Accession Number:

AD0609278

Title:

TEMPERATURES AND ABLATION RATES IN AN ABLATING HEAT SHIELD EXPOSED TO A TRIANGULAR HEAT INPUT,

Descriptive Note:

Corporate Author:

AVCO CORP WILMINGTON MASS RESEARCH AND ADVANCED DEVELOPMENT DIV

Personal Author(s):

Report Date:

1959-12-04

Pagination or Media Count:

47.0

Abstract:

A powerful and new approximate analytical technique for solving non-linear heat conduction problems employs the heat balance integral. This technique is applied herein to solve the ablation problem when a heat shield material is exposed to a triangular heat flux. The ablated material is considered to be mechanically removed immediately upon melting. Since the heating curve approximates re-entry conditions, the results of this investigation may be used to obtain insight into the actual thermal conditions in the heat shield during re-entry. The important dimensionless parameters are listed and curves are given to demonstrate the influence of each. Another use of this analysis is to provide an approximate check of digital solutions as well as an approximate method of designing re-entry shields for given heating conditions. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE