Thor Delta E1 – McDonnell Douglas Family: Thor meters Length: 28 meters Diameter: 2.44 meters Launch Mass: 68 Low Earth Orbit Capacity: 540 The Thor Delta E1 was manufactured by McDonnell Douglas with the first launch on 1966-07-01. Thor Delta E1 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.