Scout X-2M

Scout X-2M was an American expendable launch system in the Scout family, flown three times between May 1962 and April 1963. It was a four-stage all-solid rocket based on the Scout X-2, with an Algol 1D first stage, a Castor 1A second stage, an Antares 2A third stage and an MG-18 fourth stage instead of the Altair used on the X-2. Launched from Launch Complex D at Point Arguello, it carried P-35 weather satellites. The first flight on 24 May 1962 and the last on 26 April 1963 failed to reach orbit, while the second, on 23 August 1962, was the only successful X-2M launch and placed P35-2 into low Earth orbit.