| Erosion Modeling of the High Contraction Chromium Plated Crusader Gun System |
JUN 2003 |
36 pages |
| Authors:
S. Sopok; C. Rickard; G. Pflegl; P. O'Hara; S. Dunn; ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY CLOSE COMBAT ARMAMENTS CENTER
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 | Thermal-chemical- mechanical erosion modeling predictions are given for the high contraction chromium plated Crusader gun system based on extensive cannon firing, inspection, characterization, and experimental data. This effort was conducted for the Army's Crusader Program Manager Office and managed by Applied Ordnance Technology. The authors carefully protect proprietary technical data that was provided by various government and nongovernment partners involved in this effort. Key gun system details include the 155-mm ... |
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| Chemical Equilibrium Code with Compressibility for Ablation and Erosion Calculations |
OCT 2001 |
16 pages |
| Authors:
S. Dunn; D. Coats; S. Sopok; ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS
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| A version of the LeRC CET chemical equilibrium code, which includes B sub a value calculations for thermochemical erosion, was modified to include nonideal gas effects. The compressibility models that were added to the code were the BKW, Corner/Lennard-Jones Potential(LJP) and NBS models. Compressibility effects on species production for a variety of gun propellants were computed. These results were compared to the standard BLAKE code and were in agreement within ... |
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| Cannon Coating Erosion Modeling Achievements |
OCT 2001 |
26 pages |
| Authors:
S. Sopok; S. Dunn; P. O'Hara; D. Coats; G. Pflegl; C. Rickard; ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS
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| Our repeatedly verified erosion theories are derived from many years of conducting the Army's mission of characterizing a broad spectrum of fired and eroded cannons. Based on these characterizations, we chronicle the establishment, development, achievement, and advancement of the first practical cannon and cannon coating/ablative erosion models for large and medium caliber gun systems. The U.S. Army Research Laboratory's subsequent confirmation and adoption of our cannon and cannon coating/ablative erosion ... |
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| Rarefaction Wave Gun Propulsion |
APR 2001 |
23 pages |
| Authors:
E. Kathe; R. Dillon; S. Sopok; M. Witherell; S. Dunn; ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS
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| RArefaction waVE guN (RAVEN) propulsion constitutes a novel means to dramatically reduce the recoil momentum and heat imparted to future cannons during firing. The method may be considered a hybrid propulsion technology with features common to both closed-breech cannons and recoilless rifles. Reduction of recoil and gun heating would greatly facilitate large caliber gun integration within light future combat system (FCS) vehicles. Analysis of a RAVEN launcher comparable to the ... |
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| A Test Methodology for an Investigation into Heating and Cooling Phenomena in Grossly Deformed Tensile Metallic Bars |
DEC 87 |
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| Authors:
L. Molent; S. Dunn; AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)
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 | The coupling between mechanical deformation and thermal energy in an elastic material, known as the thermoelastic effect, was first documented by Gough in 1805, who observed that the material experienced a change in temperature during elongation. More recently, investigation of the phenomenon of energy exchange in metals has been extended into the plastic regime, where a material experiences heating after the elastic limit has been exceeded, i.e. the thermoplastic effect. ... |
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| Evaluation of a Class III Biological Safety Cabinet for Enclosure of an Ultracentrifuge, |
23 MAY 1979 |
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| Authors:
M. A. Chatigny; S. Dunn; K. Ishimaru; J. A. Eagleson; S. B. Prusiner; CALIFORNIA UNIV BERKELEY NAVAL BIOSCIENCES LAB
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| The Correlation Radar for Combat Surveillance. |
FEB 1974 |
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| Authors:
S. Dunn; P. Rademacher; D. Randise; W. Fishbein; O. Rittenbach; SPERRY GYROSCOPE CO GREAT NECK N Y RADIATION DIV
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| An exploratory research model of a lightweight, low power consuming, man-portable radar system was developed, capable of detecting, locating and presenting fixed and/or moving targets of interest in a battlefield environment. The CW radar transmission utilizes three modulations: a pseudo-random phase-reversal modulation to obtain range resolution by correlation of the received single with a replica of the transmitted code; a low deviation sinewave frequency modulation for effectively cancelling the inverse ... |
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