Development of Fast-Actuating Valve for Ludwieg Tube Activation

With hypersonic research becoming increasingly relevant, as viable technologies encroach on these speeds, heightened emphasis is being placed on effective methodologies of simulating hypersonic airflows. Specifically, Ludwieg Tubes have distinguished themselves as an effective and economical way to emulate hypersonic flow. In attempt to further increase their utility, researchers are seeking innovative valve solutions to initiate Ludwieg Tube flow, thereby replacing traditional burst diaphragms.Mainstream Engineering proposes to continue development of its novel fast-actuating valve that provides for easier operation and reduced down-time between testing. The Phase II work plan, presented within this proposal, details the fabrication and experimental validation of a proprietary valve design, building on lessons learned during Phase I development and testing, for delivery to an AFRL-designated recipient. This valve will repeatedly seal against 600 psi air, at 450 F, while being able to fully open in less than 50 ms. Upon successful completion of Phase II, Mainstream plans to commercialize this technology for other blowdown wind tunnels and alternative industries that could benefit from a pneumatic valve with hyper-fast actuation. Mainstream has proven its effectiveness as an SBIR contractor with a successful track record of commercializing products over the past 30 years.