TheThor DSV-2 was a series ofsounding rockets, test vehicles, andanti-satellite weapons derived from theThorIntermediate-range ballistic missile. It was also used as the first stage of severalThor-derivedexpendable launch systems.^[1]

The DSV-2A was a two-stage rocket, consisting of a DSV-2A / MB-3-II first stage, and an Able-Star / AJ10-104D second stage.^[2] It was launched eight times between 1963 and 1965 fromVandenberg.^[2]

The DSV-2D was launched twice in 1962,^[3] conductingsuborbital research flights for the development of theProgram 437 ASAT. It was a single-stage vehicle, consisting of a Thor DM-21. Launches were conducted fromCape Canaveral Air Force StationLaunch Complex 17A.

The DSV-2E was a single-stage vehicle, using a Thor DM-19. It was launched eight times in 1962, including severalnuclear weapons tests as part ofOperation Fishbowl.^[4] Four launches failed, all of which were carrying livenuclear warheads.^[4] Launches were conducted from Launch Emplacements 1 and 2 onJohnston Atoll.

The DSV-2F was a single-stage vehicle consisting of a Thor DM-19, like the DSV-2E. Three were launched between 1963 and 1964, as part ofProject ASSET,^[5] which involved launching a sub-scale mockup of theX-20 Dyna-Soar to test materials for the larger spacecraft. Launches were conducted fromCape Canaveral Air Force StationLaunch Complex 17B.

The DSV-2G was a two-stage rocket, consisting of a Thor DM-19 first stage, and aDelta second stage. Three were launched between 1964 and 1965 as part ofProject ASSET.^[6] Launches were conducted fromCape Canaveral Air Force StationLaunch Complex 17B.

The DSV-2J was an operational nuclearanti-satellite weapon. 18 were launched between 1964 and 1975.^[7] Most flights were non-intercept tests of the rocket's anti-satellite capabilities, however some later launches carried research payloads. Launches were conducted from Launch Emplacements 1 and 2 onJohnston Atoll.