The Experimental Study of Transition and Leading Edge Contamination on Swept Wings (Etude De La Transition Et De La Contamination De Bord D'Attaque Sur Alles En Fleche)
DEFENCE RESEARCH AGENCY FARNBOROUGH (UNITED KINGDOM) AEROSPACE DIV
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This study is concerned with an experimental investigation of the different ways in which turbulence appears in an incompressible laminar boundary layer on a swept wing. Transition is detected by the use of hot films attached to the model. The results of two series of measurements are given in the first, the sensors are placed along the chord and the recorded signals allow the analysis of problems in streamwise and crossflow instability, and leading edge contamination. In the second series of experiments, hot films are distributed along the span, close to the leading edge. Leading edge contamination is studied in detail and possibilities of relaminarisation are considered.
- Fluid Mechanics