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analysis of in-flight boundary-layer state measurements on a subsonic transport wing in high-lift configurationFlight experiments on NASA Langley's B737-100 (TSRV) airplane have been conducted to document flow characteristics in order to further the understanding of high-lift flow physics, and to correlate and validate computational predictions and wind-tunnel measurements. The project is a cooperative effort involving NASA, industry, and universities. In addition to focusing on in-flight measurements, the project includes extensive application of various computational techniques, and correlation of flight data with computational results and wind-tunnel measurements. Results obtained in the most recent phase of flight experiments are analyzed and presented in this paper. In-flight measurements include surface pressure distributions, measured using flush pressure taps and pressure belts on the slats, main element, and flap elements; surface shear stresses, measured using Preston tubes; off-surface velocity distributions, measured using shear-layer rakes; aeroelastic deformations of the flap elements, measured using an optical positioning system; and boundary-layer transition phenomena, measured using hot-film anemometers and an infrared imaging system. The analysis in this paper primarily focuses on changes in the boundary-layer state that occurred on the slats, main element, and fore flap as a result of changes in flap setting and/or flight condition. Following a detailed description of the experiment, the boundary-layer state phenomenon will be discussed based on data measured during these recent flight experiments.
Document ID
Document Type
Conference Paper
vanDam, C. P.
(California Univ. Davis, CA United States)
Los, S. M.
(California Univ. Davis, CA United States)
Miley, S. J.
(Old Dominion Univ. Norfolk, VA United States)
Yip, L. P.
(NASA Langley Research Center Hampton, VA United States)
Banks, D. W.
(NASA Langley Research Center Hampton, VA United States)
Roback, V. E.
(NASA Langley Research Center Hampton, VA United States)
Bertelrud, A.
(Analytical Services and Materials, Inc. Hampton, VA United States)
Date Acquired
August 17, 2013
Publication Date
September 21, 1995
Subject Category
Report/Patent Number
AIAA Paper 95-3911
NAS 1.26:200146
Meeting Information
1st AIAA Aircraft Engineering, Technology, and Operations Congress(Los Angeles, CA)
Funding Number(s)
Distribution Limits
Public Use Permitted.
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