return trajectory
1Free return trajectory — A free return trajectory is one of a very small sub class of trajectories in which the trajectory of a satellite traveling away from a primary body (for example, the Earth) is modified by the presence of a secondary body (for example, the Moon)… …
2Circumlunar trajectory — The trajectory followed by Apollo 13 A Circumlunar trajectory, Trans Lunar trajectory or Lunar free return is a type of free return trajectory which takes a spacecraft from Earth, around the far side of the Moon, and back to Earth. Background The …
3Parabolic trajectory — In astrodynamics or celestial mechanics a parabolic trajectory is a Kepler orbit with the eccentricity equal to 1. When moving away from the source it is called an escape orbit, otherwise a capture orbit.Under standard assumptions a body… …
4Apollo 15, Return to Earth — After the Apollo 15 Lunar Module Falcon lifted from the lunar surface it rendezvoused and docked with the Command/Service Module Endeavour . After transferring across the lunar samples and other equipment, Falcon was jettisoned. It would fire its …
5free-re|turn trajectory — «FREE rih TURN», the trajectory of a spacecraft toward a lunar or planetary orbit which provides for an automatic return to earth if the spacecraft is unable to enter the proper orbit …
6Hayabusa — This article is about the spacecraft. For other uses, see Hayabusa (disambiguation). Hayabusa A computer rendering of Hayabusa above Itokawa s surface Operator …
7Gravity turn — A gravity turn or zero lift turn is a maneuver (see trajectory optimization) used in launching a spacecraft into, or descending from, an orbit around a celestial body such as a planet or a moon. This launch trajectory offers two main advantages… …
8Moon landing — For other uses, see Moon landing (disambiguation). Still frame from the video transmission of Neil Armstrong stepping onto the surface of the Moon at 02:56 UTC on 21 July 1969. An estimated 500 million people worldwide watched this event,… …
9Trans Lunar Injection — Typical lunar transfer trajectories approximate Hohmann transfers, although low energy transfers have also been used in some cases, as with the Hiten probe. [cite web |url=http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1990 007A… …
10Lunar orbit — In astronomy, lunar orbit (also known as a Selenocentric orbit) refers to the orbit of an object around the Moon.As used in the space program, this refers not to the orbit of the Moon about the Earth, but to orbits by various manned or unmanned… …
