Accession Number:

AD0726736

Title:

An Experimental Study of Tip Vortex Modification by Mass Flow Injection

Descriptive Note:

Final technical rept. 1 Feb 1969-31 Jan 1971

Corporate Author:

ROCHESTER APPLIED SCIENCE ASSOCIATES NY

Report Date:

1971-01-01

Pagination or Media Count:

85.0

Abstract:

An experimental program was conducted to investigate the modifications of a tip vortex which could be obtained by injecting the core of a tip vortex with a stream of air. Wind tunnel tests of an airfoil model were conducted. The results obtained from flow-visualization studies, balance data, and vortex-meter measurements show how the strength of the tip vortex can be reduced significantly by the injection of a linear mass flow of air into the core of the tip vortex. The reduction in drag obtained with injection is important since it allows the recovery of power required to inject the tip vortex core with mass flow.

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE