1. Hydrogen injection and scramjet ignition testing.

2. A new supersonic combustion ramjet, or scramjet, engine gets put through its paces at a NASA research center in a ground-based test that simulated Mach 5 conditions in 2008.

3. Both NASA and DARPA have been dabbling in scramjet technology for years, creating a vast body of knowledge and data for engineers to build upon.

4. Hypersonic propulsion test facility is important for the scramjet ground tests.

5. Once a scramjet is moving fast enough,(sentencedict.com) the jet engine would take over and propel it spaceward.

6. Through the analysis of the configuration of Scramjet nozzle flow field, some design methods of scramjet nozzle and the characteristics of its performance variation were found.

7. The longest previous hypersonic scramjet flight test, performed by a NASA X-43 in 2004, was faster, but lasted only about 10 seconds and used less logistically supportable hydrogen fuel.

8. The methodology for scramjet combustor performance analysis and evaluation is build up.

9. But how does NASA plan to get the scramjet to the supersonic speeds necessary for sustained flight?

10. A scramjet is a type of jet engine that uses compressed air in place of conventional turbines to create thrust. (Read "U. S. Developing Jets That Fly Five Times the Speed of Sound.

11. After learning that the scramjet would reach Mach 6, we couldn't help but reflect on the progress aviation has made in just a century.

12. Here it would reach supersonic speeds and then shift to its scramjet engine. The scramjet scoops up air and mixes it with fuel so it burns as the mixture flows through the engine at supersonic speeds.

13. In just over 100 years, we've gone from the first powered flight to a scramjet capable of Mach 6. Amazing.

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14. Achieving that speed is possible thanks to the craft's specialized rocket engine, a hypersonic scramjet.

15. This study deals with the effect of vitiated air contamination on combustion and scramjet engine ground tests.

16. The idiographic work is as follows:1, The modeling of the scramjet fuel supply system with two phase flow.

17. The research coinstantaneous shows that the boundary transition should be considered, and effective transition method should be adopted to ensure the normal work of the scramjet engine.

18. In such a scheme, a payload vehicle (holding, say, a satellite) would piggyback to high altitude aboard the scramjet, which in theory could reach near-orbital speeds.

19. Earlier this week, the Air Force announced that the X-51 WaveRider, a wingless scramjet, would make its first hypersonic flight.

20. In just over 100 years, we've gone from the first powered flight to a scramjet capable of Mach 6.