Pioneer F&G

 While working at Convair in San Diego, CA, Martin Hollmann designed the Pioneer F and G Payload Adapter and helped design the Equipment Module for the D-1 Centaur. He also designed an advanced D-1 Centaur tank. The D-1 Centaur is a high energy (liquid oxygen and hydrogen propelled) upper stage which was initially designed by Dr. Krafft Ehricke. An Atlas or Minuteman was used as a 1st stage booster.