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Record Details

Record 38 of 4025
A gravity assist primer
Author and Affiliation:
Cesarone, R. J.(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, United States)
Abstract: An account is given of the method by which the 'energy gain' accruing to a spacecraft as a result of its 'gravity-assist', parabolic-trajectory flyby of a massive body, such as a planet. The procedure begins with the solution of the two-body portion of the problem, and the results thus obtained are used to calculate changes with respect to the other massive body in the overall scenario, namely the sun. Attention is given to the 'vector diagram' often used to display the gravity-assist effect. The present procedure is noted to be reasonably accurate for flybys in which the plane of the spacecraft's trajectory is approximately the same as that of the planet's orbit around the sun, or the ecliptic plane; this reduces the problem to one in two dimensions.
Publication Date: Jan 01, 1989
Document ID:
19890063851
(Acquired Nov 28, 1995)
Accession Number: 89A51222
Subject Category: ASTRODYNAMICS
Document Type: Journal Article
Publication Information: AIAA Student Journal (ISSN 0001-1460); 27; 16-22
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 7p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: FLYBY MISSIONS; SPACECRAFT TRAJECTORIES; SWINGBY TECHNIQUE; TWO BODY PROBLEM; HYPERBOLIC TRAJECTORIES; TRAJECTORY ANALYSIS; VOYAGER 1 SPACECRAFT; VOYAGER 2 SPACECRAFT
Imprint And Other Notes: AIAA Student Journal (ISSN 0001-1460), vol. 27, Spring 1989, p. 16-22.
Availability Source: Other Sources
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