Ranger plan
A Ranger plan (Ranger program) is a moon probe plan of National Aeronautics and Space Administration. I photographed the proximity photograph of the month by a lunar probe. The plan was started in 1959, and nine engines were launched.
Table of contents
Summary
The United States of America explored the aggressive moon as part of the space development race from 1950s through 1960s. Following a lunar probe of the Pioneer Project, an exploration plan including the proximity photography of the month was started in 1959 and was named a Ranger plan. The plan was divided into three phases from block 1 to block 3.
The space probe was comprised of a high sensitive antenna, solar battery, six cameras. I was going to drop a landing capsule equipped with a seismometer on the moon with block 2, but succeeded neither.
The result of this plan was inherited for a following Surveyor plan.
Block 1
For a stage to perform the performance test of the space probe, Ranger 1 and 2 were launched. I was going to perform the examinations of the posture control system on earth circular orbit, but I failed in orbit injection and was able to examine none of them two enough.
Block 2
5 was launched as block 2 by 3. Although I left it, in the earth circular orbit, 3 and 5 did not arrive at the moon by the trouble of the apparatus, and 4 did not transmit observation result. It was a plan to let I separated a capsule, and the surface of the moon make a soft-landing right before the space probe body collided on the surface of the moon, but all were over for failure.
Block 3
Four planes from 6 to 9 were launched from 1964 through 1965. Although an apparatus broke down, 6 achieved complete movement after 7. I transmitted a detailed image to the earth until it collided in a month and thereby succeeded in the close-up of the month. In addition, block 3 was not equipped with a landing capsule, and the space probe which finished observation was a plan lost by the collision with the month.
List
| Name | Launching | The success or failure | Result |
|---|---|---|---|
| Ranger 1 | August 23, 1961 | Failure | Orbit injection failure |
| Ranger 2 | November 18, 1961 | Failure | Launching failure |
| Ranger 3 | January 26, 1962 | Failure | It does not collide in a month |
| Ranger 4 | April 23, 1962 | Failure | The first lunar arrival in the United States It collided in a month, but it is failed by the transmission of data |
| Ranger 5 | October 18, 1962 | Failure | It does not collide in a month |
| Ranger 6 | January 30, 1964 | Failure | It collided in a month, but I observe it, and it is failed by the trouble of the camera |
| Ranger 7 | July 28, 1964 | Success | It collides after observation success in the known sea |
| Ranger 8 | February 17, 1965 | Success | After observation success static; collide in that sea |
| Ranger 9 | March 21, 1965 | Success | It collides in an Alfons's crater after observation success |
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This article is taken from the Japanese Wikipedia Ranger plan
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