Jurgen Thoenes

Principal Investigator

Jurgen Thoenes

Contract Number

Contract Da-01-021-AMC-12039 (Z)

Contract Name

Contract DA-01-021-AMC-12039 (Z)


U.S. Army Missile Command

Date of Report


Date of Project


School/Organization Name

University of Alabama Research Institute

Subject Area

Dissociating Air

Document Type



This report discusses two methods for the calculation of hypersonic flow of dissociating air past a circular cone. One objective of the investigation was to apply a Taylor-Maccoll type analysis in order to calculate chemical equilibrium flow past a circular cone and to compare the results with those previously obtained from Dorodnitsyn's integral method. The other objective was to investigate improvements to the one-strip integral method by developing and using a two-strip analysis for the calculation of chemical nonequil ibrium cone flow. It was found that, for equilibrium flow, the results from the Taylor-Maccoll type analysis are in excellent agreement with those from the one-strip integral method. For nonequil ibrium flow, it is shown that with increasing distance away from the tip the two-strip solution is closer to the equilibrium flow solution than the standard one-strip solution is. It is interesting to notice that, except for the distribution of the shock wave angle and the cone surface velocity, at a sufficient distance from the tip, the one-strip semi-exact solution approaches the equilibrium flow solution still closer than the two-strip solution does.

Publication Date



Final Technical Report

Citizenship Confirmation


Sensitive Material Confirmation




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