M55E1
{{More citations needed|date=August 2008}}
M55E1 is the designation of a United States solid fuel rocket that is used as the first stage of several expendable launch systems.
Uses
The M55E1 is used in the following systems:
Earlier versions of the Minuteman used the M55A1 for the first stage.{{cite web|first=Ed|last=Kyle|url=http://www.spacelaunchreport.com/mmsum.txt|archive-url=https://archive.today/20120911175129/http://www.spacelaunchreport.com/mmsum.txt|url-status=usurped|archive-date=September 11, 2012|title=Minuteman Launch Vehicle Flight History by Variant/Year (1959–2009)|publisher=Space Launch Report}} The US Army Homing Overlay Experiment also used the M551E1 as the first stage.{{cite web|first=Andreas|last=Pasch|url=http://www.designation-systems.net/dusrm/app4/hoe.html|title=Directory of U.S. Military Rockets and Missiles}}
Key Facts
- Manufacturer: Thiokol
- First Launch: March 14, 1970
- Liftoff Thrust: 935,000 kN (210,196 lbf)
- Total Weight: 30,000 kg (66,000 lb)
- Diameter: 1.68 m (5.51 ft)
- Length: 16.0 m (52.00 ft){{cite web|title=M55E1|publisher=Encyclopedia Astronautica|first=Mark|last=Wade|url=http://www.astronautix.com/lvs/m55e1.htm|url-status=dead|archiveurl=https://web.archive.org/web/20080830050939/http://astronautix.com/lvs/m55e1.htm|archivedate=2008-08-30}}