Actions for Heliocentric interplanetary low thrust trajectory optimization program, supplement 1, part 2.

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Heliocentric interplanetary low thrust trajectory optimization program, supplement 1, part 2.

Author
Mann, F. I.
Published
Feb 1, 1978.
Physical Description
1 electronic document
Additional Creators
Horsewood, J. L.
Online Version

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Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
The improvements made to the HILTOP electric propulsion trajectory computer program are described. A more realistic propulsion system model was implemented in which various thrust subsystem efficiencies and specific impulse are modeled as variable functions of power available to the propulsion system. The number of operating thrusters are staged, and the beam voltage is selected from a set of five (or less) constant voltages, based upon the application of variational calculus. The constant beam voltages may be optimized individually or collectively. The propulsion system logic is activated by a single program input key in such a manner as to preserve the HILTOP logic. An analysis describing these features, a complete description of program input quantities, and sample cases of computer output illustrating the program capabilities are presented.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19780017163.
Accession ID: 78N25106.
BTS-TR-78-54-SUPPL-1-PT-2.
NASA-CR-135414-APP.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15728719