| Ammunition Suite for the FCS Multi-role Armament and Ammunition System (MRAAS) |
20 JUN 2001 |
24 pages |
| Authors:
Ernie Logsdon; ARMY TANK-AUTOMOTIVE COMMAND WARREN MI
|
|
| The Dynamic Modelling of a Novel Design of 120mm APFSDS Training Round |
26 APR 2001 |
|
| Authors:
D. N. Bulman; J. G. Ferries; DANBY ENGINEERING LTD YORKSHIRE (UNITEDKINGDOM)
|
 | A novel design for a low cost, high volume production, APFSDS training round has been proposed for use in 120 mm tank gun systems. The design of this round is unusual because of the method of support between the penetrator and the sabot, and also in the way in which the forces are transmitted to the penetrator in order to accelerate it up the bore. This has meant that the ... |
|
| Initial Evaluation of the CTA International 4O-mm Cased Telescoped Weapon System |
AUG 2000 |
124 pages |
| Authors:
Timothy G. Farrand; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
 | The capability of off-the shelf medium caliber ammunition has been advertised extensively. As the decision about the main armament for imminent medium caliber platforms approaches, more definitive independent analyses of the advertised systems are being conducted. To increase the current database, an evaluation of the 40-mm cased telescoped weapon system (CTWS) was coordinated between the U.S. Government and CTA International (CTAI), a French-United Kingdom company. ... |
|
| Visualization of Weapons Effects for Training and Test & Evaluation - Technical Report (Final) (Computer diskette) |
15 DEC 1999 |
1 pages |
| Authors:
Brian Cahill; DUAL CORP LAKE MARY FL SIMULATION AND TRAINING DIV
|
| ELECTRONIC FILE CHARACTERISTICS: 1 file; MS Word; text, col. ill. PHYSICAL DESCRIPTION: 1 HD computer diskette; 3 1/2 in.; 1.1MB. SYSTEMS DETAIL NOTE: IBM PC-compatible. ABSTRACT: This final technical report is prepared under Contract N00421-99-C-1383 to document and summarize technical accomplishments of the program. The Virtual Environment for Weapons Effects Visualization (VEWEV) is a Phase I effort of the Small Business Innovation Research (SBIR) Topic N99-062 of DoD Program Solicitation ... |
|
| Visualization of Weapons Effects for Training and Test & Evaluation |
09 OCT 1999 |
21 pages |
| Authors:
Brian Cahill; DUAL CORP LAKE MARY FL SIMULATION AND TRAINING DIV
|
| The goals of the project are to: (1) demonstrate that ballistic effects can be visualized, and (2) demonstrate that visualization of ballistics effects can be embedded in a training device. Goal 1 is the primary goal of the Phase 1 effort, and is nearly fully realized, using representative models of a rotary wing air vehicle and a light ground vehicle. Goal 2 will be the main focus of Phase 2. ... |
|
| Dispersion Analysis of the XM881 Armor-Piercing, Fin-Stabilized, Discarding Sabot (APFSDS) Projectile |
JAN 1999 |
35 pages |
| Authors:
Thomas F. Erline; Alan F. Hathaway; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| This study compares the results of a dispersion test with mathematical modeling. A 10-round group of modified 25-mm XM881 armor-piercing, fin-stabilized, discarding sabot (APFSDS) projectiles was fired from the M242 chain gun into a designated target. The mathematical modeling results come from BALANS, a product of Arrow Tech Associates. BALANS is a finite-element lumped parameter code that has the capability to model a flexible projectile ... |
|
| A Ballistic Compressor-Based Setup for the Visualization of Liquid Propellant Jet Combustion Above 100 MPa |
SEP 97 |
44 pages |
| Authors:
Avi Birk; Douglas E. Kooker; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| This report describes the components and operation of an experimental setup for the visualization of liquid propellant (LP) jet combustion at pressures above 100 MPa. The apparatus consists of an in-line ballistic compressor and LP injector. The ballistic compressor, based on a modified 76-mm gun, provides high pressure (55 MPa) clear hot gas for the jet ignition. A piston (projectile) is fired toward a test chamber beyond the barrel's end, ... |
|
| Scale Model Penetration Experiments: Finite Thickness Steel Targets |
MAY 95 |
74 pages |
| Authors:
Scott A. Mullin; Charles E. Anderson Jr.; Andrew J. Plekutowaki; Kevin L. Poormon; Neil W. Blaylock; SOUTHWEST RESEARCH INST SAN ANTONIO TX
|
| A kinetic energy penetration scaling study has been performed with L/ D 20 projectiles into homogeneous RHA-like targets at two impact velocities: 1.5 kmls and 2.2 km/s. The experiments were performed at three scales: nominally 1/ 3, 1/6, and 1/12. The report documents the similitude analysis, discusses issues in scaling using replica models, and the experiments. The report concludes with a discussion of a possible cause of the observed distortions ... |
|
| Front Borerider Design Considerations for a Large-Caliber, Hypervelocity Kinetic Energy (KE) Projectile |
MAR 95 |
45 pages |
| Authors:
Lawrence W. Burton; Christopher J. Jaeger; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| There has been increased interest within the ballistic community to investigate the benefits of launching kinetic energy (KE) projectiles at hypervelocities, velocities in excess of 2 km/s. To facilitate such investigations, KE projectile designers have begun to employ 7-in cannons to achieve the higher desired velocities. Use of such large-bore guns results in increased aerodynamic loading on the front borerider scoop. Test firings of the AF4 7-in projectile resulted in ... |
|
| Development of a Transient Internal Probe Diagnostic |
16 DEC 94 |
42 pages |
| Authors:
Thomas R. Jarboe; Arthur T. Mattick; UNIV OF WASHINGTON SEATTLE AEROSPACE AND ENERGETICS RESEARCH PROGRAM
|
| A research effort was carried out to develop and test key components of the transient internal probe, a diagnostic tool for measuring internal magnetic fields in a plasma. A gasdynamic sabot separation method was developed for discarding the sabot upstream of the plasma. Separation is effected in a vented 50-caliber gun barrel, and the sabot is deflected upstream of the plasma, reliably removing the sabot without disrupting the probe trajectory. ... |
|
| Dynamic Analysis of a Puller Sabot Concept. |
SEP 1993 |
|
| Authors:
Thomas F. Erline; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS TECHNOLOGY DIRECTORATE
|
| Tank weapons have increased lethality in comparison to weapons of the past because of the development of high performance tank cannons and associated ammunition. This increase in lethality is due, in part, by the development of the armor-piercing, fin stabilized, discarding sabot (APFSDS) kinetic energy (KE) projectile. The US ARMY presently uses the M829 as one of its main KE ammunition in the MlAl tank. The M829 projectile sabot configuration ... |
|
| Radial Stiffness Measurements of Several 120mm Projectiles. |
SEP 1993 |
|
| Authors:
David H. Lyon; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS TECHNOLOGY DIRECTORATE
|
| An experimental technique for statically determining the radial stiffness of projectiles is presented. This technique utilizes a length of gun tube into which a modified projectile is fitted. In the case of APFSDS rounds, which contact the bore at two locations, a flat area is machined into the subprojectile at each of these locations. A corresponding clearance hole is drilled through the sabot and gun tube. When assembled, the holes ... |
|
| An Experimental Validation of the SIMBAD Gun Dynamics Simulation Package for Flexible Saboted Long Rod Projectiles. |
SEP 1993 |
|
| Authors:
J. B. Hoyle; D. N. Bulman; ROYAL MILITARY COLL OF SCIENCE SHRIVENHAM (UNITED KINGDOM)
|
| An experimental firing programme has been carried out using the RMCS 30mm Air Powered Gun to study the flexing of saboted long rod penetrators in-bore. A number of special two piece projectiles were developed, each with as nearly as possible the same mass, position of centre of gravity, pitch inertia, and band spacing, but with different rod diameters. A rigid one piece projectile was also developed, that had the same ... |
|
| An Analysis of the 120mm M829 Screening in Operation Desert Storm |
SEP 1993 |
12 pages |
| Authors:
Robert E. Dillon Jr; MILITARY ACADEMY WEST POINT NY
|
| The screening results for the 120mm M829 APFSDS round fired from one tank battalion deployed to Southwest Asia from Germany are presented and analyzed in an effort to explain the deviation from expected accuracy. A background history of the ammunition prior to the screening is presented as well as a detailed description of the screening process, measurements of hits on the screening panels, a statistical analysis of the target impacts, ... |
|
| Experimental Measurement of Tailboom Strain During Charge Ignition |
OCT 91 |
31 pages |
| Authors:
Joseph W. Colburn; Arthur A. Koszoru; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The evolution of Armor Piercing Fin Stabilized Discarding Sabot (APFSDS) projectiles has lead to projectiles which protrude substantially into the gun chamber, affecting igniter design, path of flamespread through the charge, and projectile loading. This study focuses on a method of detecting loading of the projectile tailboom during the early phase of the interior ballistic cycle. Using a clear acrylic gun chamber simulator with an instrumented projectile, charge ignition and ... |
|
| The Effect of Sabot Front Borerider Stiffness on the Launch Dynamics of Fin-Stabilized Kinetic Energy Ammunition |
OCT 89 |
39 pages |
| Authors:
Peter Plostins; Ilmars Celmins; Jonathan Bornstein; J. E. Diebler; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The influence of sabot front borerider stiffness on the launch dynamics of generic 25mm fin-stabilized kinetic energy ammunition has been experimentally examined. The effects of this parameter on the jump and dispersion of the ammunition are presented and analyzed. The major conclusions of this report are that: (1) the linear and angular dynamic state of the projectile at shot exit is not dominated by the motion of the gun muzzle ... |
|
| Root Cause Analysis, Tank Fire Problem, M1A1 Main Battle Tank |
FEB 89 |
88 pages |
| Authors:
John Dowalgo; ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER DOVER NJ ADVANCED S YSTEMS CONCEPTS OFFICE
|
| This analysis identifies the root cause of two M1A1 tank fires involving 120 mm M856 target practice cone stabilized discarding sabot tracer (TPCSDS-T) ammunition during tank gunnery exercises in Germany. The first fire, 4 July 1988, did not involve any personal injury. The fire on 14 August 1988 was lethal, killing the tank commander and gunner. The failure investigation strategy (described in the report) is a method for increasing the ... |
|
| Techniques for the Measurement of Tank Cannon Jump |
DEC 88 |
34 pages |
| Authors:
Jonathan A. Bornstein; Ilmars Celmins; Peter Plostins; E. M. Schmidt; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| To attain the goal of producing tank gun systems possessing enhanced accuracy, an experimental methodology examining the disturbances acting upon a projectile during the launch process and initial stages of free flight has been developed. The disturbances are characterized by the angular deviation of the projectile trajectory from an anticipated line of flight extending between the gun muzzle and the aim point prior to firing the cannon. Gun motion during ... |
|
| Attenuation of Muzzle Blast Using Configurable Mufflers |
NOV 88 |
30 pages |
| Authors:
Kevin S. Fansler; David H. Lyon; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The noise attenuation obtained by using gun silencers configured with different baffle arrangements was investigated. The muffler sizes varied from one to nine bore-and chamber volumes. Both the number and the spacing of the internal baffles were changed to study the attenuation response. The near-field and far-field overpressures were measured at different polar angles about the boreline and attenuation values were obtained. Gages installed through the silencer bodies were used ... |
|
| Predictions of Probabilities of Sustained Fires for Combat Damaged Vehicles |
NOV 1987 |
68 pages |
| Authors:
Anthony E. Finnerty; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| A simple model was used to predict combat induced fires of flammable components (except ammunition) carried on combat vehicles. Five U.S. Army ground vehicles were examined. Eight attacking weapons were considered. Fuel temperatures from 8 C to 53 C were included. The model was based as much as possible on existing data which simply did not cover all situations of interest. Considerable personal judgment was required. Nevertheless, the importance of ... |
|
| Computer Program to Calculate the Physical Properties of One Sabot Petal |
JUN 87 |
|
| Authors:
Richard A. Pennekamp; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| A FORTRAN computer program was developed to calculate the following physical properties of one sabot petal: the mass, the center of mass, and the complete inertia tensor about the center of mass. Only uniform density sabot petals are permitted. Any sabot segment angle is allowed up to 360 degrees, which is a complete body of revolution. This report includes the theory, the inertia tensor transformation equations, and listing of the ... |
|
| The Hugoniots of M-30 Propellant and an Inert Simulator of M-30 |
OCT 1985 |
26 pages |
| Authors:
Vincent M. Boyle; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| There was a need for the equation of state of porous propellant so that code calculations could be made to predict the response of propellant beds to shock pressures of varying intensity and duration. The work reported here is related to the XM1 Compartmentalization Study. One threat to crew and tank is propellant initiation caused by shaped charge jet penetration. What shock pressure conditions will be produced in the propellant ... |
|
| U.S. Army Electromagnetic Launcher Facility |
JAN 85 |
28 pages |
| Authors:
G. L. Ferrentino; J. A. Pappas; H. L. Moore; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| The Electromagnetic Launcher Facility at ARDC is described. Experimental equipment, including the laboratory's MJ railgun testbed and support hardware, are detailed. |
|
| Non-Linear Transient Response of Flat Plate to Air Shock Wave |
DEC 1983 |
|
| Authors:
J. N. Lee; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The non-linear elasto-plastic response of a clamped flat plate to a typical air shock wave were investigated. The nonlinear effects to the plate responses due to the material and geometric nonlinearity were studied. In this study, (1) the necessity of the modification of old armored vehicles was reviewed and (2) the NASTRAN code was employed in this investigation, (3) the theoretical background of the nonlinear transient analysis was described, (4) ... |
|
| Fracture Behavior of a Uranium and a Tungsten Alloy in a Notched Component with Inertia Loading |
DEC 1983 |
36 pages |
| Authors:
J. H. Underwood; M. A. Scavullo; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB
|
| A failure of a prototype long rod penetrator is described, including the stress and fracture analyses performed, the materials and service simulation testing performed, and the fracture toughness and nondestructive inspection requirements which were implemented. Results of a subsequent study are described, which involve the producibility of the long rod penetrator, particularly in relation to the complex fracture toughness testing methods which are required for use with this component. (Author) ... |
|
| First Diagnostic Tests of a 75mm Solid-Fuel Ramjet Tubular Projectile |
JUN 1983 |
|
| Authors:
William H. Mermagen; Rao J. Yalamanchili; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| A series of six prototype 75mm solid-fuel ramjet tubular (SFRJ) projectiles were tested at the Ballistic Research Laboratories Transonic Range Facility during June 1982. The purpose of the tests was to evaluate the performance of the SFRJ projectile with a new cowl configuration and with various size nozzles and inlet steps. The firings were instrumented with cameras and a Hawk radar to provide information on structural integrity, sabot performance, flight ... |
|
| Ball-Actuated Tubular Projectile. |
03 MAY 1983 |
|
| Authors:
William L. Black; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| Tubular projectiles have been known in the prior art since the turn of the century. However, prior art tubular projectiles have required a sabot to be either inserted within the tubular conduit of the projectile or fitted around the base end thereof so as to prevent propelling gases from escaping through the gun barrel by way of the internal conduit passing through said projectile. Although satisfactory for limited purposes, such ... |
|
| Capabilities of the NRCC/NAE (National Research Council Canada/National Aeronautical Establishment) Flight Impact Simulator Facility (Capacite du Simulateur d'Impact en Vol du CNRC/EAN) |
MAY 1983 |
|
| Authors:
J. B. R. Heath; R. W. Gould; G. R. Cowper; NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO)
|
| This report describes the NRCC/NAE Flight Impact Facility in which birdstrike tests on aircraft parts can be carried out. Technical information is given on the capabilities of the pneumatic cannon used to fire real bird carcasses against stationary targets, and on the auxiliary apparatus and instrumentation available at the Facility. (Author) |
|
| Statistical Analysis of Sabot Petal Impact Data for M392 Type Projectiles |
DEC 1982 |
|
| Authors:
Rurik K. Loder; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The impacts of the three sabot petals of M392 type projectiles on a witness board set up eight meters from the muzzle of a 105 mm M68 Tank Cannon were recorded for each round fired as an integral part of a well instrumented firing test. The purpose was to extract from the impact data the rotational velocity of the sabot petal ring at the time of projectile egress from the ... |
|
| Structural Analysis of a Kinetic Energy Projectile During Launch |
JUL 1981 |
25 pages |
| Authors:
G. A. Pflegl; J. H. Underwood; G. P. O'Hara; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB
|
| This paper presents the results of a three phase effort to quantify the structural integrity of a long rod kinetic energy penetrator projectile during launch. The first phase used the finite element method to investigate the two body problem of penetrator and sabot during peak launch loads. This portion of the analysis considered the effect of pressure loading, body forces, and different moduli to determine an estimate of the stresses ... |
|
| Measurements of Dynamic Stress and Strain Components in Targets Struck by Penetrators |
MAR 1981 |
|
| Authors:
Dennis S. Pritchard; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| Stress and strain profiles have been recorded in targets impacted by long-rod kinetic-energy projectiles. Stress gauge records were strongly influenced by the strain field in the target, so compensating strain measurements were used to derive the correct stress profile. Strain-compensated stress gauges in the projectile path measured stress which increased to a value that remained nearly constant until penetration neared the gauge. This constant stress was close to the value ... |
|
| Strain-Gage Techniques for Studies of Projectile Behavior during Penetration. |
FEB 1981 |
|
| Authors:
G. E. Hauver; A. Melani; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The behavior of long steel rods during the penetration of steel armor is being examined by strain measurements performed with foil resistance gages. Experiments in this investigation have employed both forward-ballistic and reverse-ballistic techniques. These techniques are described, and their advantages and disadvantages are discussed. Test data have been examined by a simple-wave analysis, and analytical results are discussed within the context of experimental problems. Preliminary efforts to assess the ... |
|
| Ball Motion in a Ball-Obturated Tubular Projectile. |
JAN 1981 |
|
| Authors:
R. H. Nunn; J. W. Bloomer II; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| When a ball with a concentric hole through it is suspended within a spinning spherical cavity the ball will rotate in such a way that its hole is aligned with the axis of spin of the cavity. If it is mounted within a spinning tubular projectile, the ball can serve as an automatic obturator--plugging the projectile while the two bodies are within the gun barrel and rotating to open the ... |
|
| Wind Tunnel Measurements of Sabot Discard Aerodynamics. |
JUL 1980 |
|
| Authors:
Edward M. Schmidt; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| This report addresses the flow field around a fin stabilized, hypervelocity projectile during the sabot discard process. The mutual interference of the flows around the flight body and three sabot components is examined through wind tunnel tests conducted at a free stream Mach number of 4.5. Since it was not practical to attempt the actuation of all three sabot components, the flow field was simulated by using splitter plates to ... |
|
| Electromagnetic Launchers and Guns. Phase I |
JUN 1980 |
|
| Authors:
H. Kolm; R. Miller; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
| During the first six months (phase one) the group constructed a 65 KJ, 6 kV fast discharge capacitor bank, a 134 kJ, 900 V slow discharge bank, and a 245 kJ, 350 V mobile bank for field launching was started. Also completed was an accelerator test bench and a protected control and observation room instrumented with digital data processing equipment. Studies have been initiated on three acceleration mechanisms, and on ... |
|
| Influence of Nose Shape and L/D Ratio on Projectile Penetration in Frozen Soil |
APR 1980 |
27 pages |
| Authors:
Paul W. Richmond; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
|
| This report presents the results of a laboratory test program designed to determine the applicability of two analytical solutions to projectile penetrations in frozen soils. The test program consisted of firing small caliber cylindrical projectiles into frozen soil targets. Four types of 7. 9-mm-diam projectiles were tested: two with a hemispherical nose the other two flat-nosed, with both long (length/diameter = 4) and short (L/D = 2) versions of each ... |
|
| Role of the Insulating Layer from Ti02-Wax Liner in Reducing Gun Tube Wear. |
APR 1980 |
|
| Authors:
J. Richard Ward; Timothy L. Brosseau; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| Adoption of wear-reducing liners into the 105 mm M392 APDS projectile increased the wear life of the M68 cannon from 100 to 400 rounds for polyurethane foam and 10,000 rounds for TiO2-wax. Heat transfer measurements on the M68 tank cannon concluded the additives reduced heat input and the efficiency of the TiO2-wax rested with the presence of flaps and an insulating deposit formed with successive firings of Ti02-wax rounds. To ... |
|
| Tests of an Aft-Ejection Gun-Probe System at Tonopah Test Range, Nevada. |
MAR 1980 |
|
| Authors:
E. D. Boyer; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The results of initial vertical firing tests of a 5-inch aft-ejection projectile at Sandia's Tonopah Test Range in October, 1977, are presented. Predicted altitudes were attained when projectiles were intact. The radars experienced tracking problems, with these high velocity projectiles, and fuze performance was erratic. The radars tracking problems were resolved during a second series in March 1978. Fuze and projectile problems were not resolved. |
|
| Design and Fabrication of 8-Inch Extended Range Ammunition. Sabot Technology Study |
DEC 1979 |
205 pages |
| Authors:
SABER INDUSTRIES INC NORTH TROY VT
|
| The 8-inch subcaliber ammunition development program described in this report culminated in the successful flight tests at Yuma PG during which the greatly enhanced range capability of the prototype hardware was demonstrated. The range goal of 40 km was exceeded, thereby doubling the range capability of the 8-in. weapon firing the standard M106 round with zone eight charge. Recommendations for future work include: (1) Specific effort should be expended to ... |
|
| Projectile/Sabot Discard Aerodynamics. |
DEC 1979 |
|
| Authors:
David Siegelman; Peter Crimi; AVCO SYSTEMS DIV WILMINGTON MA
|
| An engineering analysis procedure which describes the sabot discard process for gun-launched projectiles has been modified in order to provide an improved tool for investigating the effects of sabot, projectile and launch parameters upon near field dispersive forces. Experimental test data generated by BRL has been used to formulate an improved engineering model of the interaction flow field which develops about the projectile/sabot petal package during the removal process. The ... |
|
| Shaped Charge Jet/Propellant Interactions in a Vented Compartment. |
DEC 1979 |
|
| Authors:
F. T. Brown; W. S. Jackson; R. G. Hippensteel; R. Abrahams; G. Coulter; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| When compartmentalization was first considered for the new main battle tanks (XM1) the Ballistic Research Laboratory with support from the XM1 Project Manager's Office, started to collect baseline data on compartmentalization that could be used in the design and implementation of vented ammunition compartments in the XM1 tank. This report describes a series of tests designed to study the environmental conditions present in a vented ammunition compartment when the propellant ... |
|
| Ammunition. |
06 NOV 1979 |
|
| Authors:
James V. Dunham; DEPARTMENT OF THE ARMY WASHINGTON DC
|
| A round of ammunition adapted to be fired without a detectable visual or aural effect, said round comprising a substantially rigid cartiridge case, a projectile carried by said case, a propellant charge within said case, means whereby said charge may be fired, a piston in said case between said projectile and propellant, a forward portion of said case being provided with a shoulder by means of which said piston may ... |
|
| Projectile. |
20 JUN 1979 |
|
| Authors:
A. Flatau; DEPARTMENT OF THE ARMY WASHINGTON DC
|
| A projectile is adapted to be launched from a barrel. The projectile includes a tubular housing and a structural member. The tubular housing has a forward inlet throat and aft nozzle. An annular layer of solid fuel combustible material is mounted within the housing between the inlet throat and nozzle. The structural member is detachably mounted over the nozzle. The structural member is sized to cover the nozzle so that ... |
|
| Improving the Flight Performance of Projectiles |
MAY 1979 |
69 pages |
| Authors:
Anders S. Platou; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The BRL has been conducting experiments on spin stabilized projectiles using a new boattail shape called the Non-Conical Boattail. This boattail improves the aeroballistic characteristics of the projectile so that longer ranges are attained and heavier payloads can be flown to the target with good accuracy. Many of these experiments have been carried out on 155mm diameter full bore projectiles, but the aerodynamic characteristics can be applied to this configuration ... |
|
| Interior and Terminal Ballistics of 25g Long Rod Penetrators. |
APR 1979 |
90 pages |
| Authors:
Stephen J. Bless ; DAYTON UNIV OH RESEARCH INST
|
| Techniques were developed to launch 25g (L/D = 10) rods from a 50mm propellant gun. The rods were S-7 tool steel, W-Ni-Fe alloy, and Co-bonded WC. The velocities were in the range 1.8 to 2.58 km/s. The rods were launched against 25.4mm 4340 steel plates at 0 deg and 45 deg obliquity, and four 6.35mm 2024 T3 aluminum plates. Behind-target fragment data were obtained by flash x-ray analyses, witness plate ... |
|
| Design of a Low L/D Deep Earth Penetrator |
MAR 1979 |
50 pages |
| Authors:
A. J. Ricchiazzi; E. T. Roecker; C. J. Brown; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| Steel cylindrical and tapered projectiles weighing 425 grams and having a L/D ratio of 5 were fired against concrete/clay targets at striking velocities of 305 and 610 m/s. It was found that low L/D projectiles with tapered bodies appear to be a feasible solution for systems requiring predictable deep earth penetrators. It appears that minimum body taper required for stability probably increases with increasing striking velocity. Path deviation seems to ... |
|
| High Velocity Tapered Bore Gun and Ammunition. |
28 NOV 1978 |
|
| Authors:
George G. Coffield Jr.; Dennis L. Beug; DEPARTMENT OF THE ARMY WASHINGTON DC
|
| A high velocity gun and ammunition wherein the projectile is encased in a deformable material which is squeezed in the tapered bore of the gun to more efficiently utilize expansion gases for accelerating the projectile. (Author) |
|
| Replica Modeling of the Launch and Flight Dynamics of Projectiles. |
SEP 1978 |
|
| Authors:
E. M. Schmidt; B. P. Burns; G. Samos; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| An experimental program has been conducted to determine the limits of applicability of replica model scaling of gun systems. A one-third scale model of the 105mm, M68 tank gun and the M392 kinetic energy projectile are tested. Data are taken on the interior ballistics, muzzle blast, sabot discard dynamics, and exterior ballistics of the model. Comparison of the test results with available information on the full scale system shows that, ... |
|
| Armor Plate Penetrator. |
29 AUG 1978 |
|
| Authors:
Patrick J. Devine; DEPARTMENT OF THE ARMY WASHINGTON DC
|
| This patent discloses armor-piercing rounds having improved penetrators therein providing high axial moments of inertia, and hence, high gyroscopic stability which is attributable to the variously configured non-circular cross-sections of the penetrators. (Author) |
|
| Independent Production Cost Estimate: XM1 Tank Main Armament Evaluation. |
NOV 1977 |
|
| Authors:
Gene Johnston; Gerald Kalal; Joseph Robinson; Laurence Stoll; ARMY ARMAMENT MATERIEL READINESS COMMAND ROCK ISLAND IL COST ANALYSIS DIV
|
| Parametric estimating of the recurring investment costs for tank main armament systems has recently been improved with new modeling techniques, as well as with an improved data base. This report illustrates the use of such estimating techniques as prepared for the XM1 Tank Main Armament Evaluation (TMAE). It also expands parametric estimating techniques to white phosphorous (WP), antipersonnel (APERS), and target practice discarding sabot (TPDS) rounds. The options covered in ... |
|
Reports by Keyword(s)
SABOT PROJECTILES
