Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

The Effects of Active Cooling on the Aerodynamic and Aerothermodynamic Characteristics of Slender Bodies of Revolution

Report Number: AFFDL TR 64-187
Author(s): B. M. Leadon; Jan. Rosciszeski; W. H. Gallaher; W. R. Holst; W. V. Carter
Corporate Author: General Dynamics/Convair
Laboratory: AF Flight Dynamics Laboratory
Date of Publication: 1964-12
Pages: 106
Contract: AF 33(657)-11679
Project: 1366
Task: 136607
AD Number: AD0615471

Abstract:
A new self consistent method has been developed for calculation of boundary layer with mass injection. The system of partial differential equations is reduced to a system of ordinary differential equations by integration over different strips. The velocity and enthalpy profiles are assumed to be expressed by series of error functions. A method of calculating the initial velocity and enthalpy profiles, based on an analysis of singularity, is presented herein. The calculation of the initial profiles is reduced to the solution of a system of transcendential equations. The initial derivatives are calculated from linearlized equations near the singular points and provide a smooth start of integration of the downstream equations. The present method was applied to the cases of a sharp edged body and a blunt body. In addition to the velocity and enthalpy profiles, the pressure distribution and shock layer thickness can be calculated from generalized Newtonian expressions developed as a part of this effort.

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