Minimum Time Turns with Thrust Reversal.

Abstract

The object of this study is to find the optimal trajectories and corresponding minimum turning times for a high performance aircraft with and without thrust reversal to perform a prescribed turn, and then to compare those trajectories and times to evaluate the benefit of thrust reversal. Optimal control theory is applied to solve the minimum time to turn optimal control problem, using a suboptimal control problem approach and a second-order parameter-optimization method. The results of the study found that the suboptimal control approach was effective in solving the problem, that thrust reversal is beneficial in reducing turning time if the aircraft's initial velocity is above the corner velocity, and that thrust reversal is not beneficial in performing a minimum time turn without losing energy. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1979
Accession Number
ADA079851

Entities

People

  • Thomas L. Johnson

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Aircrafts
  • Algorithms
  • Altitude
  • Boundary Value Problems
  • Calculus Of Variations
  • Data Sets
  • Differential Equations
  • Equations
  • Equations Of Motion
  • Flight
  • Flight Paths
  • Plastic Explosives
  • Thrust
  • Thrust Control
  • Thrust Reversal
  • Trajectories

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Aviation Science / Aeronautics.
  • Control Systems Engineering.