Abstract Recoilless launch system is economical and convenient. This paper provided a recoilless with high chamber pressure based on the theory of gun. A program for interior ballistics simulation mixed propellent was designed. The curves projectile velocity time travels were by program. And phenomena different combustion stages presented curve are discussed. results reached set indicators, it ...

This paper reports on the performance of forensic document examiners (FDEs) in a signature comparison task that was designed to address the issue of expertise. The opinions of FDEs regarding 150 genuine and simulated questioned signatures were compared with a control group of non-examiners' opinions. On the question of expertise, results showed that FDEs were statistically better than the contr...

Standard bullets and casings are currently under development to support the National Integrated Ballistics Information Network (NIBIN) in the U.S. Based on a numerically controlled diamond turning technique, 20 RM 8240 standard bullets were fabricated in 2002. Test results show high repeatability and reproducibility for the bullet signatures on these RM bullets. Prototype standard casings were ...