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How does trans lunar injection work?
A spacecraft performs TLI to begin a lunar transfer from a low circular parking orbit around Earth. The large TLI burn, usually performed by a chemical rocket engine, increases the spacecraft’s velocity, changing its orbit from a circular low Earth orbit to a highly eccentric orbit.
What was the purpose of the Apollo space missions?
Project Apollo’s goals went beyond landing Americans on the moon and returning them safely to Earth. They included: Establishing the technology to meet other national interests in space. Achieving preeminence in space for the United States.
What is the lunar orbit insertion?
In astronomy, lunar orbit (also known as a selenocentric orbit) is the orbit of an object around the Moon. Lunar orbit insertion (LOI) is the adjustment to achieve lunar orbit, as undertaken by Apollo spacecraft for example. Low lunar orbit (LLO) are orbits below 100 km (62 mi) altitude.
What is a trans Earth injection?
A trans-Earth injection (TEI) is a propulsion maneuver used to set a spacecraft on a trajectory which will intersect the Earth’s sphere of influence, usually putting the spacecraft on a free return trajectory. The maneuver is performed by a rocket engine.
What was the most important Apollo mission?
Apollo 11 was the first manned mission to land on the Moon. The first steps by humans on another planetary body were taken by Neil Armstrong and Buzz Aldrin on July 20, 1969.
What does Apollo mean in space?
A series of space flights undertaken by the United States with a goal of landing a man on the moon. Each Apollo flight carried a crew of three astronauts. It was named after the Greek god of learning, Apollo.
Who all visited Moon?
List
- Neil Armstrong. Apollo 11. August 5, 1930.
- Buzz Aldrin. Apollo 11. January 20, 1930.
- Pete Conrad. Apollo 12. June 2, 1930.
- Alan Bean. Apollo 12. March 15, 1932.
- Alan Shepard. Apollo 14. November 18, 1923.
- Edgar Mitchell. Apollo 14. September 17, 1930.
- David Scott. Apollo 15. June 6, 1932.
- James Irwin. Apollo 15. March 17, 1930.
Was Jim Lovell on the moon?
Lovell is one of only three men to travel to the Moon twice, but unlike the other two, John Young and Gene Cernan, he never walked on it. He accrued 715 hours and 5 minutes in space flights on his Gemini and Apollo flights, a personal record that stood until the Skylab 3 mission in 1973.
How do spacecrafts get into orbit?
Spacecraft like the Hubble Telescope are lifted into orbit by the Space Shuttle. In that case, the space shuttle itself is lifted by rockets into orbit. The spacecraft to be deployed is riding snugly in the cargo bay. At a certain height, the spacecraft is ejected and small rockets on it move it to the proper orbit altitude.
How are spacecrafts like the Hubble telescope lifted into orbit?
Spacecraft like the Hubble Telescope are lifted into orbit by the Space Shuttle. In that case, the space shuttle itself is lifted by rockets into orbit. The spacecraft to be deployed is riding snugly in the cargo bay. At a certain height, the spacecraft is ejected and small rockets on it move it to…
Is it possible to launch directly to the interplanetary trajectory?
It is possible and slightly more efficient to launch directly from the launch pad to the interplanetary trajectory, but you will have an instantaneous launch window and your launch pad needs to cross the plane of the outgoing trajectory to get that efficiency.
How is a spacecraft deployed from the Space Shuttle?
The spacecraft to be deployed is riding snugly in the cargo bay. At a certain height, the spacecraft is ejected and small rockets on it move it to the proper orbit altitude. Deployment of The Tracking and Data Relay Satellite (TDRS-7) from the Space Shuttle Discovery’s cargo bay.