Accession Number:

ADA229914

Title:

Unsteady Pressure Loads from Plunging Airfoils

Descriptive Note:

Corporate Author:

FRANK J SEILER RESEARCH LAB UNITED STATES AIR FORCE ACADEMY CO

Report Date:

1989-11-07

Pagination or Media Count:

9.0

Abstract:

Forced unsteady flow separation from a dynamically plunging airfoil was investigated using surface mounted pressure transducers. The transient pressure distributions and integrated lift and drag coefficients were plotted for parametric alterations in mean angle of attack reduced amplitude and reduced frequency. The unsteady loads produced were strongly dependent upon the dynamic stall event. Dynamic similarity for dimensional scaling of plunging motions was shown to be a function of both reduced frequency and amplitude.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE