Trans Lunar Injection

Encyclopedia : T : TR : TRA : Trans Lunar Injection

Trans Lunar Injection (TLI) is a term describing the propulsion maneuver used to set a spacecraft on a trajectory which will intersect the Moon.

The spacecraft is usually in a parking orbit around Earth at the time of TLI.

The maneuver is usually performed by a rather large rocket engine. On the Apollo missions it was performed by the restartable third (S-IVB) stage of the Saturn V rocket. This particular TLI burn lasted approximately 346 seconds, providing 10,000 to 10,600 ft/s (3.05 to 3.25 km/s) of delta-v, at which point the spacecraft was travelling at approximately 24,500 mph (39,420 km/h).

From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.