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A historical perspective of the YF-12A thermal loads and structures programAround 1970, the Y-F-12A loads and structures efforts focused on numerous technological issues that needed defining with regard to aircraft that incorporate hot structures in the design. Laboratory structural heating test technology with infrared systems was largely created during this program. The program demonstrated the ability to duplicate the complex flight temperatures of an advanced supersonic airplane in a ground-based laboratory. The ability to heat and load an advanced operational aircraft in a laboratory at high temperatures and return it to flight status without adverse effects was demonstrated. The technology associated with measuring loads with strain gages on a hot structure was demonstrated with a thermal calibration concept. The results demonstrated that the thermal stresses were significant although the airplane was designed to reduce thermal stresses. Considerable modeling detail was required to predict the heat transfer and the corresponding structural characteristics. The overall YF-12A research effort was particularly productive, and a great deal of flight, laboratory, test and computational data were produced and cross-correlated.
Document ID
19960027893
Acquisition Source
Armstrong Flight Research Center
Document Type
Technical Memorandum (TM)
Authors
Jenkins, Jerald M. (NASA Dryden Flight Research Center Edwards,CA United States)
Quinn, Robert D. (NASA Dryden Flight Research Center Edwards,CA United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1996
Subject Category
Aeronautics (General)
Report/Patent Number
NAS 1.15:104317
H-2079
NASA-TM-104317
Report Number: NAS 1.15:104317
Report Number: H-2079
Report Number: NASA-TM-104317
Accession Number
96N29035
Funding Number(s)
PROJECT: RTOP 505-70-63
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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