New Scram-Jet engine tested in Australia can reach Mach 10..sow what is that in MPH?
2007-06-17 05:10:13 · 4 answers · asked by Robert B 7 in Science & Mathematics ➔ Physics
It depends on the temperature of the air. Mach is the speed of sound, which varies with air temperature.
At the surface of the Earth (sea level), on an average day, the speed of sound is about 770 mph, so your engine would go 7700 mph. That's impressive. At the altitude in which such a plane would fly, you could expect temperatures down to -70F, at which the speed of sound drops to 660 mph, and your engine to 6600 mph. That's still impressive.
The National Aerospace Plane was supposed to be a vehicle capable of reaching orbit and also operating as a specialized commercial aircraft (like the SST - you wouldn't use this to fly from London to Paris, but more like London to Tokyo or London to Buenos Aires). It was supposed to use a three-phase conventional/ram jet/scram jet engine system, but this was 20 years ago, and no one could figure out how a scramjet would work.
You see, a conventional aircraft engine uses blades to slow air to a stop before using its oxygen to support the combustion of the jet fuel. A ram jet manages to burn fuel while the air is moving. It's tricky, because moving air tends to blow out a flame.
A scram jet burns fuel while the air from which it gets its oxygen is moving through the engine at supersonic speeds. That's tricky, and congrats to the Aussies for managing it.
Such a plane would need at least a conventional engine, because no one is having a scram jet engine take off from an airport in a populated area. But if it took 30 minutes to reach a safe altitude, and another 30 minutes to land, it could get from London to Sydney, a distance of 10500 miles in 1.6 + 1 hours, or 2.5 hours.
2007-06-17 05:25:00 · answer #1 · answered by TychaBrahe 7 · 2⤊ 1⤋
Mach 10 In Mph
2016-12-08 22:53:55 · answer #2 · answered by ? 4 · 0⤊ 0⤋
How Fast Is Mach 10
2016-10-02 07:48:05 · answer #3 · answered by ? 4 · 0⤊ 0⤋
331.4 +.06T
This means that mach 1 is about 331.4 meters per second. This comes out to 740 mies/hr. This is the speed of mach 1.
Mach 10 is ten times this or approx 7400 mph.
2007-06-17 05:23:38 · answer #4 · answered by eric l 6 · 1⤊ 0⤋
Mach 10 = 10 times the speed of sound in air at sea level. 7614 mph.
2007-06-17 05:16:43 · answer #5 · answered by Swamy 7 · 2⤊ 0⤋
7612 MPH at sea level
2007-06-17 05:14:45 · answer #6 · answered by Mike C 6 · 1⤊ 0⤋