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Record Details

Record 39 of 1090
An overview of selected NASP aeroelastic studies at the NASA Langley Research Center
Author and Affiliation:
Spain, Charles V.(Lockheed Engineering and Sciences Co., Hampton, VA, United States)
Soistmann, David L.(Lockheed Engineering and Sciences Co., Hampton, VA, United States)
Parker, Ellen C.(Lockheed Engineering and Sciences Co., Hampton, VA, United States)
Gibbons, Michael D.(Lockheed Engineering and Sciences Co., Hampton, VA, United States)
Gilbert, Michael G.(NASA Langley Research Center, Hampton, VA, United States)
Abstract: Following an initial discussion of the NASP flight environment, the results of recent aeroelastic testing of NASP-type highly swept delta-wing models in Langley's Transonic Dynamics Tunnel (TDT) are summarized. Subsonic and transonic flutter characteristics of a variety of these models are described, and several analytical codes used to predict flutter of these models are evaluated. These codes generally provide good, but conservative predictions of subsonic and transonic flutter. Also, test results are presented on a nonlinear transonic phenomena known as aileron buzz which occurred in the wind tunnel on highly swept delta wings with full-span ailerons. An analytical procedure which assesses the effects of hypersonic heating on aeroelastic instabilities (aerothermoelasticity) is also described. This procedure accurately predicted flutter of a heated aluminum wing on which experimental data exists. Results are presented on the application of this method to calculate the flutter characteristics of a fine-element model of a generic NASP configuration. Finally, it is demonstrated analytically that active controls can be employed to improve the aeroelastic stability and ride quality of a generic NASP vehicle flying at hypersonic speeds.
Publication Date: Oct 01, 1990
Document ID:
19910029821
(Acquired Nov 28, 1995)
Accession Number: 91A14444
Subject Category: LAUNCH VEHICLES AND SPACE VEHICLES
Report/Patent Number: AIAA PAPER 90-5218
Document Type: Preprint
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Lockheed Engineering and Sciences Co.; Hampton, VA, United States
NASA Langley Research Center; Hampton, VA, United States
Description: 15p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AEROELASTICITY; DELTA WINGS; FLUTTER ANALYSIS; NATIONAL AEROSPACE PLANE PROGRAM; TRANSONIC WIND TUNNELS; FINITE ELEMENT METHOD; GENERAL OVERVIEWS; NASA SPACE PROGRAMS; WIND TUNNEL MODELS; WIND TUNNEL TESTS
Imprint And Other Notes: AIAA, International Aerospace Planes Conference, 2nd, Orlando, FL, Oct. 29-31, 1990. 15 p.
Availability Source: Other Sources
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