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LEGOs And Laughing Gas: Private Company Scores DARPA Contract For New Rocket Engine

A hot-fire test of Rocket Crafter's hybrid engine. Photo: RCI

A central Florida rocket company received over $500,000 from the Department of Defense to develop and test a new rocket engine.

The DoD’s experimental research arm, DARPA,is interested in a rocket engine in development from private space company Rocket Crafters.

The Titusville based company is working on a hybrid rocket engine that uses both solid and liquid fuel. Parts of the engine are fabricated using 3D printers.

Rocket Crafter’s CEO and former NASA Astronaut Sid Gutierrez said the engine is safer and more reliable than traditional engines.

He says that dependability also lowers the cost of the rocket.“DARPA is very interested in our engine because it offers them to do some things at a much lower cost”

The company uses Acrylonitrile Butadiene Styrene (ABS) for its solid fuel cells — that’s the same material used to make LEGO bricks. It also uses nitrous oxide, or laughing gas, as an oxidizer.

The $542,600 contract will pay for the development of the 8 foot long 10 inch diameter engine, as well as a test stand to measure it’s power. “We will actually be testing it at a location in Cocoa, and we’ll be building the fuel grain itself down on Florida’s Space coast as well,” said Gutierrez.

DARPA asked Rocket Crafters to demonstrate the engine can provide 500 pounds of thrust, as well as the ability to throttle up and down. Gutierrez expects to demonstrate the engines abilities to meet those requirements later this year.


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Brendan Byrne

About Brendan Byrne

Space Reporter and 'Intersection' Producer

Brendan covers the space beat for WMFE, reporting on rocket launches from Florida's Space Coast to the latest scientific discoveries in our universe. He host's WMFE's space exploration podcast "Are We There Yet?" He also helps produce WMFE's twice-weekly public affairs show "Intersection," working with host ... Read Full Bio »

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