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Record Details

Record 33 of 1374
Vertical landing on an asteroid
Author and Affiliation:
Harel, D.(Technion - Israel Inst. of Tech., Haifa, Israel)
Geulman, M.(Rafael Armament Development Authority, Haifa, Israel)
Abstract: This work is concerned with the final approach phase and vertical landing on an asteroid with a power-limited, electrically propelled spacecraft. With gravitational effects taken into account, a new solution to the fuel optimal vertical landing on an asteroid was obtained. In this solution, the spacecraft commanded acceleration is explicitly expressed as a function of vehicle velocity and time to go. Based on qualitative methods of analysis, the guidance strategy and the resulting trajectories were studied. It is shown that these fuel-optimal trajectories effectively assure a vertical soft landing on the asteroid. Results of numerical simulations for the vertical landing, starting from an elliptical orbit are presented.
Publication Date: Apr 01, 1992
Document ID:
19960009736
(Acquired Feb 06, 1996)
Accession Number: 96N16902
Subject Category: ASTRODYNAMICS
Document Type: Conference Paper
Publication Information: Proceedings of the Second International Workshop on Civilian Space Applications; p 142-148
Publisher Information: Israel
Financial Sponsor: NASA; United States
Organization Source: Technion - Israel Inst. of Tech.; Faculty of Aerospace Engineering.; Haifa, Israel
Description: 7p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ASTEROID MISSIONS; AUTOMATIC CONTROL; SPACECRAFT CONTROL; SPACECRAFT LANDING; SPACECRAFT TRAJECTORIES; TRAJECTORY OPTIMIZATION; ELECTRIC PROPULSION; PROPELLANT COMBUSTION; SPACE RENDEZVOUS; SPACECRAFT PROPULSION
Imprint And Other Notes: In its Proceedings of the Second International Workshop on Civilian Space Applications p 142-148 (SEE N96-16888 04-12)
Miscellaneous Notes: Sponsored by NASA. Langley Research Center
Availability Source: Other Sources
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