The lightweight aluminum engine nozzle is designed with small internal channels to keep it from melting during liftoff.
In order to be able to carry heavier payloads through deep space, NASA designed a lightweight rocket engine nozzle made of aluminum that can still withstand the heat of launches. NASA recently tested two 3D printed nozzles at the Marshall Space Flight Center in Huntsville, Alabama, proving that they can operate in the most demanding deep space environments, the space agency announced.
The only problem is that aluminum has a very low tolerance to extreme heat, and that’s why it is typically not used for additive manufacturing of rocket engine parts. RAMFIRE set out to create a weldable type of aluminum that is heat resistant enough for use on rocket engines. The RAMFIRE nozzles are designed with small internal channels that keep them cool enough to prevent melting.
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