File:X-30 NASP 4.jpg

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File:X-30 NASP 4.jpg - Wikipedia

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Summary

DescriptionX-30 NASP 4.jpg	English: The proposed National Aerospace Plane (NASP) consists of a long, flexible, lifting-body fuselage and relatively small, highly swept, all-movable, clipped-delta wings. The fuselage flexibility and the all-movable feature of the clipped-delta wings may make the vehicle susceptible to aeroelastic instabilities throughout the flight envelope. A wind-tunnel test of a NASP model was conducted to meet three objectives: to measure the flutter mechanism inherent to this type of vehicle; to examine the effect of parametric variations on the flutter behavior of the model; and to correlate the experimental data with analysis. A tenth-scale representation of an unclassified version of the NASP vehicle was flutter tested in the Transonic Dynamics Tunnel (TDT). This representation was a full-span model with pitch and plunge degrees of freedom simulated with springs in the floor mount. The model had all-movable, clipped-delta wings and cantilevered, clipped-delta vertical fins. The stiffness of the wing actuators was simulated with springs. A photo of the model mounted in the wind tunnel is shown in the figure. A flutter analysis of the model was performed using calculated linear, lifting-surface aerodynamics. The wind-tunnel test of this model showed the NASP-type vehicles employing single-pivot, all-movable wings are susceptible to body-freedom flutter. The test results show that increasing the wing-actuator-pitch stiffness can make the body-freedom flutter instability less critical. The correlation of flutter analysis to the experimental data indicates that the mathematical tools used in this study were sufficient to predict the body-freedom flutter encountered in the wind tunnel.
Date	30 November 1992
Source	http://nix.nasa.gov/info?id=EL-1996-00226 (direct link)
Author	NASA

This image or video was catalogued by Langley Research Center of the United States National Aeronautics and Space Administration (NASA) under Photo ID: EL-1996-00226 and Alternate ID: L92-12800.

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	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	21:07, 11 April 2010		2,189 × 2,658 (994 KB)	Jatkins	Full resolution and crop footer
	04:46, 3 July 2006		843 × 1,068 (102 KB)	Dabarkey~commonswiki	http://lisar.larc.nasa.gov/IMAGES/MEDIUM/EL-1996-00226.jpeg X-30 NASP model in the NASA-Langley Transonic Dynamics Tunnel

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Rockwell X-30

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