Low Cost Free-Flight Scramjet Test Technique
Department of Defense
Defense Advanced Research Projects Agency
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77 Raynor Ave, Ronkonkoma, NY, 11779
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AbstractDevelopment of a low-cost, near term approach to flight testing a hypersonic, storable fuel, scramjet engine using ballistic range technology is proposed. Flight-testing is easily the most expensive component of the triad of computational fluid dynamics (CFD), ground-testing and flight-testing needed to develop and demonstrate sustained and accelerating airbreathing flight at hypersonic speeds. Cost reduction by a factor of 100 to 200 relative to rocket launching a full-scale engine is sought. The proposed approach will leverage off GASL's low-cost, rapid prototyping capabilities for scramjet engines for wind tunnels and for NASA's Hyper-X flight test program, Boeing's prior experience in launching a scramjet from the SHARP gun at LLNL, and prior Army Research Lab personnel in data telemetry from gun-launched munitions. Essential aspects of the proposed approach are use of closely coordinated CFD and ground-testing to maximize the flight data yield and minimize the risk and cost, and use of a controlled flight environment to permit proper simulation of flight dynamic pressure. Flight speeds from Mach 6 to 12 are considered within existing ballistic range capabilities. Mach 8 is the proposed test point since it supports the goals of the HyTech and ARRMD programs.
* information listed above is at the time of submission.