
Accession Number : AD0708798
Title : AN OPTIMIZATION OF STUDY OF THE UTIAS IMPLOSIONDRIVEN HYPERVELOCITY LAUNCHER MK II.
Descriptive Note : Technical note,
Corporate Author : TORONTO UNIV (ONTARIO) INST FOR AEROSPACE STUDIES
Personal Author(s) : Flagg,Robert F. ; Mitchell,Gregory P.
Report Date : APR 1970
Pagination or Media Count : 87
Abstract : A detailed study is presented of the optimization of the projectile velocity of the proposed UTIAS MK II ImplosionDriven, Hypervelocity Launcher. The projectile velocity was optimized with respect to four variables, namely explosive weight, initial loading pressure, hemispherical cavity size, and peak projectile acceleration or base pressure. The details of the dynamics of the waves which occur in the chamber and the dynamics of the projectile in the barrel were determined using a finitedifference computer program coded for use with the IBM 1130 computing machine. The code, which uses the von Neumann artificial viscosity technique to solve a set of nonlinear partial differential equations that describe the motion of the gas and projectile, did not contain such effects as radiative or convective heat losses, projectilebarrel friction, or ablation. The calculations therefore represent an ideal performance and set an upper bound on what can be expected in practice. (Author)
Descriptors : (*HYPERVELOCITY GUNS, OPTIMIZATION), INTERIOR BALLISTICS, CONVECTION(HEAT TRANSFER), ABLATION, THERMAL RADIATION, LIGHT GAS GUNS, PREDICTIONS, DETONATION WAVES, NUMERICAL ANALYSIS, TEST METHODS
Subject Categories : Test Facilities, Equipment and Methods
Ballistics
Distribution Statement : APPROVED FOR PUBLIC RELEASE