This is a cutaway of a typical liquid propellant rocket engine of U.S. rocket pioneer Robert H. Goddard and dates to the 1930s. It was used during experiments at Roswell, New Mexico. Goddard normally used the propellants liquid oxygen and gasoline.
This object was found in the Smithsonian collections, but likely was originally part of a major gift of Goddard artifacts to the Smithsonian by the Daniel and Florence Guggenheim Foundation in 1950.
This object is on display in Rockets & Missiles at the Steven F. Udvar-Hazy Center in Chantilly, VA.