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The Agena Target Vehicle (/ ə ˈ dʒ iː n ə /; ATV), also known as Gemini-Agena Target Vehicle (GATV), was an uncrewed spacecraft used by NASA during its Gemini program to develop and practice orbital space rendezvous and docking techniques, and to perform large orbital changes, in preparation for the Apollo program lunar missions. [1]
The first Agena-D launch was of KH-4 #7 on June 28, 1963, and a total of 269 Agena-Ds were launched. The Agena-D was used to launch KH-7 GAMBIT and KH-8 Gambit 3 reconnaissance satellites, three Mariner probes to Venus and the two Mariner space probes to Mars. Thor-Agena flew for the last time in 1972 when it launched a KH-4B satellite.
The result was the Atlas LV-3 Agena D, a standardized version of the Atlas D core and Agena B which would be the same on every launch (at least as far as the Atlas was concerned, Agena Ds often still had customized setups, especially for DoD payloads). The Agena D first flew in July 1963, starting a series of 15 successful launches for NASA and ...
Thor-Agena D (Thor-DM21 Agena-D or Thor-SLV2 Agena-D) was used for 83 launches between 28 June 1962 and 17 January 1968 [7] Includes a variant with Solid Rocket Boosters (TAT Agena-D or Thor-SLV2A Agena-D) [8] First launch: 28 June 1962 with KH-4 19; Last launch: 17 January 1968 with Multigroup 3 and Setter 1B-2
Forty-three launches took place from 1966-72 with two complete failures and one partial. [2] [3] [5] [6]The launch of a KH-4A photo reconnaissance satellite on May 9, 1967, malfunctioned when the Thor's first stage failed to cut off on schedule and continued burning until LOX depletion, thus putting the satellite into an incorrect orbit that seriously reduced its image quality.
A book cover is any protective covering used to bind together the pages of a book. Beyond the familiar distinction between hardcovers and paperbacks , there are further alternatives and additions, such as dust jackets , ring-binding, and older forms such as the nineteenth-century "paper-boards" and the traditional types of hand-binding .
Agena may refer to: Keiko Agena (1973), an American actress; Beta Centauri, a star; RM-81 Agena, a rocket upper stage family developed by Lockheed, especially the Agena target vehicle used in preparation for the Apollo program lunar missions; AMD K10, a processor codenamed "Agena"
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