Accession Number : AD0760363

Title :   Investigation of the Effects of Mass Injection to Restructure a Trailing Tip Vortex at Transonic Speeds.

Descriptive Note : Final technical rept. 15 Feb 72-14 Feb 73,

Corporate Author : ROCHESTER APPLIED SCIENCE ASSOCIATES INC N Y

Personal Author(s) : Balcerak,John C. ; Zalay,Andrew D.

Report Date : FEB 1973

Pagination or Media Count : 86

Abstract : The report describes the results of an experimental research program which was conducted to assess the effects of mass injection of the tip vortex on airfoil performance in transonic flow. Balance data and Schlieren photographs were taken for a rectangular semispan model with a full-span aspect ratio of 7.35 in the Mach number range M =0.553 to 1.0. Schlieren photographs of the compressible flow field indicated that the near field flow characteristics of the airfoil were not influenced by mass injection or by passive nozzle characteristics at transonic speeds. (Modified author abstract)

Descriptors :   (*ROTOR BLADES(ROTARY WINGS), *TRANSONIC CHARACTERISTICS), FLOW VISUALIZATION, AVIATION SAFETY, FLOW FIELDS, COMPRESSIBLE FLOW, WAKE

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE