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File:Gemini and Apollo rocket engines.jpg

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English: Three bipropellant engines, the first from the Gemini program and the second and third from the Apollo program. These were used for maneuvering in space. From left to right:
Gemini SE-6
These provided attitude and maneuvering control for the Gemini module. These engines were fired in pairs to provide torque along the three axes of rotation. Sixteen SE-6 engines made up the Reentry Control System (RCS) in the nose of the Gemini spacecraft. These were made of steel, with an ablative nozzle by Rocketdyne, and produced 25 pounds of thrust.
Apollo Command Module SE-8
Twelve of these engines provided reaction control to the Command Module after separation from the service module, including rotation control, rate damping, and attitude control. Produced 93 pounds of thrust.
Apollo Lunar Module R-4D
Four clusters of four engines, one cluster at each corner of the Lunar Module, provided attitude control. Each featured a molybdenum nozzle, was radiation cooled, and provided 100 pounds of thrust. This particular engine was manufactured by Marquardt Corp, part number 228686-501. It was test fired four times during Lunar Module testing.
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Source Flickr: Apollo Rocket Engines
Author Steve Jurvetson

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This image, which was originally posted to Flickr, was uploaded to Commons using Flickr upload bot on 23 December 2011, 02:59 by Huntster. On that date, it was confirmed to be licensed under the terms of the license indicated.
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current03:00, 23 December 2011Thumbnail for version as of 03:00, 23 December 20113,900 × 3,175 (5.27 MB)Flickr upload bot (talk | contribs)Uploaded from http://flickr.com/photo/44124348109@N01/4896792758 using Flickr upload bot

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