NASAのインスタグラム(nasa) - 3月21日 07時07分

3..2..1... Fire! Rocket engine nozzles operate in extreme temperatures and pressures from the combustion process and are complex and expensive to manufacture. That is why a team of engineers at our Marshall Space Flight Center (@NASA_Marshall) developed and proved out a new 3-D printing technique for nozzle fabrication that can greatly reduce costs and development time.

This new process was developed and advanced at NASA to build a less-expensive nozzle in significantly less time. While nozzles may look simple from the outside, they are actually very complex. The new method employs a wire-based additive manufacturing process to precisely close out the nozzle coolant channels, which contain the high pressure coolant fluid that protects the walls from the high temperatures a nozzle must withstand.

Through hot-fire testing, engineers put the nozzle seen here through its paces, accumulating more than 1,040 seconds at high combustion chamber pressures and temperatures. Now, this technology is being licensed and considered in commercial applications across the industry.

Image Credit: NASA/MSFC/David Olive
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