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Completed TRL 5 (started at 3, targeting 5)
Primary activities for this phase of the project include (1) reviewing data produced by the FY22 experiments to update CFD modeling practices and capture lessons learned for general spike ejector design, (2) use the Loci/CHEM CFD code to design a small-scale spike ejector to operate with steam at conditions commonly produced at SSC's E-3 test stand, (3) Conduct aerodynamics testing to experimentally validate the ejector's design and performance.
Demonstration of the spike ejector's performance will utilize an existing SLS-developed H2/O2 igniter to serve as the core of a steam generator. The experimental testbed used to prove out the ignitor is still in place at Purdue University and can be leveraged for low-cost steam ejector testing. If successful, the result of the project will be the demonstration of a high-performance steam-driven spike ejector which could see broad adoption in large scale rocket testing and industrial vacuum processes.
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This is early/mid-stage (TRL 5) — the most realistic path in is NASA SBIR/STTR, which funds small businesses and research institutions to develop technology aligned with NASA's needs (equity-free, phased funding). Check whether a current SBIR/STTR solicitation topic overlaps with this project's technology area, or contact the project directly (above) to ask.
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