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Reaction Begins Building U.S. Hypersonic Engine Test Site
Reaction Begins Building U.S. Hypersonic Engine Test Site Dec 18, 2017 Guy Norris, Aerospace Daily & Defense Report http://aviationweek.com/space/reacti...us-hypersonic- engine-test-site Curious. I've only ever known this to be a European endeavor. From above: Construction of the facility follows the award earlier this year of a U.S. Defense Advanced Research Projects Agency (DARPA) contract to test the engine?s pre-cooler heat exchanger, or HTX. The test work, which is due to start in 2018, will focus on running the HTX at airflow temperatures in excess of 1,800 deg F (1,000 deg C), representing inlet conditions at Mach 5. Ah yes, DARPA. I always thought this technology would make for an excellent (military) air-breather. The heat exchanger, in particular, isn't useful in vacuum. There is a point when the SABRE engine gets too high in the atmosphere and ceases to pull in useful amounts of air, so its inlets are closed and the engine switches to "pure rocket mode" using store LOX. I still seriously doubt we'll ever see a Skylon launch itself into orbit with a useful payload. IMHO, we'll see a fully reusable (liquid fueled rocket powered) TSTO long before even a prototype Skylon makes orbit (likely with zero useful payload). I don't doubt that we'll see SABRE engines powering (likely unmanned) hypersonic reconnaissance aircraft and/or hypersonic cruise missiles. Jeff -- All opinions posted by me on Usenet News are mine, and mine alone. These posts do not reflect the opinions of my family, friends, employer, or any organization that I am a member of. |
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Reaction Begins Building U.S. Hypersonic Engine Test Site
On 17-12-18 14:45 , Jeff Findley wrote:
Reaction Begins Building U.S. Hypersonic Engine Test Site Dec 18, 2017 Guy Norris, Aerospace Daily & Defense Report http://aviationweek.com/space/reacti...us-hypersonic- engine-test-site Curious. I've only ever known this to be a European endeavor. [snip] I still seriously doubt we'll ever see a Skylon launch itself into orbit with a useful payload. IMHO, we'll see a fully reusable (liquid fueled rocket powered) TSTO long before even a prototype Skylon makes orbit (likely with zero useful payload). What do you feel about the SpaceX BFS as an SSTO? According to Musk, at https://www.reddit.com/r/space/comme...ng_about_bfr/: "Worth noting that BFS is capable of reaching orbit by itself with low payload, but having the BF Booster increases payload by more than an order of magnitude." If the planned maximum ascent payload of the BFS is 150 tons, that means its SSTO payload could be on the order of 10 tons... Musk also says (at the same place) that SpaceX plans to test the BFS as an SSTO, before they test it with the booster. -- Niklas Holsti Tidorum Ltd niklas holsti tidorum fi . @ . |
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