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Analysis of a turning point problem in flight trajectory optimizationThe optimal control policy for the aeroglide portion of the minimum fuel, orbital plane change problem for maneuvering entry vehicles is reduced to the solution of a turning point problem for the bank angle control. For this problem a turning point occurs at the minimum altitude of the flight, when the flight path angle equals zero. The turning point separates the bank angle control into two outer solutions that are valid away from the turning point. In a neighborhood of the turning point, where the bank angle changes rapidly, an inner solution is developed and matched with the two outer solutions. An asymptotic analysis of the turning point problem is given, and an analytic example is provided to illustrate the construction of the bank angle control.
Document ID
19930068888
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gracey, C.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 16, 2013
Publication Date
August 1, 1989
Subject Category
Astrodynamics
Meeting Information
Meeting: IFAC, Workshop on Singular Perturbations and Asymptotic Methods in Systems and Control, Boston
Location: Boston, MA
Country: United States
Start Date: August 17, 1989
End Date: August 18, 1989
Sponsors: IFAC
Accession Number
93A52885
Distribution Limits
Public
Copyright
Other

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