Accession Number:

AD0702078

Title:

INVESTIGATION OF LAMINAR BOUNDARY-LAYER SEPARATION ON A FLAT-PLATE-RAMP COMBINATION WITH AND WITHOUT MASS REMOVAL AT MACH NUMBERS 6, 8, AND 10

Descriptive Note:

Final rept. 11 Jul 1965-18 Apr 1969

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

Report Date:

1970-03-01

Pagination or Media Count:

65.0

Abstract:

An experimental investigation of laminar boundary-layer separation induced by a trailing edge ramp on a flat plate was conducted at Mach numbers of 6, 8, and 10. The tests were conducted over a range of Reynolds numbers. Longitudinal and spanwise surface pressure distributions, pitot pressure profiles, and shadowgraph pictures were used to investigate the two- dimensionality of the flow and the effects of model geometry, angle of attack, Reynolds number, ramp angle, and mass removal from the separation region. Data are presented to show that laminar, two-dimensional boundary-layer reattachment, not limited by model geometry, was obtained. These data are compared to the integral-moment theory of Lees and Reeves as modified by Klineberg. It is also shown that a separation region can be reduced or even eliminated by removing mass at the hinge line.

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE