Table Of Content

MEMORANDUM REPORT BRL-MR-3865 R L OTIC FILE COY oB 00 BALLISTIC ANALYSIS OF FIRING TABLE DATA I FOR 155MM, M825 SMOKE PROJECTILE Ott DTIC SELECTE NEAL P. ROBERTS SEPTEMBER 1990 APPROiVED FOR PUBLIC RASE; DISMT.BUTION UNIN t.I . U.S. ARMY LABORATORY COMMAND BALLISTIC RESEARCH LABORATORY ABERDEEN PROVING GROUND, MARYLAND 4 I I .i. NOTICES Destroy this report when it is no longer needed. DO NOT return it to the originator. Additional copies of this report may be obtained from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Road, Springfield, VA 22161. The findings of this report are not to be construed as an official Department of the Army position, unless so designated by other authorized documents. The use of trade names or manufacturers' names in this report does not constitute indorsement of any commercial product. DUIILASlFIED_ _ _ _ _ S Form Approved REPORT DOCUMENTATION PAGE OM[N o OO4-0o188 ~ ~ ~ q~~~twflfl9 h aasf.im ~nn Caon.e OffIWi g &rA 0.. c* "ogth e acn a.c o mf ormsuo^~ .lCfl ecrom menItsreftq a'a,'g IIht b'oen .in!"tt0 , at.. ot"C' *10C Cis@M Of f(cid:127) mInrO;:. oiCiudrfng syggq(cid:127)ttOns tor rotu(in;h 04bWffe(cid:127) r CVsh(cid:127)l1 0 9ton dOead '1 f'(. D,:t'rev to,I0r IOtmalOn Oec'.rofOs afto Remaict(cid:127) 5 j(cid:127)e',.'- o"11"qhg tiWaS.teI 1204 AllInglo- VA 21202-4302 8-6 c th'O 1e oIk04a.*.#,e '.' f!ad 6..OgC liep' e 0' c a., 91o,al e~IO(00C-1.1 1)OWta shjgto' DC2 "513 1. AGENCY USE ONLY (Le.ve blank) • 2.eREPORT DATE 9J 3 REPORT TYPE A DA-TES COVERED 4, TITLE AND SUBTITLE S. FUNDING NUMBERS Ballistic Analysis of Firing Table Data for 155mm, M825 Smoke Projectile 1L162618AH80 6. AUTHOR(S) Neal P. Roberts 7. PERFORMING ORGANIZATION NAME(S) AND ADORESS(ES) 8. PERFORMING ORGANIZATION REPORT NUMBER g- SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSORING MONITORING U.S. Army Ballistic Research Laboratory AGENCY REPORT NUMBER ATTN: SLCBR-DD-T BRL-R-3865 Aberdeen Proving Ground, MD 21005-5066 11. SUPPLEPENTARY NCTES 12o. DISTRIBUTION AVAILAB!LITY STATEMENT 12b. DISTRIBUTION CODE Approved for public release; distribution is unlimited 13. ABSTRACT (Maximum 200 vvordS) / "-7.i ring Table Range Data from Dugway ProviDg Ground, Ur..h,"for the developmental 155mm, M825 Modified Product Improved Smoke Projectile has been reduced and analyzed. Ballistic comparisons between all base versions of the M825 projectile as well as with the M483A. projectile are discussed. The concept of Ballistic Match/Similitude between two rounds is also expounded upon. ., I / 14. SUBJECT TERMS S. NUMBER OF PAGES Ballistics 155mm Projectile, Smoke, M825 16 Analysis Developmental '16. PRICE CODE Firing Table Data I 17. S[C,,aP,!Tv CLA;SIFICATION 18. SECURITY CLASSIFICATION 19 SECURITY CLASSIFICATION 20. LIMITATION OF ABSTRACI OF REPORT OF THIS PAGE OF ABSTRACT UNCLASSIFIED UNCLASSIFIED UNCLASSIFIED SAR NSN 7540-O¶-280-5500 StandarO Form 298 (Rev 2-89) UNCLASSIFIED .9...102 I NF Acknowledgement The author would like to express his gratitude to Messrs. Jim Matts, Robert McCoy and Robert Lieske who reviewed this document and whose suggestions for changes were invariably helpful. Aooesslon For lITIS GRAI DTIC TAB 0l Unannounced 0l DTIC Justification COP' Y By 6 Dist ributiLo/ Availability CodeN Avail and/or Dist special INTENTIONALLY LEFT BLANK. iv Table of Contents List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii List of Tables ............ ................................... ix I. Introduction ............ .................................... 1 II. Review of Previous Testing .......... ........................... 2 III. Results of Test ............. .................................. 2 1. Muzzle Velocity ........... ............................... 2 2. Ballistic ('oeficient ........... .............................. 3 3. Lift Factor ............ ................................... 3 4. Maximum Charge .......... ............................... 3 5. Correction Factors ........... .............................. 3 6. Precision Probable Error ........ ........................... 4 IV. Conclusions. ............. .................................... 4 References ............ ..................................... 29 Distribution List ............. ................................. 31 V IN'TENTIONALLY LEFT BLANK. vi p List of Figures Figure Page 1 Cut away view of the M825 ....... ............................ 5 2 Base section views - M825 .......... ............................ 0 3 Ballistic coefficient (c) multiplier vs. muzzle velocity ..... ............. 7 4 Lift factor (1) multiplier vs. muzzle velocity ..... ................... 8 5 Ballistic coefficient (c) vs. quadrant elevation - charge 8R ..... .......... 9 6 Lift factor (1) vs. quadrant elevation - charge 8R ..... ............... 10 7 Ballistic coefficient (c) multiplier vs. quadrant elevation - charge 3W ... 11 8 Ballistic coelficieni (c) multiplier vs. quadrant elevation - charge 4W . , . . 12 9 Ballistic coefficient (c) multiplier vs. quadrant elevation - charge 5W . . . . 13 10 Ballistic coeflicient (c) multiplier vs. quadrant elevation - charge 6W . . . . 14 11 Baiiistit coefficient (c) multiplier vs. quadrant elevation - charge 7W . . . . 15 12 Ballistic coefficient (c) multiplier vs. quadrant elevation - charge 7R . ... 16 13 Lift factor (I) multiplier vs. quadrant elevation - charge 3W ............. 17 14 Lift factor (I) multiplier vs. quadrant elevation - charge 4W . ........... 18 1.5 Lift factor (1) multiplier vs. quadrant elevation - charge 5W ............. 19 16 Lift factor (1) multiplier vs. quadrant elevation - charge 6W. ........... 20 17 Lift factor (1) multiplier vs. quadrant elevation - charge 7W ............ 21 18 Lift factor (1) multiplier vs. quadrant elevation - charge 7R ............. 22 vii INTENTIONALLY LEFT BLANK. viii