Performance of a recoverable Tug for planetary missions including use of perigee propulsion and corrections for nodal regression | Zendy

J. Borsody | Zendy

Open Access

Performance of a recoverable Tug for planetary missions including use of perigee propulsion and corrections for nodal regression

Author(s) -

J. Borsody

Publication year - 1976

Publication title -

astrodynamics conference

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.1976-809

Subject(s) - propulsion , aeronautics , nodal , tug of war , aerospace engineering , astrobiology , computer science , physical medicine and rehabilitation , engineering , physics , medicine , anatomy , astronomy

Mathematical equations are derived by using the Maximum Principle to obtain the maximum payload capability of a reusable tug for planetary missions. The mathematical formulation includes correction for nodal precession of the space shuttle orbit. The tug performs this nodal correction in returning to this precessed orbit. The sample case analyzed represents an inner planet mission as defined by the declination (fixed) and right ascension of the outgoing asymptote and the mission energy. Payload capability is derived for a typical cryogenic tug and the sample case with and without perigee propulsion. Optimal trajectory profiles and some important orbital elements are also discussed.

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