Accession Number:

AD0729125

Title:

Untersuchungen ueber die Erhoehung des Auftriebes von Tragluegeln mittels Grenzschichtbeeinflussung durch Ausblasen (Investigation of Boundary Layer Interference by Blowing Over Airfoils for Increasing Lift),

Descriptive Note:

Corporate Author:

DEUTSCHE FORSCHUNGSANSTALT FUER LUFT- UND RAUMFAHRT E V BRUNSWICK (WEST GERMANY) INSTITUT FUER AERODYNAMIK

Personal Author(s):

Report Date:

1961-07-18

Pagination or Media Count:

22.0

Abstract:

The report gives a survey on systematic measurements on a rectangular wing with a blown flap at the trailing edge. Along the whole span of the wing air was blown out through a narrow slot over the flap in order to prevent boundary layer separation at high angles of flap deflection. In this way the lift was considerably increased and pressure plotting measurements were carried out at a series of Reynolds numbers. Further measurements with an increased momentum coefficient included the region of supercirculation.--In order to find a theoretical estimation for the minimum momentum coefficient required for preventing the flow separation, the flow phenomena in the boundary layer downstream the blowing slot have been investigated by special experiments. Author

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE