Thorad-Agena

Thorad-Agena

The last Thorad Agena SLV-2G with four Poppy spacecraft
Manufacturer	Douglas
Country of origin	United States
Size
Height	SLV-2G: 32.9m (107.9 ft) SLV-2H: 34m (111 ft)
Diameter	2.44m (8 ft)
Mass	SLV-2G: 91,400kg (201,500 lb) SLV-2H: 88,731kg (195,618 lb)
Stages	2
Launch history
Status	Retired
Launch sites	Vandenberg AFB, SLC-1, SLC-2E, SLC-3W
Total launches	43 (30 SLV-2G, 13 SLV-2H)
Success(es)	40 (28 SLV-2G, 12 SLV-2H)
Failure(s)	2 (1 SLV-2G, 1 SLV-2H)
Partial failure(s)	1 (SLV-2G)
First flight	SLV-2G: 9 August 1966 SLV-2H: 5 June 1969
Last flight	SLV-2G: 14 December 1971 SLV-2H:25 May 1972
[edit on Wikidata]

Thorad-Agena was an American expendable launch system, derived from the Thor and Delta rockets.^{[1][2][3][4][5]}

The first stage of the rocket was a stretched Thor variant named "Long Tank Thrust Augmented Thor". The Long Tank Thor first stage was later adopted by NASA's Delta program for its "Thrust Augmented Improved Delta", which first flew in 1968. The second stage was the Agena-D, which had already been used in conjunction with the standard configuration Thor, as the Thor-Agena. Three Castor rockets would be used as boosters.

Most launches carried Corona (KeyHole) reconnaissance satellites, particularly spacecraft of the KH-4 series, however some scientific and technology development satellites were also flown, mostly towards the end of the program.