The Design of Aircraft Automatic Ride-Smoothing Systems Using Direct-Lift Control.

Abstract

This report shows how a direct-lift motivator can be used to alleviate the response to vertical turbulence of a rigid, combat-type aircraft. Optimal-control and parameter-optimisation techniques are used to design both 'open' and 'closed' loop control systems. Alternative criteria other than simply reducing the normal acceleration response are discussed. The effects of system nonlinearities such as position and rate limits are explored. Both discrete and continuous models of turbulence are used in the analysis. Some nonlinear control solutions are discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1979
Accession Number
ADA085349

Entities

People

  • D. E. Fry
  • J. S. Winter

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Altitude
  • Atmospheric Motion
  • Closed Loop Systems
  • Computational Fluid Dynamics
  • Computational Science
  • Control Systems
  • Control Systems Engineering
  • Differential Equations
  • Linear Systems
  • Low Altitude
  • Mathematical Models
  • Nonlinear Systems
  • Open Loop Systems
  • Plastic Explosives
  • Resonant Frequency

Readers

  • Control Systems Engineering.
  • Systems Analysis and Design