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B-1 AFT Nacelle Flow Visualization StudyA 2-month program was conducted to perform engineering evaluation and design tasks to prepare for visualization and photography of the airflow along the aft portion of the B-1 nacelles and nozzles during flight test. Several methods of visualizing the flow were investigated and compared with respect to cost, impact of the device on the flow patterns, suitability for use in the flight environment, and operability throughout the flight. Data were based on a literature search and discussions with the test personnel. Tufts were selected as the flow visualization device in preference to several other devices studied. A tuft installation pattern has been prepared for the right-hand aft nacelle area of B-1 air vehicle No.2. Flight research programs to develop flow visualization devices other than tufts for use in future testing are recommended. A design study was conducted to select a suitable motion picture camera, to select the camera location, and to prepare engineering drawings sufficient to permit installation of the camera. Ten locations on the air vehicle were evaluated before the selection of the location in the horizontal stabilizer actuator fairing. The considerations included cost, camera angle, available volume, environmental control, flutter impact, and interference with antennas or other instrumentation.
Document ID
19990110574
Acquisition Source
Armstrong Flight Research Center
Document Type
Contractor Report (CR)
Authors
Celniker, Robert (Rockwell International Corp. Los Angeles, CA United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1975
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NA-74-626
NAS 1.26:127493
NASA/CR-1999-127493
Funding Number(s)
CONTRACT_GRANT: NAS4-2182
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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