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A Computational/Experimental Study of Two Optimized Supersonic Transport Designs and the Reference H BaselineTwo supersonic transport configurations designed by use of non-linear aerodynamic optimization methods are compared with a linearly designed baseline configuration. One optimized configuration, designated Ames 7-04, was designed at NASA Ames Research Center using an Euler flow solver, and the other, designated Boeing W27, was designed at Boeing using a full-potential method. The two optimized configurations and the baseline were tested in the NASA Langley Unitary Plan Supersonic Wind Tunnel to evaluate the non-linear design optimization methodologies. In addition, the experimental results are compared with computational predictions for each of the three configurations from the Enter flow solver, AIRPLANE. The computational and experimental results both indicate moderate to substantial performance gains for the optimized configurations over the baseline configuration. The computed performance changes with and without diverters and nacelles were in excellent agreement with experiment for all three models. Comparisons of the computational and experimental cruise drag increments for the optimized configurations relative to the baseline show excellent agreement for the model designed by the Euler method, but poorer comparisons were found for the configuration designed by the full-potential code.
Document ID
20000044866
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Cliff, Susan E.
(NASA Ames Research Center Moffett Field, CA United States)
Baker, Timothy J.
(Princeton Univ. NJ United States)
Hicks, Raymond M.
(NASA Ames Research Center Moffett Field, CA United States)
Reuther, James J.
(NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
August 19, 2013
Publication Date
December 1, 1999
Publication Information
Publication: First NASA/Industry High-Speed Research Configuration Aerodynamics Workshop
Issue: Part 3
Subject Category
Aircraft Design, Testing And Performance
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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