Figure 106: Combustion chamber and nozzle, Winter 1926

Authors

Esther C. Goddard

Document Type

Photograph

Date

Winter 1926

Keywords

Robert Goddard, rocketry, liquid-propellant rocket, combustion chamber

Description

Photograph of a combustion chamber and nozzle made in 1926 before Robert Goddard's landmark March 16, 1926 rocket launch. Following December 6, 1925 (the day Goddard achieved the first liquid-fuel rocket to lift its own weight), he realized a successful launch required making the rocket as streamlined and light as possible. Despite working for years to develop pumps and engines for rockets, he would now be relying on the pressure of oxygen evaporated within a liquid oxygen tank.

It is important to note that many sources incorrectly claim that forgoing the pumps and engines is the breakthrough that made the December 6 lift possible, but this is untrue. Goddard writes in both his diary and subsequent reports about using pumps and engines in the December 6 test, as well as the realization that he would need to eliminate them in order to produce a light enough rocket to achieve that first launch.

Following indoor static tests conducted at Clark University in January 1926, Goddard was ready to construct a rocket as light as possible of the purpose of obtaining a successful flight. This combustion chamber and nozzle was used in the unsuccessful March 6, 1926 test. Due to the aluminum bottom of the chamber burning through, slight variations were made to these parts for March 16. More detailed photographs of the chamber and nozzle can be seen in Figures 107 and 108.

This photograph was used in Goddard's "Report on the Development of a Liquid Propelled Rocket". This is the first time that photographs of these rocket parts have been made available for online viewing, and together they represent the most granular visual documentation of the March 16, 1926 rocket and its leadup in existence. An excerpt of that report covering everything between December 6, 1926 and March 16, 1926 can be found here.

Photographs were scanned at 400dpi.

Comments

Recommended Citation

Goddard, Esther C., "Figure 106: Combustion chamber and nozzle, Winter 1926" (1926). March 16, 1926: The First Liquid-Propellant Rocket Launch. 5.
https://commons.clarku.edu/goddardlaunch/5