日本航空宇宙学会誌
Online ISSN : 2424-1369
Print ISSN : 0021-4663
ISSN-L : 0021-4663
外惑星および小惑星探査ミッションのためのVEGA軌道の調査
半揚 稔雄
著者情報
ジャーナル フリー

1989 年 37 巻 430 号 p. 544-547

詳細
抄録

Through the use of Venus and Earth gravity assist (VEGA) which significantly increase the spacecraft heliocentric energy it is possible to deliver a spacecraft to the outer planet and the asteroid with a low launch energy but with the additional flight time from Earth to Venus and back to Earth. A numerical investigation for this kind of VEGA trajectory returning to Earth June 1992-January 2002 indicates that similar spectra occur at the synodic interval of 583.9 days (1.6yrs) for Venus and Earth. Also, these spectra repeat in 8 year cycles of 5 opportunities.

著者関連情報
© The Japan Society for Aeronautical and Space Sciences
前の記事
feedback
Top