Accession Number : AD0428859

Title :   PRELIMINARY INVESTIGATIONS RELATIVE TO MULTIPLE RENDEZVOUS BETWEEN CIRCULAR ORBITS,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF

Personal Author(s) : Roth,H. L.

Report Date : 15 JAN 1964

Pagination or Media Count : 31

Abstract : Combination of a series of Hohmann transfers is considered as a means of accomplishing multiple in-plane rendezvous. It is shown that, for the in-plane case, the velocity penalty associated with visiting additional circular orbits is small compared to the cost of passing from the inner to the outermost orbit. It is furthermore shown that the velocity expenditure for in-plane rendezvous is less than the difference between the circular orbit velocity of the bounding orbits, regardless of the number of orbits visited (starting at one bounding orbit and proceeding in the most economical manner). Some consideration is also given to the problem of multiple threedimensional rendezvous. Prime consideration is devoted to the use of a modified Hohmann transfer with a simple plane change at the outer orbital altitude. The modified Hohmann technique is compared to the bi-elliptic transfer with plane change for certain chosen phasing angles. (Author)

Descriptors :   (*CIRCULAR ORBITS, RENDEZVOUS TRAJECTORIES), (*TRANSFER TRAJECTORIES, CIRCULAR ORBITS), (*RENDEZVOUS SPACECRAFT, TRANSFER TRAJECTORIES), NOMOGRAPHS, ENERGY MANAGEMENT, ELLIPTICAL ORBIT TRAJECTORIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE