Why did the first liquid-fuelled rocket fly with its engine at the top?
In short: Robert H. Goddard launched the world's first liquid-fuelled rocket in 1926. While it successfully reached 41 feet, the design was bizarrely inverted. This video explains the physics misconception that led Goddard to build his rocket upside down.
On March 16, 1926, in Auburn, Massachusetts, 44-year-old physics professor Robert H. Goddard launched a device that changed space exploration forever. The rocket, which reached an altitude of 41 feet before landing 200 feet away, featured an unconventional design with the nozzle and combustion chamber positioned at the top, while the propellant tanks sat at the bottom.
This counterintuitive configuration was driven by a flawed theory called the Pendulum Rocket Fallacy. Goddard believed that placing the engine above the center of mass would provide stability, similar to a pendulum hanging from a pivot. This misunderstanding of physics influenced his early engineering, though his pioneering work ultimately laid the foundation for all subsequent rocket designs, including the Saturn V.
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Sources
- Summary by Intellect · source: The Curious Case of the Upside Down Rocket
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