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Originally posted by SLAYER69
reply to post by Big-Brain
Here is something that shows for a fact that it wont work!
Documented proof it would not fly! according to your logic.
Two propulsion systems were used by Surveyor I. The main retrorocket employed a solid propellant in a spherical steel case. Its thrust
was of the order of 8000 to 10000 pounds (35,500 to 44,500 newtons), depending upon temperature.
The second, or vernier, propulsion system used hypergolic liquid propellants.
It is believed to have used an intricate coordination of retro-rockets to slow down the 3,000lb (1,360 kg) spacecraft from 6,000 mph (9,600 km/h) to six mph (9.65 km/h).
The Luna 9 automatic lunar station that achieved the soft landing was a spherical body with a diameter of 58 centimeters and a mass of 99 kg.
At an altitude of 8300 km the spacecraft was oriented for retro-rocket firing and its spin was stopped. At 75 km altitude, 48 seconds before landing at a velocity of 2.6 km/s, the radar altimeter sent commands to jettison the side modules, inflate the airbags, and begin retrorocket firing. At 250 meters from the surface the main retrorocket was turned off and the four outrigger engines were used to slow the craft. At a height of about 5 meters a contact sensor touched the ground, the engines were shut down, and the landing capsule was ejected, impacting the surface at 22 km/h, bouncing several times and coming to rest in Oceanus Procellarum.
Scientists at the Jet Propulsion Laboratory in Pasadena, California began counting down the spacecraft's descent from an altitude of about 60 miles (95 km) from the Moon's surface, when Surveyor was travelling at about 6,100 mph (9,800 km/h).
The altitude marking radar started the powerful main braking rocket. This burned out in about 40 seconds, about 25 miles (40 km) above the Moon's surface. The rocket's speed had been reduced to 250 mph (400 km/h).
By the time Surveyor was 13 feet (four metres) from its target it had been slowed to about eight mph (13 km/h).