much longer duration than previous tests
Quote from: 8900 on 05/27/2010 10:03 ammuch longer duration than previous tests Previous tests ? there was no any other tests except this one ( ok thats not includes the x-43 , hyfly and the ASLAM program but those were other programs ) .
W00T, Mach 6!Gotta love it.
Quote from: Arthur on 05/27/2010 12:31 pmW00T, Mach 6!Gotta love it.Other than it only reached Mach 5 on this flight. Still that is hot!http://blog.seattlepi.com/aerospace/archives/207916.asp#extended
The more than 200 second burn by the X-51's Pratt & Whitney Rocketdyne-built air breathing scramjet engine accelerated the vehicle to Mach 5. The previous longest scramjet burn in a flight test was 12 seconds in a NASA X-43.
This has little to do with spaceflight. The feasibility of using scramjets for space launch is doubtful.
Quote from: Jim on 05/27/2010 07:48 pmThis has little to do with spaceflight. The feasibility of using scramjets for space launch is doubtful. Why doubtful ? what about TSTO with first stage powered by TBCC ( scramjet with a turbine engine like DARPA's VULCAN ) and the second stage powered by rocket engine's . And thats only one scenario there are plenty others like RBCC ( scramjet with rocket ejectors ) like the Marquardt's SERJ concept and NASA's GTX concept http://www.grc.nasa.gov/WWW/RT/RT2002/5000/5880trefny.html , http://gltrs.grc.nasa.gov/reports/2002/TM-2002-211495.pdf .
Quote from: Jim on 05/27/2010 07:48 pmThis has little to do with spaceflight. The feasibility of using scramjets for space launch is doubtful. Rage, rage, rage...On searching this forum for the term "scramjet" one gets back three pages of results.... Evidently the forum community disagrees with you, Jim.So does the Air Force, which says that this test vehicle is a tech developer for an eventual TSTO launcher...First stage will be a TBCC burning kerosene reaching mach 6, second stage will be a rocket powered upper stage follow on to the X-37.They'll likely develop the two programs separately, with the first stage being billed as a Global Strike vehicle, and the second stage being treated in the black much like X-37, when suddenly, they get the brilliant idea to launch the second off the first and nobody in congress or NASA will be able to do squat about it.
Quote from: mlorrey on 05/28/2010 07:50 amThey'll likely develop the two programs separately, with the first stage being billed as a Global Strike vehicle, and the second stage being treated in the black much like X-37, when suddenly, they get the brilliant idea to launch the second off the first and nobody in congress or NASA will be able to do squat about it.I have find an AFRL study that may refer to your words http://www.dtic.mil/ndia/2007disrupt/Borger.pdf .
They'll likely develop the two programs separately, with the first stage being billed as a Global Strike vehicle, and the second stage being treated in the black much like X-37, when suddenly, they get the brilliant idea to launch the second off the first and nobody in congress or NASA will be able to do squat about it.
What about intercontinental transport? I think that could be a real hit.
Quote from: sanman on 05/27/2010 10:45 pmWhat about intercontinental transport? I think that could be a real hit.Oh, really? Intercontinental transport that needs a rocket booster will be a real hit?