title: Mach one impact test apparatus utilizing an 18.4-mm-bore gas gun with a novel decelerating device.
abstract: The design and operation of a helium-gas-driven gun capable of operation to Mach one is described in this report. The gun utilizes a unique tapered-tube decelerator that captures the sabot and prevents gas discharge from the muzzle. This feature makes it possible to operate the gun in a normal laboratory environment without excessive safety precautions.
authors.affiliation: General Electric Company, Valley Forge, Pennsylvania 19101, USA.
authors.forename: A P
authors.initials: AP
authors.lastname: Coppa
authors.forename: G F
authors.initials: GF
authors.lastname: Selden
authors.forename: R L
authors.initials: RL
authors.lastname: Mehan