Evaluation of an Advanced Instrumentation System for Helicopter Rotors

Abstract

A test was conducted on the Bell Helicopter High Accuracy Rotor Test Stand to evaluate a time division multiplexing system for a rotor environment. The test model was a standard UH-1 tail rotor with a 0.1-inch-thick glove wrapped around the surface for the installation of transducers. The objective of this program was to develop and test a method of obtaining numerous channels of transducer information from a rotating system using a small number of slip rings. The system multiplexed the signal in the rotating system and demultiplexed the signal in the stationary system. Aerodynamic data were measured to evaluate the instrumentation system. Comparisons were made between multiplexed and unmultiplexed signals and between measured data and theory.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1972
Accession Number
AD0740773

Entities

People

  • Gerald A. Shockey
  • Thomas H. Bowden

Organizations

  • Bell Flight

Tags

Communities of Interest

  • Air Platforms
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acquisition
  • Bending Moments
  • Boundary Layer
  • Data Acquisition
  • Dynamic Pressure
  • Fixed Wing Aircraft
  • Helicopter Rotors
  • Hot Wire Anemometers
  • Measurement
  • Pressure Distribution
  • Pressure Measurement
  • Pressure Transducers
  • Strain Gages
  • Tail Rotors
  • Test Facilities
  • Time Division Multiplexing
  • Transducers

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerospace Test and Evaluation
  • Radio communications and signal processing.