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The Agena A was the first type of Agena to be built. It was launched atop Thor and Atlas rockets, mostly into polar orbits from Vandenberg Air Force Base Launch Complex 75 and Point Arguello Launch Complex 1 respectively.
The Atlas-Agena A was a two-stage rocket using the Atlas D missile as a first stage and the Lockheed Agena A as a second stage. The Agena family of second stages originated in the Atlas-Hustler concept proposed by the U.S. Air Force.
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Using the Atlas E or Atlas F missile as a first stage, the Atlas-Agena B featured an improved version of the Agena A as second stage. The Agena B was 23 feet, 7 inches long and 4 feet, 11 inches wide. It employed one Bell engine capable of producing a thrust of 16,000 pounds.
The Atlas-Agena was an American expendable launch system derived from the SM-65 Atlas missile. It was a member of the Atlas family of rockets, and was launched 109 times between 1960 and 1978. [1] It was used to launch the first five Mariner uncrewed probes to the planets Venus and Mars, and the Ranger and Lunar Orbiter uncrewed probes to the Moon.
Agena A Nitric acid/UDMH propellant rocket stage. The Agena space vehicle was used in large numbers during the 1960s and 1970s as upper stage with SLV-2 Thor, SLV-3 Atlas and SLV-5 Titan boosters to launch a variety of military and civilian payloads into orbit.
Credit: NASA. Nitric acid/UDMH propellant rocket stage. The Agena space vehicle was used in large numbers during the 1960s and 1970s as upper stage with SLV-2 Thor, SLV-3 Atlas and SLV-5 Titan boosters to launch a variety of military and civilian payloads into orbit.
The combined Atlas-Agena rocket, featuring an Atlas booster coupled with an Agena upper stage, was used for launching lunar and planetary probes as well as Earth-orbiting satellites, such as Seasat, where the Agena stage was also the spacecraft.
