Acoustic Igniter, Phase II

An acoustic igniter eliminates the need to use electrical energy to drive spark systems to initiate combustion in liquid-propellant rockets. It does not involve the use of catalysts (which have a limited life), it does not exhibit typical wear and tear as seen in spark and catalytic igniters, and it is simple in design with no moving parts. Orion's proposed Acoustic Igniter is expected to offer a long-life, highly reliable ignition system that does not require high-voltage electrical connections. It is less complex to operate and simpler than a traditional ignition system. Orion's primary technical objective is to produce an acoustic igniter design that will ignite combustion of common liquid rocket fuel and oxidizer combinations such as gaseous oxygen and kerosene, and oxygen/methane. During Phase 1, we analyzed the operational issues that inhibit acoustic igniter performance. Based on these results, Orion will built a prototype unit, tested it, and evaluated its performance. This work established a basis for the follow-on Phase 2 effort to refine the design and upgrade the technology level of the acoustic igniter.

Potential NASA Commercial Applications: This system could be utilized in the commercial space sector in the small-sat or nano-sat arena. The simplicity, low weight and low cost are ideal for these commercial applications. In our program we intend to test the system in conjunction with a commercial thruster program which we are involved in to demonstrate this application

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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