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Thermal design of AOTV heatshields for a conical drag brakeResults are presented from an on-going study of the thermal performance of thermal protection systems for a conical drag brake type AOTV. Three types of heatshield are considered: rigid ceramic insulation, flexible ceramic blankets, and ceramic cloths. The results for the rigid insulation apply to other types of AOTV as well. Charts are presented in parametric form so that they may be applied to a variety of missions and vehicle configurations. The parameters considered include: braking maneuver heat flux and total heat load, heatshield material and thickness, heatshield thermal mass and conductivity, absorptivity and emissivity of surfaces, thermal mass of support structure, and radiation transmission through thin heatshields. Results of temperature calculations presented show trends with and sensitivities to these parameters. The emphasis is on providing information that will be useful in estimating the minimum required mass of these heatshield materials.
Document ID
19850056298
Document Type
Conference Paper
Authors
Pitts, W. C. (NASA Ames Research Center Moffett Field, CA, United States)
Murbach, M. S. (Informatics General Corp. Palo Alto, CA, United States)
Date Acquired
August 12, 2013
Publication Date
June 1, 1985
Subject Category
LAUNCH VEHICLES AND SPACE VEHICLES
Report/Patent Number
AIAA PAPER 85-1052
Distribution Limits
Public
Copyright
Other