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by M.G. Siegler

 

Boeing’s Proposed Hypersonic, Mach 5 Plane is Really, Really Fast

www.wired.com

Eric Adams:

The craft would travel at up to Mach 5, enabling it to cross the Atlantic Ocean in just two hours and the Pacific in three. (A merely supersonic aircraft flying between Mach 1 and Mach 2 would take an hour or two longer.)
The plane is fast, but it could have been even faster. “We settled on Mach 5 version,” says Kevin Bowcutt, Boeing’s senior technical fellow and chief scientist of hypersonics, noting that exceeding Mach 5, or about 3,800 mph, requires far more advanced engines and materials. Plus, it’s not worth it. “This aircraft would allow you to fly across the ocean and back in one day, which is all most people would want. So why go past those boundaries and complicate it? The world’s just not big enough to go much faster than Mach 5.”

Want. Immediately. And:

Though Boeing hasn’t decided the final dimensions, the airplane (which doesn’t have a name yet) would be larger than a business jet but smaller than a 737, Bowcutt says, so presumably seating between, say, 20 and 100 passengers. It would cruise at 95,000 feet, which is 30,000 feet higher than the supersonic Concorde flew, and a full 60,000 feet higher than the average airliner. That altitude maximizes the efficiency of the engines and keeps turbulence to a minimum, since the air density is so much lower that far up in the air.
The G-force feeling upon takeoff would last a full 12 minutes as the plane accelerated to cruising speed (on a conventional craft the feeling lasts just a few seconds) but the cruising-altitude experience should be serene, with stunning views featuring the earth’s curvature at the horizon and the blackness of space above. “Other than that you would also weigh a bit less,” Bowcutt says. “At that altitude you’ll be a few pounds lighter than on the ground.”

I'm 100% sold on this. I'm sure a trip would not be cheap, but if time really is money... Sadly, it sounds like this is 20-30 years away...

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