Accession Number : AD0774444

Title :   Real-Time Optimal Guidance with Application to Lifting Re-Entry Vehicles.

Descriptive Note : Doctoral thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : South,David J.

Report Date : DEC 1972

Pagination or Media Count : 214

Abstract : A real-time optimal guidance scheme based upon the variation of extremals algorithm for obtaining optimal trajectories was formulated in two phases and applied to a planar lifting re-entry problem. First the variation of extremals algorithm was formulated and used in conjunction with a flexible prediction technique to construct an algorithm for rapidly generating optimal trajectories. Then, based also upon the variation of extremals algorithm, an en route optimal guidance algorithm was developed for guiding a vehicle to desired terminal conditions in the presence of perturbations. (Modified author abstract)

Descriptors :   *Lifting reentry vehicles, *Atmosphere entry, Optimization, Descent trajectories, Guidance, Optimization, Control theory, Theses

Subject Categories : Spacecraft Trajectories and Reentry

Distribution Statement : APPROVED FOR PUBLIC RELEASE