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Propellant Flow Regulator, Rocket Engine, Liquid Fuel, R.H. Goddard, 1926


Display Status:

This object is on display in the Rockets and Missiles exhibition at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Collection Item Summary:

This is a tapered nozzle used as a propellant flow regulator by U.S. rocket pioneer Robert H. Goddard in a test in June 1926, about three months after he had made his historic flight of the world's first liquid propellant rocket on 16 March 1926 . Its purpose was to smooth pulses in the propellant flow and thereby regulate the pressure for constant output pressure in the operation of a rocket motor.

Friction still caused difficulty and he therefore tried other flow regulators. This regulator was therefore experimental and was not used in flight rockets. It was constructed and tested while Goddard was at Worcester, Massachusetts. This object was donated to the Smithsonian in 1959 by Esther C. Goddard.

Collection Item Long Description:

Data Source

National Air and Space Museum


Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


Credit Line

Gift of Mrs. Robert H. Goddard


Tube, partly steel; steel tip; steel conical head; spring inside, probably steel; rubber washer


Overall: 8 1/2 in. long x 1 in. diameter (21.59 x 2.54cm)

Country of Origin

United States of America




PROPULSION-Accessories (to an Engine)

Inventory Number


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