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Effect of the chemical state of pyrolysis gases on heat-shield mass / by William D. Brewer, C. W. Stroud, and Ronald K. Clark.
- Format:
- Book
- Government document
- Author/Creator:
- Brewer, William D., author.
- Stroud, C. W., author.
- Clark, Ronald K., author.
- Series:
- NASA technical note ; D-4975.
- NASA/TN ; D-4975
- Language:
- English
- Subjects (All):
- Pyrolysis.
- Ablative materials.
- pyrolysis.
- Physical Description:
- 1 online resource (25 pages) : illustrations.
- Place of Publication:
- Washington, D.C. : National Aeronautics and Space Administration, December 1968.
- Summary:
- Results are presented from an analytical investigation to determine the effect of the chemical state of the pyrolysis gases on the heat-shield mass required for a reentry vehicle in a given environment. Mass per unit area of ablative material required is calculated for a number of constant-heating-rate environments and the total mass is calculated for a lifting-body vehicle in a typical reentry trajectory. The required mass of ablative material is calculated for three different assumptions: (1) The pyrolysis gases are in chemical equilibrium at all times, (2) the gases are chemically frozen at 500 deg K, and (3) the gases change from the frozen state to equilibrium over some temperature range. p3.
- Notes:
- "December 1968."
- Includes bibliographical references (page 13).
- Description based on online resource, PDF version; title from title page (NASA, viewed on May 5, 2021).
- OCLC:
- 227854189
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