Optimal aeroassisted guidance using Loh's term approximationsThis paper presents three guidance algorithms for aerocapture and/or aeroassisted orbital transfer with plane change. All three algorithms are based on the approximate solution of an optimal control problem at each guidance update. The chief assumption is that Loh's term may be modeled as a function of the independent variable only. The first two algorithms maximize exit speed for fixed exit altitude, flight path angle and heading angle. The third minimizes, in one sense, the control effort for fixed exit altitude, flight path angle, heading angle and speed. Results are presented which indicate the near optimality of the solutions generated by the first two algorithms. Results are also presented which indicate the performance of the third algorithm in a simulation with unmodeled atmospheric density disturbances.
Document ID
19890065264
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mceneaney, W. M. (California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Astrodynamics
Report/Patent Number
AIAA PAPER 89-3548
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference