|Manufacturer||United Launch Alliance
(formerly Boeing and McDonnell Douglas)
|Country of origin||United States|
|Used on||Delta 4000
|Height||5.9 metres (19 ft)|
|Diameter||2.4 metres (7.9 ft)|
|Mass||6,954 kilograms (15,330 lb)|
|Thrust||43.63 kilonewtons (9,810 lbf)|
|Specific impulse||319 sec|
|Burn time||431 seconds|
The Delta-K is an American rocket stage, used[when?] as the second stage of several variants[which?] of the Delta rocket. As of 25 May 2008, 138 have been launched, and excluding one which was destroyed by the explosion of a lower stage, none have failed. It is propelled by a single AJ-10-118K rocket engine, fueled by Aerozine 50 and dinitrogen tetroxide, which are hypergolic.
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See also 
- Delta K, Encyclopedia Astronautica, date unknown, accessed 2011-02-01.