Thor Delta L – McDonnell Douglas Family: Thor meters Length: 35 meters Diameter: 2.44 meters Launch Mass: 89 Low Earth Orbit Capacity: 300 The Thor Delta L was manufactured by McDonnell Douglas with the first launch on 1969-08-27. Thor Delta L has 0 successful launches and 0 failed launches with a total of 0 launches. American orbital launch vehicle family with Thor first stage and a delta 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.