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Advanced Spectroscopic and Thermal Imaging Instrumentation for Shock Tube and Ballistic Range FacilitiesThe Electric Arc Shock Tube (EAST) facility and Hypervelocity Free Flight Aerodynamic Facility (HFFAF, an aeroballistic range) at NASA Ames support basic research in aerothermodynamic phenomena of atmospheric entry, specifically shock layer radiation spectroscopy, convective and radiative heat transfer, and transition to turbulence. Innovative optical instrumentation has been developed and implemented to meet the challenges posed from obtaining such data in these impulse facilities. Spatially and spectrally resolved measurements of absolute radiance of a travelling shock wave in EAST are acquired using multiplexed, time-gated imaging spectrographs. Nearly complete spectral coverage from the vacuum ultraviolet to the near infrared is possible in a single experiment. Time-gated thermal imaging of ballistic range models in flight enables quantitative, global measurements of surface temperature. These images can be interpreted to determine convective heat transfer rates and reveal transition to turbulence due to isolated and distributed surface roughness at hypersonic velocities. The focus of this paper is a detailed description of the optical instrumentation currently in use in the EAST and HFFAF.
Document ID
Document Type
Conference Paper
Grinstead, Jay H.
(NASA Ames Research Center Moffett Field, CA, United States)
Wilder, Michael C.
(NASA Ames Research Center Moffett Field, CA, United States)
Reda, Daniel C.
(NASA Ames Research Center Moffett Field, CA, United States)
Cruden, Brett A.
(Eloret Corp. Moffett Field, CA, United States)
Bogdanoff, David W.
(Eloret Corp. Moffett Field, CA, United States)
Date Acquired
August 27, 2013
Publication Date
April 1, 2010
Publication Information
Publication: Aerothermodynamic Design, Review on Ground Testing and CFD
Subject Category
Instrumentation And Photography
Funding Number(s)
Distribution Limits
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