This is the launch platform, also called the firing pedestal, for the U.S. Army's Corporal surface-to-surface missile. A truck pulled the missle on a trailer, and a self-propelled, hydraulically operated erector placed it on the pedestal. The four moveable arms secured the missile in place. An accompanying split level made sure the missile stood on level ground. The pyramid-like strucutre in the middle of the pedestal channeled the exhaust gases away from the launch site--a feature derived from the German V-2 rocket and also adapted for the Army's Redstone ballistic missile.
The U.S. Navy Disposal Division Supply Depot at Port Hueneme, California, transferred this platform to the Museum in 1966.
This object is on display in Rockets & Missiles at the Steven F. Udvar-Hazy Center in Chantilly, VA.