Accession Number : ADA293309

Title :   A Novel Instrumentation System for Measurement of Helicopter Rotor Motions and Loads Data. Phase 1.

Descriptive Note : Final rept. 10 Aug 94-10 Mar 95,

Corporate Author : CONTINUUM DYNAMICS INC PRINCETON NJ

Personal Author(s) : McKillip, Robert, Jr

PDF Url : ADA293309

Report Date : APR 1995

Pagination or Media Count : 61

Abstract : Results of a Phase-I SBIR study directed at a novel instrumentation system for the measurement of helicopter rotor motion and loads are described. Background into the requirements and needs of the measurement system are provided, along with a summary of past activities in this area. Consideration is then given to a novel scheme that incorporates blade-mounted accelerometer sensors with a simplified signal processing scheme to extract both rotor motion measurements, and to a limited extent, blade loading information. Issues regarding sensitivity of the system to modeling errors, nonlinearities and sensor bias errors are examined through detailed simulation and analysis. Also, a demonstration of the system performance for reconstructing flapping motion measurements is provided using Froude-scaled model rotor test results. Finally, implementation issues are discussed, and a plan for continued work leading to prototype development for this system is outlined.

Descriptors :   *MOTION, *HELICOPTER ROTORS, *FLIGHT LOADS, SIGNAL PROCESSING, SIMULATION, MEASUREMENT, DETECTORS, MODELS, PROTOTYPES, BLADES, ERRORS, INSTRUMENTATION, ROTORS, BIAS, SIMPLIFICATION.

Subject Categories : Helicopters
      Mechanics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE