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X-43



>These deltas were
>then applied to drag/lift/pitch moment data obtained in scaled aerodynamic
>wind tunnel tests of the full vehicle configuration. These values were
>compared with those generated using an analysis methodology which included
>3-D CFD and 2/1-D engine cycle codes. This comparison is shown on p. 19 of
>the presentation package for  Hyper-X Flight Engine Ground Testing for X-43
>Flight Risk Reduction, L. D. Huebner, K. E. Rock, E. G. Ruf , D. W. Witte,
>and E. H. Andrews, Jr. AIAA/NAL-NASDA-ISAS 10  th  International Space
>Planes and Hypersonic Systems and Technologies Conference, Kyoto, Japan,
>AIAA 2001-1809,
>http://hapb-www.larc.nasa.gov/Public/Documents/KyotoVGall.pdf

Thought I hate replying to my own posts, I omitted one additional very
important point. While one may say the ground tests in of themselves were
the ultimate verification of the Mach 7 design, of equal importance was the
verification of the predictive methodology using 3-D CFD and 2/1-D cycle
analysis, as this type of final validation test not possible for the Mach
10 Hyper-X vehicle/engine design. Such are the limitations in the current
state of the art in both propulsion and propulsion-airframe integration
ground tests at this point in time.




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