Accession Number : AD0765320

Title :   Higher Harmonic Circulation Control Rotor Model - Model Instrumentation and Data Acquisition.

Descriptive Note : Technical note,

Corporate Author : NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD AVIATION AND SURFACE EFFECTS DEPT

Personal Author(s) : Stone,Michael B.

Report Date : APR 1973

Pagination or Media Count : 43

Abstract : A higher harmonic circulation control rotor was tested in the 8' x 10' subsonic wind tunnel at various advance ratios, blade tip Mach numbers, blowing air pressures, shaft angles and collective angles. The model was instrumented with strain gages, pressure transducers, thermocouples, magnetic pick-ups and a pitch-roll trim resolver. This information was recorded on an analog to digital acquisition system and on F.M. tape recorders for later digitization. The purpose of the report is to provide descriptive documentation of the model instrumentation and data acquisition portion of the test, and there is no attempt made to elaborate on helicopter or higher harmonic theory. (Author)

Descriptors :   (*ROTOR BLADES(ROTARY WINGS), FLUID DYNAMICS), (*HELICOPTER ROTORS, MODEL TESTS), WIND TUNNEL MODELS, INSTRUMENTATION, STRAIN GAGES, TRANSDUCERS, RESONANT FREQUENCY, DATA PROCESSING, COANDA EFFECT

Subject Categories : Aerodynamics
      Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE