THREE-COMPONENT-MEASUREMENTS ON DELTA WINGS WITH CAVITATION

Abstract

Three-component-measurements on delta wings with different apex angles (15, 30, 45, 60 degrees) and at different cavitation numbers were undertaken. These measurements showed that the lift coefficient cL as a function of the angle of incidence is in agreement with the theory of K. Gersten (Tragflugeltheorie bei Unterschallgeschwindigkeit. WGL-Jahrbuch 1958 S.25), if there is no cavitation. The cavitation reduces the lift with increasing size of the pocket. For small angles of incidence the cL(alpha)-curves asymptotically approach the limiting curve for lift of cavitation-free flow. This could be qualitatively explained by means of photographs of the flow. These photographs also show that two separate pockets develop on the suction side of a delta wing, and these remain separated even for the smallest cavitation numbers. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1962
Accession Number
AD0284853

Entities

People

  • H. Reichardt
  • W. Sattler

Tags

DTIC Thesaurus Topics

  • Agreements
  • Angle Of Incidence
  • Cavitation
  • Coefficients
  • Delta Wings
  • Measurement
  • Photographic Materials
  • Photographs
  • Photography

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Combustion Dynamics and Shock Wave Physics.
  • Fluid Mechanics and Fluid Dynamics.