Accession Number : AD0778432

Title :   RHEA(Reentry Heating Energies Analyzer),

Descriptive Note : Interim rept. 1 Dec 71-30 Sep 73,


Personal Author(s) : Johnson,Elmer G. ; Von Ohain,Hans J. P.

Report Date : SEP 1973

Pagination or Media Count : 34

Abstract : At the present time, duplication of reentry environments in ground test facilities cannot be satisfactorily accomplished. Major deficiencies in such facilities are: too short test times, gases not representative of the atmosphere because of residual dissociation and ionization of air molecules, and stagnation pressure and enthalpy not representative of those produced through dynamics of the flight vehicle. Many new concepts and attempts to circumvent these limitations have been studied over the past few years. The RHEA process is a novel mechanic approach to solving the problem of duplicating high speed environments in ground testing facilities. This report reviews highlights of the concept and research results on key problems which have been under investigation by a number of research groups for the past year. (Modified author abstract)

Descriptors :   *Atmosphere entry, Space environments, Space simulation chambers, Two phase flow, Supersonic wind tunnels, High velocity, High temperature, Energy transfer

Subject Categories : Test Facilities, Equipment and Methods
      Guided Missile Traj, Accuracy and Ballistics
      Spacecraft Trajectories and Reentry

Distribution Statement : APPROVED FOR PUBLIC RELEASE