Accession Number : AD0837113

Title :   A SYSTEM FOR MEASURING DYNAMIC FLOW PROPERTIES IN AIRFOIL BOUNDARY LAYERS,

Corporate Author : ARMY AERONAUTICAL RESEARCH LAB MOFFETT FIELD CA

Personal Author(s) : Durbin, Enoch

Report Date : 1968

Pagination or Media Count : 15

Abstract : The paper is concerned with analysis of a method for ascertaining flow direction and magnitude in the rotor boundary-layer region as an indication of shear stress by the use of direction sensitive electrically heated surface film sensors which are powered in a feedback double bridge constant temperature system. The report concerns itself with a discussion of the basic idea of this system together with a theoretical analysis of the errors associated with such a system. (Author)

Descriptors :   (*HELICOPTER ROTORS, AERODYNAMIC CHARACTERISTICS), BOUNDARY LAYER, FLOW FIELDS, AIRFOILS, SHEAR STRESSES, DETECTORS, FEEDBACK, CONVECTION(HEAT TRANSFER), HEAT OF COMBUSTION, THERMAL CONDUCTIVITY, VOLTAGE, EQUATIONS, ERRORS.

Subject Categories : Helicopters
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE