTR 61-106 20 November 1962 Test Set, Drop Shock, WOX-126A The WOX-126A Tester is not a new design; it is a modification of the Test Set Mk 209 Mod 0. The original Mk 209 structure is unchanged; only the drop-height scale, the test carriage and its stopping device have been replaced, and several worksaving devices have been added. The WOX-126A parts are interchangeable with the Mk 209 parts to permit continued use of the tester for Mk 209 applications. It is intended that the Mk 209 Mod 0 Test Set be eventually phased out and that it be replaced by the WOX-126A for ordnance use. The WOX-126A is an experimental tester and is expected to undergo further changes in keeping with its possible use in future ordnance specifications. Improvements on the Mk 209 Tester were made on a project-need basis over the last two years. The work was supported by projects HASP, FAME 04002, RUSD 2A 001, RUDC 2C 624, NOL 417, SUCCESS, POLARIS Mk 2, and SUBROC. R. E. ODENING Captain, USN Commander d. AA \ V. M. KO By diree ii

NOLTR 61-106 CONTENTS Page INTRODUCTION.......... * 1 DESCRIPTION..... 2 INSTALLATION OF Oi-i29A PARTS....... 4 OPERATING INSTRUCTIONS.... o. o. o....... 6 SELECTING SHOCK PADS...... o......... 7 INSTRUMENTATION.......... o...... CALIBRATION CURVES............. 8 MAINTENANCE...................... 13 REFERENCES... *.... 14 APPENDIX A, CHARACTERISTICS OF TEST SET MK 209 MOD '0.AI APPENDIX B, TEST SET DRAWINGS AND COST OF PARTS....B-1 ILLUSTRATIONS Figure Title Page 1 WOX-126A Test Set... 1 2 Test Carriage.... 2 3 Shock Pads......... o * - * o o.. 3 4 Scale Installation.... o..... 4 5 Scale Clamp.... 4 6 Carriage Changeover..... 5 7 Shock Pad Studs and Clamps,.......... 5 8 Carriage Stop............. 6 9 Strap Clamps.............. 6 10 Instrumentation Trigger..... 8 11 Pad No. i Calibration Curve.. o o...... 9 12 Pad No. 2 Calibration Curve...... o.. 10 13 Pad No. 3 Calibration Curve......... 11 14 Pad No. 4 Calibration Curve. o...... o 12 A-I Oscillograms of Mk 209 Mod 0 Pulses......A-I A-2 Test Set Mk 209 Mod 0 Calibration (Spring A)..A-2 A-3 Test Set Mk 209 Mod 0 Calibration (Spring B).A-3 TABLES Table Title Page I Shock Pad Index o...... 7 BuWeps LD 515960, Test Set, Drop Shock, WOX-126A Parts List and Drawings... B-2 to B-39 0 00 0

NOLTR 61-lo6 TEST SET, DROP SHOCK, WOX-126A INTRODUCTION Background 1. Original testers: The 126-A Test Set is an adaption of a shock tester esilgned nearly 20 years ago by the National Bureau of Standards and later designated as the JAN-S-4 "Shock Testing Mechanism" the tester continues to be specifiea for standard tests on electronic and electrical component parts -V (reference (a), Method 202A, Shock). The JAN-S-44 Tester was modified in 1950 by NOL to increase g its shock output for testing mine and depth charge components. The S..design permits continued use of the tester for MIL-STD-202B applications by making the impact springs interchangeable. The drop tester is designated as the Test Set Mk 209 Mod 0, reference (b). Fig 1 WOX-126A Test Set 2. New Capability: The JAN-A,4. and Mk 209 Mod 0 Testers are primarily for standard tests to screen components for resistance'to shock. The new jtester, Fig. 1, provides the Scapability needed to adequately. conduct component design tests where it is necessary to determine the mechanism of shock failure, and for inertia-sensitivity tests, reference (c), where M, V shock parameters must be varied -. over a wide range to determine the quantitative performance of inertially actuated devices. Also, the increased accuracy of the tester makes it an ideal instrument for calibrating shock recording pickups. The unit-construction carriage has considerably improved the shock pulse chsrac teristics of the tester, and its light weight has reduced impact floor loads. -1

NOLTR 61-106 DESCRIPTION General 3. Interchangeability: The 126A changes do not compromise the original Mk 209 design or its capability. All parts are compatible and interchangeable with the Mod 0 to permit the use of both testers. For convenience, Mod 0 characteristics and calibration curves are presented in Appendix A. Changeover to WOX-126A can be done easily and parts are relatively low cost. The interchangeable parts are the test carriage, the shock pads (interchangeable with the Mod 0 anvil) and the dropheight scale. The original structure of the Mk 209 Test Set remains unchanged - see reference (d). 4. Basic Components: The tester consists of a heavy iron base, a lightweight channel structure supporting two vertical guide rods, a lightweight test carriage designed to slide freely along the guide rods, interchangeable shock pads on which the carriage is dropped, shock pad clamps and a 6 ft drop-height scale. A trigger, parts kit, nut driverstraps and clamps are optional. These items are intended to reduce setup time and eliminate the need for hand tools. The tester rests on a 5/1 6 -in. 'somode"pad to minimize floor loads and prevent shock feedback. 5. Specifications: The drop tester weighs approximately 180 lb., has a 3/4 in. by 7 1/2 in. base, and is 7 1/2 in. high. The machine is designed to handle payloads up to 4 lb, with dimensions up to 3 "/4 in. in diameter Fig. 2 and 3 1/2 in. high. Other dimensional Test Carriage details may be found in Appendix B. Component Details 6. Since the essential parts of the tester consist of the test carriage and the shock pads, these will be discussed in detail; for details on the remainder of the parts, see Appendix B. 7. Test Carriage: The Test Carriage, Fig. 2, is constructed of MIL-N-18352 nylon plastic primarily because the material is lightweight and has good resilient characteristics. The carriage has a 5 in. by 6 in. mounting surface and provides enough head space, at a drop height of 70 in., to mount a test object 3 1/2 in. high. For objects higher than this the drop 2

NOLTR 61-i06 height is reduced accordingly. The convex striking surface of the carriage is designed to increase stiffness and to prevent impact effects (spurious carriage oscillations)- repeatable flat impacts are at best difficult and tend to excite even the stiffest structure into wild oscillation. 8. Shock Pads: Four shock pads have been standardized for the drop tester to cover a practical range of shock parameters. The soft pads (under 1000 g) are fabricated from 75- to 80- durometer rubber and 70- to 72 -durometer felt (Western Felt Works #196 or equal). The hard pads (over 1000 g) are fabricated from MIL-N-18352 nylon plastic and 40- to 45- VI 4NO. Fig. 3 Shock Pads durometer rubber. The four types of shock pads are shown in Fig. 3. Briefly, they are as follows: Pad No. 1 - Rubber with a 1.5 in. hole normal to the direction of impact. The hole reduces the stiffness of the pad to produce a low-g, long-duration pulse. Pad No. 2 - Rubber with a hard felt core. Rubber prevents dishing in of the striking surface (a problem with felt); felt increases resilience and mitigates pad impact effects (solid rubber causes carriage oscillations). Pad No. 3- Rubber, topped with a thin nylon plastic plate. Solid nylon plastic is too stiff under pure compressive impact to produce shocks in the 1000-g range and thin rubber under pure compressive impact mutilates at 1000-g loading. Combining the two materials produced the desired shock parameters. 3

NOLTR 61-106 Pad No. 4 -Solid nylon plastic. This pad is designed to give the maximum shock output for the tester (highest velocity change and acceleration). INSTALLATION OF WOX-126A PARTS 9. A number of Mk 209 Mod 0 Test Sets are currently in use and others are available on loan to DOD agencies and contractors through the Bureau of Weapons. For this reason the following "do it yourself" instructions for the installation of new parts are presented. Except for several holes which must be tapped in the frame of the Test Set, the modifications do not deface or change significantly the original Tester. Refer to Appendix B for the list of parts and drawings. 10. Drop-Height Scale. To install the drop-height scale place the tester on its back and tape the scale to the left column so the end of the scale is 6 in. above the base as shown in Fig. 4. Drill and tap two 4-40 holes in the column using the bottom of each slot in the scale to locate the holes. Fig. 4 Scale Installations Fig. 5 Scale Clamp 11. Scale Clams: To prevent the scale from curling at the ends a pair of clamps have been provided, see Fig. 5. The screws which tighten the clamps need only be brought up snug - forcing them may cause the clamps to break or strip the threads in the screws. 4

NOLTR 61-io6 12. Mod 0 Carriage and Anvil: To remove the Mod 0 carriage loosen the guide rod nuts as shown in Fig. 6 (use the nut driver furnished) and loosen the nuts at the base of the rods - these may be discarded. Unscrew the rods and remove the Mcd 0 carriage. Unscrew anvil bolts and remove tne anvil. 13. Shock Pad Studs and Clamps: Before installing the WOX- 126A carriage insert the shock pad studs as shown in Fig. 7 (these are 1.25 in. long, standara 1/4 in. hollow set screws). Fig. 6 Carriage Changeover Fig. 7 Shock Pad Studs and Clamps Place the desired impact pad over the projecting screws and secure the pads with the pad clamps - use the nut driver. When securing the pads, bring the clamps up tight. If the pads do not rest flat against the base, the pulses produced can be significantly changed. ALWAYS KEEP A PAD IN PLACE ON THE BASE TO PREVENT DAMAGE TO THE STRIKING SURFACE OF THE CARRIAGE. Having placed a pad on the base, set the new carriage on the pad. Insert the rods through the carriage sleeves and re-assemble the guide rods. 5

NOLTR 61-106 OPERATING INSTRUCTIONS 14. Manual Oeration: Operation of the drop tester consists simply or raising the carriage by hand to a desired drop height and suddenly releasing it. Catching the carriage after impact is equally simple since the carriage rebounds well over 50 percent of the drop height. The operator should make several dry run drops to familiarize himself with the "release-arrest' technique before testing components. Fig. 8 Carriage Stop Fig. 9 Strap Clamps 15. Mounting Components: To simplify the job of mounting components and changing shock pads a carriage stop, Fig. 8, has been provided to support the carriage about waist high. Fig. 8 also demonstrates the use of toe clamps for mounting flanged objects. Clamps are provided for flanges up to 3/4 in. thick. Lightweight straps and studs, Fig. 9, are provided for components up to 5 in. high. The studs and bolts furnished with the clamps are designed to be tightened with the fingers only to prevent stripping the threads in the carriage face or crushing delicate components. DO NOT USE PLIERS AND BE SURE STRAP STUDS ARE ENGAGED AT LEAST FOUR THREADS BEFORE TAKING UP ON THE NUTS. A hardened steel template duplicating the hole layout in the top of the carriage is furnished to facililate drilling 6

NOLTR 61-l06 mounting holes in fixtures or components to be tested. Use toe clamp bolts to secure components wherever possible. 16. Drop-Height Scale: The drop-height scale must be adjusted to a new zero position when a pad is changed. To adjust the scale, let the carriage rest on the pad selected and loosen the set screws holding the scale about one-half turn. Raise or lower the scale until the end coincides with the pointer on the carriage. Tighten the clamp screws snug. SELECTING SHOCK PADS 17. To simplify the job of selecting a pad for a particular shock pulse, Table 1 lists the significant shock parameters for each pad. Generally, the amplitude and duration TABLE 1 - SHOCK PAD INDEX _ Shock Form Pad No. Pulse Shape Shock Rank- Duration (t) Factor (K) a 10 in.' - 58 g 12.0 ma 1 0. 51 70 in. - 174 g 11.5 ma 2 10 in. - 145 g 1 5.75 me 70 in. -530 g 4.45 ms 10 in. - 405 g 1.50 me 3 0.57 i70 in. - 1290gl 1.39 ms 110 in. -840 gi 0.86 me 4 i1 0 5 70 in. - 3200g 0.65 ma 'Drop height 2 For 1-lb test load " See paragraph 22 of a shock pulse are the specified parameters. The form factors listed above provide a quick method for determining average 7

NOLTR 61-1o6 accelerations and velocity changes (with 15 percent accuracy) for the shock amplitudes and durations specified. These are the significant parameters in inertia sensitivity testing. INSTRUMENTATION 18. Trigger: It may be necessary for some tests to monitor the Shock or the operation of a device being tested. For this purpose the test set is equipped with a special trigger, Fig. 10 (right column). The device is a normallyclosed, shock-resistant switch designed to be actuated by the carriage Just before carriage impact. The carriage contact is a flexible beryllium copper strip which can deflect as much as 3 in. without permanent set. The unit may be adjusted up and down on the right column to trigger recording instruments as close as 50 microseconds before carriage impact. 19. Accelerometers: The test set was calibrated with an undamped 15,000 cps, 10,000 g crystal accelerometer backed up with a 0.3 critically damped, unbonded strain gage, 3000 cps, 5000 g accelerometer. The recording equipment had a flat frequency response of 10,000 cps or greater. 20. To calibrate the Mk 209 Mod 0 carriage (Appendix A) it was necessary to filter the pulses generated by spring A to determine the fundamental acceleration-time signature (see paragraph A-2). CALIBRATION CURVES* 21. Calibration curves, Fig. 11 through 14, giving shock amplitude and duration are furnished. Each pad was calibrated for payloads of 1 lb, 2 1/2 lb, and 4 lb. Drops were made at 19 in., 20 In., 3 5 in., 50 in., and 65 in. for each curve shown. It should not be necessary to monitor the shock for standard laboratory tests or for screening components in production. Interpolating for test loads between those presented *To be used with the NOL Test Set only. No data are available on shock parameter agreement from machine to machine 8

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NoLTR-61-106 320? 100 it I' AI j0010 2 0 500 70. I Ia 1o ig ~ 44 I alattncuv 1 12 CL z 2

NOLTR 61-106 in the calibration curves should give acceptable accuracy (±5 percent) for most applications; however, dummy weights should be added to bring test loads up to curve values where greater accuracy is required. 22. To determine average acceleration or velocity change from the shock parameters given in the calibration curves, use the form factors (K) given in Table 1. For example, the average acceleration for a pad No. 4 shock pulse of 2000 g is Aaverage = K Apeak K = 0.52 Aav = 0.52 x 2000 = 1040 g Similarly, the velocity change for a 2000 g pulse of 0.74 ma duration is AV = K~pk g t = 0.52 x 2000 x 32.2 x 0.74 x 10 - MAINTENANCE =2A.8fps 23. After about 50 drops, shock pad screws and guide rods should be checked for tightness. After several hundred drops the same check should be made on all bolts and screws. 24. Over a two or three year period, rubber will harden slightly. The soft pads should be checked for durometer hardness at four or five points against that stenciled on the pad. If the durometer hardness changes more than three points, the pads should be replaced. The tester should be recalibrated. 25. When moving or shipping the drop tester lower the carriage so it rests on the shock pad, and wrap tape around the guide rods Just above both carriage sleeies to prevent the carriage from sliding. Tape the carriage stop to the right column. Stow the nut driver in the parts kit and fill the kit with packing material to prevent the mounting hardware from getting scrambled during shipping. If the tester is crated, "this side up" should be appropriately marked on the crate. 13

NOLTR 61-106 (a) REFERENCES MIL-STD-202B, Test Methods for Electronic and Electrical Component Parts (b) NAVWEPS OD 2o944, Test Set Mk 209 Mod 0 (c) NAVORD REPORT 5779, Gravity-Sensitive Component Shock Tester (d) BUORD LD-275962, Test Set Mk 209 Mod 0, Parts List and Drawings (e) NAVORD REPORT 6925, NOL Copper-Ball Accelerometers 14V

NOLTR 61-106 APPENDIX A CHARACTERISTICS OF TEST SET MK 209 MOD 0 A-I. The test set Mk 209 Mod 0 was initially designed to perform tests at shock levels an order of magnitude higher than the maximum shock range of the MIL-STD-202B (Method 202A shock) tester, reference (a). Recently, however, the original 5K lb. per in. spring was incorporated in the Mk 209 design to extend its use to MIL-STD-202B testing-the two springs are now used interchangeably. A-2. Shock oscillograms are presented in Fig. A-1 for comparison of the shock characteristics of the Mod 0 and 126A testers. The fundamental pulse produced by spring A is fairly repeatable; however, the character of the pulse produced by spring B is such that the amplitude and duration of the significant oscillations vary widely from drop to drop. a- IN. DROP CoIN. DROP 0- IN. DROP CiNLBRAXI10W- -ALIBRNTt0N - -r9/cakv; z..,/dihv IO0O/Aiv;,Zmsdiv uii4i::lt F. Goo c-ps LOW-PASS F I Lr F_R NrOOO cps PICKUP 3OO p PICKUP 20- IN. DROP CALIBRATION- CAUL RAXotN - SOg3/div; 2m%/div ZSOOg/div;.5rtvs/div UNF ILTEREDO I 0 c-ps PC.KUP 600 c.ps LOW-PASS SPRING A Carriage and Payload - 9 lb. SPRING B Fig. A-i Oscillograms of Mk 209 Mod 0 Pulses A-3. For convenience, calibration curves, Fig. A-2 and A-3, for the test set Mk 209 Mod 0 are presented. The calibration for the heavy spring was made with Mk 1 Mod 0 C6pper-Ball Accelerometer as specified in reference (b) for spring B. The calibration for the light spring (spring A) was made using the continuous recording equipment described in paragraph 19. The accuracy of the values given is +10 percent. See reference (e) for use of copper-ball acoeterometer as velocity meter. A-1

NOLTR-61-106 120 110 100 90 Ct 0 ++ 20 6 81 10 1 IA-

NOLTR-61 -i06 1,2 100 2 Fig. A-3. DROP HEIGHT (in.) Test Set Mk 209 Mod 0 calibration Curve (Spring B) A -3

NOLTR 61-106 APPENDIX B TEST SET DRAWINGS AND COST OF PARTS Drawings B-I. Drawings and parts for the WOX-126A Test Set are listed in BuWeps LD 515960. Ohe drawings are not authenticated and are submitted herein for reference only.) The drawings are for a complete WOX-126A Tester and are not intended to provide parts for the Mk 209. Parts necessary to conduct Mk 209 Mod 0 tests are the Mk 209 Test Carriage and Anvil. Drawings for these may be found in reference (d), see paragraph 12 of this report for installation instructions. Cost of Parts B-2. Until they are phased out and discontinued for ordnance use, Mk 209 Mod 0 Testers will be available to government and defense agencies, see paragraph 9. It is recommended, therefore, that wherever possible existing Mk 209's be utilized for WOX -126A applications. Costs are given for the parts which convert the Mk 209 to a WOX-126A Tester - costs are for one-unit production. Since the NOL prototype was made up from an existing Mk 209 Tester, no figures are available on a complete WOX-126A Test Set. Essential WOX-126A Parts: Test Carriage -------------------------- $200 Shock Pads ----------------------------- 150 Drop-height Scale ---------------------- 10 Optional Parts: Total $360 Carriage Stop --------------------------$ 15 Trigger --------------------------------- 80 Pad Clamps ------------------------------ 75 Parts Kit ------------------------------ 50 Mounting Hardware (clamps, etc.) ------- 250 Hole Template -------------------------- 0 Nut Driver -------------------------------- 5 Total $515 B-1

NOLTR 61-jlo6 USED OPt LOIS: DEPARTMENT OF THNE NAVY 10001r5.0W BUREAU OF NAVAL WEAPONS C.. m 5'59 m01.-approval DATE US AA MOANC LAORATORY " ITT OAS SILYENVSIllS. IM - - I, 'TOTAL PIECES 0N QUANTITY' ARl AS REC4I1RED FOR ONE SUBJECT ITEM US. U.. LO U I 01 Uo. 2101111198 TOTL PIC 1 FON of n CLk-.Nu FIND REIN 2283354 A 5MBLY -kjaz~alr AwD PAT' ZZ836~~5 I I TOP C-ANL 22S~5II LEYT CWANNr-L N 2265636 1 I Qjr.14 CHANNr.L- ZZ41~.2. -TQp ANGL-C IS Z284G~s. 2 GUICDE. ROD II 5'5 r. 37~I -rs c^rriage. A4!IS 2 6871556 1 I 1- T CARftIAGIL IS 2.2425 2 2 CARRIAGE. GuIDE. I z284256 I I POINCR Z2851.43 I- 4uJ.L 5MBYa U Z Q0 4 7 I 1 CARRIA,.C.r 5170P OZ Z83G44 I I N~ R'CRI (2.2 r-45 I - 1IGER ^&GrLMBLN 2 2 a 3(.4r- I I TRIee.-R 15DY 2I owz824 IIC -rt'cp6qr C0N';ACT52 WUI*3 DYMINSO. ruiiuv. 11. 1i@ 101 1 1 M!U IN U "M1 tieni em vi waft nm owm an a&ip PRCi I I n- 1445 B-2

11UEAM NOLTR 61-106 IEFAUUEUT of Tit NAVY OF NAVAL WEAPONS Coll u11i.juuueps Le Is. uc.test SET, DROP SHOCK, WOX-126A (For reference only) COL NO. 1 313141E 11~E J 6 9 OI I DUO. NO., LONN. ON NO. IRNIRRO E TOTAL M OTHER IETIPICATIO PON O: IgoRo NOMENCLATURE PIMO ROeMREs p "NIII? ASIRNESLY" QUANTITY NO. 2ZS~64Z I I DROP-HrEIGW-T ZICALE. ZZO S5G 2' S. CALECLAmPpjY 2~- Z2.PSkl5r a V, I~- -r - Z~c >2Z "-oce PAD1 *I 2z9 a Z z 2. 5HOCK pako *'2 0'3~Z!SHNOCK P^0-5 2.29OZ'5 I I *..OCIK maci4 z -cq -5 3ZG 'Z 15Ha~CIK.A D HOL-DE.P Za40Z? $2 1 z Tr CL.Amip MeOL.S Z. Z 44 02 4 4 LOrIG Z'rwVAF CLAMP 1 Z272.8402.4 4 4. 5i-0rORAP CLAMP * a2.4oz. z ~ S~A~CLA^MR 2.2.93659 I O1.u. 12.9bhp _ I_ I DOLLE-Y FUW.AtA. _ MI5C 'CONINECTINg, PA*, M 5- -r7-643 2 7- S&CREw.4LF~ SOCMD _T M5-55004I I4 CAPP SCftMW PP-C-82. 3 3."RU&&fLft CA4STER. k TY T', CLASS 0 - _ 3 1 B-3

NOLTR 61-lo6 IEPAIIUIUT IF TII NAVY all 1T. 51596EllII BUREAU OF NAVAL WEAPONS loll" 3~ IIUWUN n, P.C. SUBJEC T : TEST SET, DROP SHOCK.. wox-i26a (For reference only) CCL ma.1 9 IC II - BBS. 0O6. Le No, 0ll mo. REWIUI ToOTAL, M POI ON:sL ITEMS160 S OMMICLATIJIE PINO sag os 7- -c.v II M-S -, 114 0561 0-40 4-5-rr -L-1/ -z m -z. I )-!4.I CAP p an 13_ I? BU)LI t.a^-rrte.1ikl 3 N1IL-El5~ P, G MI-- I,9 PRImL-p ZINC CHROM F- rv1l.ea~~3 PAINT, GL S.S BLAcK 2 31 2 -C., 23 B-4

NomT 6i.-lo6 *DEPARTMENT OF THE NAVY ON. BUREAU OF ORDNANCE WASHINGTON. C. 6ECURITY INFORMATION SUJC.TEST SET, DROP SHOCK, WOX-126A (For reference only) LO ST Cor ~~LI~ P~T p~7c~'! E7C. Et~dI~ SUMMARY OF DRAWINGS LISTS OF DRAWINGS. STANDARDS. SPICIFICATIONS. ANAD BUICATIOUS FOR ONE I~uRI' Vd S.ZZ8535 4; 11IRS.35T. 2.8S(6: 0~ ~ * ISS (6-83 G'57e 5.; I. o 414 l-1-15~.4-25;22.1542 71 a c 0 AL4~ 2z90>Qmxa. 2.9O Is It I'1.liCow3D C-Tt~s. -2 C5. oil P~JFX -S~r- P-1 N~vjJLa ^Ar- S1pp~&y CPpT. #t1il40telp~ja it P,. P-AIL- AmD Z~p %T~JAQ~S~ Mu.. TC-f "AI'.TDI il-zi, M S- 35 2 -o 4-4 III K~s5s5Ca to r,~s"-i~ i~ si7-g-* Ns 3Ij; L AI 32Isj-i "% I P~e~u~a ~Ie1 S 1-IJtawr QF PCJJU b&1-s U.-S. 13L4 all.~ 0 av.,c~ ~p,.rri~ac 4'AI4I ~Tb. 27 N~ ~ 37 Is is 0 POIC-N L-1474 INEV.&51 if)b-5

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NOLTR 61-106 DITIBM ION Naval Mine Engineering Facility Yorktown, Virginia Bureau of Naval Weapons Washington 25, D. C. Attn: Mr. Milstead (RREN-72) R. Mallory and Company, Inc. Indianapolis 6, Indiana Hercules Powder Company Allegany Ballistics Laboratory Cumberland, Maryland Commanding Officer, Picatinny Arsenal Dover, New Jersey (ORDDB -TWO) Hofstra College Hempstead, New York Attn: Engineering Department Veterans Administration Prosthetics Center 252-7th Avenue New York 1, New York Attn: Mr. Otto Rothman Westinghouse Electric Corporation East Pittsburg, Pennsylvania Attn: Composition and Performance Department General Electric Company One River Road Schenectady 5, New York Attn: Technical Literature Component General Electric Company Johnson City, New York Attn: Defense Electronics Division, Armament and Control Section University of California Los Alamos Scientific Laboratory P.O. Box 1663 Los Alamos, New Mexico 1

NOLTR 61-106 University of California Radiation Laboratory P.O. Box 8o8 Livermore, California Radio Corporation of America Department 922 Lancaster, Pennsylvania Attn: Janis 0. Ziedonis U. S. Naval Missile Center Point Mugu, California Attn: Environment Division Carl V. Ryden (Code N3144) Lear, Inc. 110 Ionia Avenue N.W. Grand Rapids 2, Michigan Attn: Mr. Otto Altman Inland Testing Laboratory Cook Technological Center 6o01 Oakton Street Morton Grove, Illinois Attn: Irving F. Hazard Physical Test Department Armstrong Cork Company Lancaster, Pennsylvania Attn: Mr. F. M. Gavan Monterey Research Laboratory, Inc. Box 1309 Monterey, California Attn: Mr. Frank Break Texas Instruments, Inc. 13500 N. Central Expressway Dallas 22, Texas Attn: Mr. C. David McGinnis General Electric Company 1811 Lemoyne Avenue Syracuse, New York Attn: Mr. Murray Epstein Amp, Inc. 2100 Paxton Street Harrisburg, Pennsylvania Attn: Mr. Kermit W. Holler 2

NOLTR 61-106 I.T.T. Kellog 6000 W. 55th Street Odhiaao, Illinois Attn: R. A. Bridge Project SiTu Now York University Research Now York 3 4, New York Attn: P. Christiansen Autonetics, Inc. 3330 East Anaheim Road Anaheim, California Attn: Paul P. Petredes Chief, Bureau of Naval Weapons Washington 25, D. C. Attn- Library, DIS 3 Office of Naval Research Washington 25, D. C. Centro Tecnico de Aeronautica Instituto Techologico de Aeronautica Sao Jose Dos Camps - S. Paulo Brazil Attn: L. X. Nepomuceno IBM Corporation Kingston, New York Attn: Mr. D. S. Bunk r. Abraham Dranetz, Consultant 1191 Donamy Glen Scotch Plains, New Jersey Naval Ordnance Test Station China Lake, California U. S. Naval Underwater Ordnance Station Newport, Rhode Island U. S. Naval Weapons Laboratory Dahlgren, Virginia 3

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