Accession Number : AD0708798

Title :   AN OPTIMIZATION OF STUDY OF THE UTIAS IMPLOSION-DRIVEN 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 Implosion-Driven, 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 finite-difference 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, projectile-barrel 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