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Lunar landing aid
Answer for the clue "Lunar landing aid ", 11 letters:
retrorocket
Alternative clues for the word retrorocket
Word definitions for retrorocket in dictionaries
Wikipedia
Word definitions in Wikipedia
A retrorocket (short for retrograde rocket ) is a rocket engine providing thrust opposing the motion of a vehicle, thereby causing it to decelerate. They have mostly been used in spacecraft , with more limited use in short-runway aircraft landing. New uses ...
Wiktionary
Word definitions in Wiktionary
n. A small rocket engine on a larger rocket or spacecraft designed to slow or reverse its motion.
WordNet
Word definitions in WordNet
n. a small rocket engine on a larger rocket or spacecraft that is fired to slow or alter its course
Usage examples of retrorocket.
Or a starship tethered at Phobos could accidentally on purpose act as a retrorocket, slow Phobos down in its orbit, and send it crashing down to the Martian surface.
At that time Claggett would send a radio signal which would activate a small retrorocket in each satellite, causing it to drop dutifully into its assigned position around the Moon.
He fired his retrorockets and put his Gun Cannon down on the road a hundred meters in front of the limousine, landing on the asphalt with a thud and creating huge cracks in the road.
They carried retrorockets just sufficient to slow them at the end of their journey.
At Luna it would be much the way barges are now landed off Bombay, solid-charge retrorockets programmed by ground control—except that it would be much cheaper, two and a half kilometer-seconds change of motion versus eleven-plus, a squared factor of about twenty—but actually even more favorable, as retros are parasitic weight and the payload improves accordingly.
At Luna it would be much the way barges are now landed off Bombay, solid-charge retrorockets programmed by ground control--except that it would be much cheaper, two and a half kilometer-seconds change of motion versus eleven-plus, a squared factor of about twenty--but actually even more favorable, as retros are parasitic weight and the payload improves accordingly.
In the same moment the underside jets cut in, superheated air pumping out like retrorocket thrust.