Scout X-2

Scout X-2 was an American expendable launch system and sounding rocket in the Scout family, flown twice in 1962. It was a four-stage rocket based on the Scout X-1, with an uprated Algol 1D first stage and a more powerful Antares 2A third stage, while the Castor 1A second stage and Altair 1A fourth stage were the same as on the X-1. The first flight, a suborbital launch from Launch Area 3 at the Wallops Flight Facility on 29 March 1962, carried plasma and aeronomy experiments to an apogee of 6,291 kilometres and was successful. The second, on 26 April 1962, carried the Solrad 4B satellite and failed to reach orbit. The upgraded Scout X-2M replaced it.