Accession Number : AD0702802

Title :   THE EQUILIBRIUM SHAPE OF AN ABLATING NOSE IN LAMINAR HYPERSONIC FLOW.

Descriptive Note : Rept. for Feb-Sep 69,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Hains,Franklin D.

Report Date : 31 DEC 1969

Pagination or Media Count : 15

Abstract : A simple theory has been developed to give the equilibrium nose shape of an ablating body in laminar hypersonic flow. The problem of a lack of body scale, encountered by Simpkins, was overcome in the present theory by using the more accurate heat transfer relation given by Lees. The pressure distribution over the body was assumed to be Newtonian. Comparisons are made between experimental shapes obtained in the Aerospace Corporation arc tunnel and those given by Simpkins. Good agreement is shown except near the shoulder of the body, where the accuracy of the Newtonian formula decreases. The theory shows that the equilibrium shape is more blunt than a hemisphere. (Author)

Descriptors :   (*REENTRY VEHICLES, ABLATION), ATMOSPHERE ENTRY, LAMINAR BOUNDARY LAYER, HYPERSONIC FLOW, EROSIVE BURNING, HEAT TRANSFER, BLUNT BODIES, THEORY

Subject Categories : Guided Missile Traj, Accuracy and Ballistics
      Guided Missile Reentry Vehicles

Distribution Statement : APPROVED FOR PUBLIC RELEASE