Identification of an Adequate Model for Collective Response Dynamics of a Sea King Helicopter in Hover

Abstract

Mathematical representation of vertical acceleration response characteristics of helicopter in hover has been developed, including blade flapping, inflow, and rotor speed dynamics. A Maximum Likelihood parameter estimation technique has been applied to assess the adequacy of the model, and to identify the relevant parameters, using flight data from a Sea King Mk 50 helicopter. A number of conclusions related to the validity of the modelling approach have resulted from comparisons between predicted and identified parameters, and further investigation of some aspects is indicated. Keywords: Sea king Mk 50 helicopters; Vertical acceleration; Parameter identification; Linear models; Rotor aerodynamics; Australia.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1988
Accession Number
ADA208060

Entities

People

  • R. A. Feik
  • R. H. Perrin

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Aerodynamics
  • Aeronautical Engineering
  • Air Force
  • Air Masses
  • Aircrafts
  • Algorithms
  • Databases
  • Department Of Defense
  • Engineering
  • Equations
  • Frequency
  • Helicopters
  • Measurement
  • Moment Of Inertia
  • Resonant Frequency
  • Standards

Readers

  • Aerodynamics.
  • Computational Modeling and Simulation
  • Explosive Engineering.