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Boeing's X-51 WaveRider Jet Crashes In Mach 6 Attempt
An anonymous reader writes "Boeing's experimental hypersonic X-51 WaveRider aircraft crashed today during an attempt to hit Mach 6 while traveling over the Pacific Ocean. The cause of the crash was a faulty control fin, which compromised the test before the Scramjet engine could be lit. A vehicle traveling at Mach 6 (six times the speed of sound) would be able to travel from New York to London in just one hour."
Have gnu, will travel.
It takes 2-3 hours to get through security at the airport, and 1-2 hours to get bags and transportation at the other end, plus an hour commute time to the hotel. I'd rather have a big plane with a lay flat bed, and show up the next morning.
It's always a little strange to see the 'New York to London' figure given for something that is fairly clearly intended for blunt-force diplomacy, not passenger travel.
We ditched the Concorde years ago because there weren't enough customers to make flying that fast economic.
Why not build several, perhaps 3, at the time?
I doubt it would make the project three times as expensive.
They actually built 4. The first one flew for 143 seconds at hypersonic speeds, during the 2nd flight the engine shut down prematurely due to airflow disruption, and the 3rd flight is discussed in the linked article that no one is reading. They still have one more, and I am guessing they documented the design somewhere so they could probably build additional vehicles in the future if need be.
It's not about flying that fast, it's about operating a supersonic combustion engine to produce positive net thrust. Anyone can stick a rocket on the back of a tube and fly fast, but you have to carry all of your oxidizer with you (or use a monopropellant). With this you just carry the fuel and let the shock transition form the compressor for your jet engine. Of course, it's not quite that simple, since you can't slow down the flow to be subsonic and still achieve + thrust, so you've got to make combustion occur in a flow that's faster than the speed of sound.
Is it just my observation, or are there way too many stupid people in the world?
when writers should be acknowledging that such meaningful (ie, passenger and cargo) flights will never happen.
"Never" encompasses a very long period of time, and should almost never be used in speaking about technology. I'm sure 250 years ago people would have also said it would never be possible to communicate with another person on the other side of the planet in real-time, and yet here we are.
"None can love freedom heartily, but good men; the rest love not freedom, but license." --John Milton