PRELIMINARY ANALYSIS OF THE CAPABILITIES OF A COMPOSITE SLAB FOR AN ADVANCED HEAT-SINK DESIGN

Technical Report · Mon Jun 13 04:00:00 EDT 1960

OSTI ID:4065835

Libby, P A

The results of a numerical analysis of the capability of a composite slab of BeO and Be to absorb the heating associated with the re-entry of a high performance ballistic missile are presented. The trajectory considered corresponds to a ballistic factor (W/CDA) equal to 2000 psf, to a reentry velocity of 20,000 fps, and to a re-entry angle of 20 deg . The numerical results indicated that the maximum permissible heat tranafer rates for the trajectory are obtained with a relatively thin slab of beryllium oxide. The addition of beryllium to this slab may be required for structural and thermal shock considerations but does not greatly improve the heat-sink capabilities. The permissible values of the heat transfer parameter were applied to a slender cone with a 20 deg half angle and with a spherical cap of 0.25 ft nose radius. It is shown that for laminar flow no heat transfer reduction is required on the cone while for turbulent flow a reduction to 1/2 is required. Various means for achieving heat reduction are discussed. (auth)

• Research Organization: Brooklyn. Polytechnic Inst.
• NSA Number: NSA-15-014393
• OSTI ID: 4065835
• Report Number(s): WADD-TN-59-424(Pt.II)
• Country of Publication: United States
• Language: English

Related Subjects

BERYLLIUM
BERYLLIUM OXIDES
COATING
CONFIGURATION
ENGINEERING AND EQUIPMENT
GAS FLOW
HEAT TRANSFER
PERFORMANCE
ROCKETS
SAFETY
SHOCK WAVES
STANDARDS
TEMPERATURE
THERMAL RADIATION
THICKNESS
TURBULENCE
VELOCITY