Accession Number : ADA330053

Title :   Thermal Analysis of a Subminiature Telemetry Sensor Mounted in a Kinetic Energy Projectile Base

Descriptive Note : Final rept.

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Hollis, M. S. L. ; Guidos, B. J. ; Conroy, P. J.

PDF Url : ADA330053

Report Date : AUG 1997

Pagination or Media Count : 39

Abstract : A computational thermal analysis is presented for a hardened subminiature telemetry sensor system (HSTSS) mounted in the tracer well of a large caliber fin stabilized kinetic energy projectile. The HSTSS discussed here is designed to provide a record of roll history. The in-bore and in-flight projectile surface heat transfer conditions are adapted from two previous studies in numerical interior ballistic and computational aerodynamics. The combined heat transfer model is used in the present study to provide boundary conditions for computations of surface and in-depth transient thermal response of the HSTSS components. A two-dimensional axisymmetric multiple material numerical approach is used to model the HSTSS and projectile base over the complete in-bore and in-flight event. A one-dimensional numerical approach with a surface melt condition is used to model the protective plastic radome on the HSTSS while in bore. A one-dimensional analytical approach for high speed melting is presented and compared to the numerical model. The analysis allows a pre-test evaluation to be made of the thermal integrity of the HSTSS design for a large caliber launch and flight environment.

Descriptors :   *THERMAL ANALYSIS, *KINETIC ENERGY PROJECTILES, *AEROBALLISTICS, *TELEMETERING TRANSMITTERS, AERODYNAMIC STABILITY, PROJECTILES, SUBMINIATURE ELECTRONIC EQUIPMENT, SUPERSONIC FLOW, RADOMES, CONDUCTION(HEAT TRANSFER), AERODYNAMIC HEATING, GUN LAUNCHED, FIN STABILIZED AMMUNITION.

Subject Categories : Ammunition and Explosives
      Ballistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE