Thor Able IV – McDonnell Douglas Family: Thor meters Length: 27.2 meters Diameter: 2.44 meters Launch Mass: 52 Low Earth Orbit Capacity: The Thor Able IV was manufactured by McDonnell Douglas with the first launch on 1960-03-11. Thor Able IV has 0 successful launches and 0 failed launches with a total of 0 launches. American orbital launch vehicle. Thor with Able stage derived from Vanguard second stage. Manufacturer McDonnell Douglas is a Commercial USA entity that was founded in and is administered by . McDonnell Douglas has 0 successful launches and 0 failed launches with a total of 0 launches.