The problems of, and a particular solution for, the simulation of free-flight supersonic boundary-layer transition in ground facilities are discussed. Fundamental problems addressed include: technology requirements for blow-down low-disturbance wind-tunnels from upstream piping through to the diffuser with emphasis upon maintenance of laminar nozzle wall flows, characteristics and operational aspects of the NASA-LaRC Pilot Supersonic Quiet Tunnel, and comparisons of high-speed quiet facility transition studies with results from free flight, stability theory, and conventional ground facilities. Maintenance of laminar nozzle wall flow is shown to be a necessary condition for accurate simulation of high-speed flight transition behavior is ground facilities.
Wind-tunnel simulation of high-speed flight transition
Simulieren des Grenzschichtumschlags bei hohen Geschwindigkeiten im Windkanal
1989
14 Seiten, 7 Bilder, 29 Quellen
Aufsatz (Konferenz)
Englisch