Scout X-2M with P35-1 payload (DMSP-1, FTV-3501), May 24, 1962
FunctionExpendable launch system
Country of originUnited States
Height22 metres (72 ft)
Diameter1.02 metres (3 ft 4 in)
Mass17,000 kilograms (37,000 lb)
Associated rockets
Launch history
Launch sitesPoint Arguello LC-D
Total launches3
First flight1962-05-24
Last flight1963-04-26
First stage – Algol 1D
Powered by1 solid
Maximum thrust440 kilonewtons (99,000 lbf)
Burn time44 seconds
Second stage – Castor 1A
Powered by1 solid
Maximum thrust286 kilonewtons (64,000 lbf)
Specific impulse247 sec
Burn time27 seconds
Third stage – Antares 2A
Powered by1 X-254
Maximum thrust93 kilonewtons (21,000 lbf)
Specific impulse293 sec
Burn time36 seconds
Fourth stage – MG-18
Powered by1 Solid

Scout X-2M was an American expendable launch system which was flown three times between May 1962 and April 1963. It was a four-stage rocket, based on the earlier Scout X-2, but with an MG-18 upper stage instead of the Altair used on the X-2. It was a member of the Scout family of rockets.

The Scout X-2 was an all-solid rocket, with an Algol 1D first stage, a Castor 1A second stage, an Antares 2A third stage, and an MG-18 fourth stage. It was launched from Launch Complex D at Point Arguello, and was used for the launch of P-35 weather satellites.

The first Scout X-2M was launched 24 May 1962, carrying P35-1, but failed to reach orbit. The second flight, launched at 11:44 GMT on 23 August, was the only successful launch to be made by an X-2M, placing P35-2 into low Earth orbit. The final launch, with P35-4 occurred on 26 April 1963, and like the first flight, it failed to reach orbit.


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