| astronautix.com | Wac Corporal |
The JPL-Ordnance Wac Corporal was an early technology testbed, which led eventually to the operational Corporal rocket of the US Army.
Cal Tech studied pumping of liquid rocket propellants, particularly nitric acid, resulting in successful design in 1945, which was set aside for future use because of difficulty in handling.
Baby Wac rocket, one-fifth scale model of Wac Corporal proposal, flight tested at Camp Irwin by JPL.