Experimental Verification of Helicopter-Rotor Loads-Synthesis Models

Abstract

Accurately synthesising the load in helicopter-rotor components, using measurements taken from fixed components, has the potential to increase safety and reduce operating costs. Two synthesis models, one of which is able to handle noisy and collinear environments, were validated using data from a Eurocopter Squirrel gearbox fitted to DSTO's Helicopter Transmission Test Facility. The aim of the experiment was to test the models under 'challenging' conditions--namely, a noisy and collinear measurement environment. Despite the synthesis techniques being validated, the testing environment did not prove challenging enough (mainly due to insufficient collinearity between the strain gauges). Both the instrumental variable (IV) and least squares (LS) models were able to synthesise the required loads to a high degree of accuracy. The IV model (unlike the LS model) was found to be very sensitive to the chosen gauge combination.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2003
Accession Number
ADA416818

Entities

People

  • Chris G. Knight
  • Frank G. Polanco
  • Phil Ferrarotto
  • Scott A. Dutton

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Acquisition
  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Control Systems
  • Engineering
  • Engineers
  • Fixed Wing Aircraft
  • Helicopter Rotors
  • Helicopters
  • Measurement
  • Rotary Wing Aircraft
  • Simulations
  • Test Facilities
  • Universities
  • Verification

Readers

  • Computational Modeling and Simulation
  • Fluid Dynamics.
  • Systems Analysis and Design