Flight test experiments were conducted to measure the extent and nature of natural laminar flow on a smoothed test region of a swept-wing business jet wing. Surface hot film aneraometry and sublimating chemicals were used for transition detection.Surface pressure distributions were measured using pressure belts. Engine noise was monitored by a microphone attached to the wing surface to study possible acoustic effects on stability of the laminar boundary layer, Side-slip conditions were flown to simulate changes in effective wing sweep. Flight instrumentation and ground data analysis techniques and a method for measuring intermittency of turbulence are described, Correlation was obtained between the hot film gage signals and chemicals for transition detection. Cross-flow vortices were observed for some flight conditions. Results of spectral and statistical analysis of the hot film signals for various flight test conditions are presented.
Further Results of Natural Laminar Flow Flight Test Experiments
Sae Technical Papers
General Aviation Aircraft Meeting and Exposition ; 1985
1985-04-01
Aufsatz (Konferenz)
Englisch
Statistical analysis , Chemicals , Flight tests , Pressure , Turbulence , Acoustics , Noise , Wings
757 NLF (Natural Laminar Flow) Glove Flight Test Results
NTIS | 1987
|Laminar-Flow Flight Experiments
NTIS | 1989
|Laminar-flow flight experiments
NTRS | 1989
|F-111 TACT natural laminar flow glove flight results
NTRS | 1981
|Laminar flow flight experiments - A review
NTRS | 1992
|