Accession Number:

AD0260428

Title:

INVESTIGATION OF HIGH-SPEED PARTICLE EROSION OF MELTING AERODYNAMIC SURFACES

Descriptive Note:

Research rept.

Corporate Author:

BATTELLE MEMORIAL INST COLUMBUS OH

Personal Author(s):

Report Date:

1959-09-15

Pagination or Media Count:

112.0

Abstract:

The impact of atmospheric moisture particles on ablating hypersonic bodies was studied experimentally and theoretically. Various factors involved in the simulation of impacts with atmospheric-moisture particles during re-entry are discussed. The phenomena was studied experimentally in a rocket exhaust jet using small solid and liquid particles to simulate atmospheric moisture. Factors which could not be simulated in the rocket-exhaust-jet tests were analyzed theoretically. The experimental data were correlated using a mechanism based on the dissipation of particle energy in the melt layer. The results were extrapolated to the conditions of atmospheric re-entry. The results indicate that the ablation rate on a nose cone following a 3000 NM trajectory increases by a factor of 2 during flight through a cloud as a result of impacts with fine ice particles or water droplets.

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE