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PIV Measurements of the CEV Hot Abort Motor Plume for CFD ValidationNASA s next manned launch platform for missions to the moon and Mars are the Orion and Ares systems. Many critical aspects of the launch system performance are being verified using computational fluid dynamics (CFD) predictions. The Orion Launch Abort Vehicle (LAV) consists of a tower mounted tractor rocket tasked with carrying the Crew Module (CM) safely away from the launch vehicle in the event of a catastrophic failure during the vehicle s ascent. Some of the predictions involving the launch abort system flow fields produced conflicting results, which required further investigation through ground test experiments. Ground tests were performed to acquire data from a hot supersonic jet in cross-flow for the purpose of validating CFD turbulence modeling relevant to the Orion Launch Abort Vehicle (LAV). Both 2-component axial plane Particle Image Velocimetry (PIV) and 3-component cross-stream Stereo Particle Image Velocimetry (SPIV) measurements were obtained on a model of an Abort Motor (AM). Actual flight conditions could not be simulated on the ground, so the highest temperature and pressure conditions that could be safely used in the test facility (nozzle pressure ratio 28.5 and a nozzle temperature ratio of 3) were used for the validation tests. These conditions are significantly different from those of the flight vehicle, but were sufficiently high enough to begin addressing turbulence modeling issues that predicated the need for the validation tests.
Document ID
Document Type
Conference Paper
Wernet, Mark
(NASA Glenn Research Center Cleveland, OH, United States)
Wolter, John D.
(NASA Glenn Research Center Cleveland, OH, United States)
Locke, Randy
(ASRC Aerospace Corp. Cleveland, OH, United States)
Wroblewski, Adam
(ASRC Aerospace Corp. Cleveland, OH, United States)
Childs, Robert
(Eloret Corp. Moffett Field, CA, United States)
Nelson, Andrea
(Eloret Corp. Moffett Field, CA, United States)
Date Acquired
August 25, 2013
Publication Date
January 4, 2010
Subject Category
Launch Vehicles And Launch Operations
Report/Patent Number
AIAA Paper-2010-1031
Meeting Information
48th AIAA Aerospace Sciences Meeting(Orlando, FL)
Funding Number(s)
WBS: WBS 984754.
Distribution Limits
Public Use Permitted.
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