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Motion and Heating During Atmosphere Reentry of Space VehiclesThe results of an analysis of the motion and heating during atmospheric reentry of manned space vehicles has shown the following: 1. Flight-corridor depths which allow reentry in a single pass decrease rapidly as the reentry speed increases if the maximum deceleration is limited to 10 g. 2. Use of aerodynamic lift can result in a three-to five fold increase in corridor depth over that available to a ballistic vehicle for the same deceleration limits. 3. Use of aerodynamic lift to widen these reentry corridors causes a heating penalty which becomes severe for values of the lift-drag ratio greater than unity for constant lift-drag entry. 4. In the region of most intense convective heating the inviscid flow is generally in chemical equilibrium but the boundary-layer flows are out of equilibrium. Heating rates for the nonequilibrium boundary layer are generally lower than for the corresponding equilibrium case. 5. Radiative heating from the hot gas trapped between the shock wave and the body stagnation region may be as severe as the convective heating and unfortunately occurs at approximately the same time in the flight.
Document ID
19980231044
Acquisition Source
Headquarters
Document Type
Other - NASA Technical Note (TN)
Authors
Wong, Thomas J. (NASA Ames Research Center Moffett Field, CA United States)
Goodwin, Glen (NASA Ames Research Center Moffett Field, CA United States)
Slye, Robert E. (NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1960
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
NASA-TN-D-334
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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