MINIMUM ENERGY LOSS HEADING CHANGES FOR HYPERSONIC FLIGHT FROM ORBIT,
Abstract
Velocity requirements for minimum energy loss during orbit turning were derived for both the aerodynamic synergetic mode of transfer and for the pure rocket bielliptic transfer. Velocity requirements obtained through an optimal energy transfer study are compared to velocity requirements for a rocket transfer. The comparison indicates that there are large areas of near-earth transfer regimes where a synergetic transfer requires substantially less fuel than the corresponding rocket transfer. Various vehicle design problems are discussed in an examination of minimum energy loss inclination changing maneuvers. Indicated total heat, indicated maximum heat rates, and normal wing loading are included for each trajectory considered. A simple control scheme is devised from the results of the optimization program. This simple model produces near-optimal performance and it also can be modified to overcome structural difficulties. The results of the memorandum indicate that synergetic transfers can be investigated by simple numerical schemes. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0610527
Entities
People
- Russell D. Shaver
Organizations
- RAND Corporation