Mach
15
6.9
- noun
- /mɑk/
- Specialized
- The aircraft broke the sound barrier by reaching a speed of Mach two during its test flight.
- Mach number
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Watch on YouTubeWe could barely break Mach One, right.
- We could barely break Mach One, right.
- Problem is, the stagnation temperature increases quickly with the Mach number.
- So basically they can launch from space or from the land, something that can maneuver at Mach speeds in the area where there's almost no air.
- So the wing aspect ratio, the altitude, Mach number, wing sweep, those are those are basically required by more than one subsystem.
- But for Quarter Horse, this really is the story is how do we design our aircraft to be as efficient as possible across this Mach altitude range.
Examples
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Now we're flying faster than Mach One, faster than sound.
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So moving at Mach one through a medium means you're moving at the speed of sound in that medium.
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Sir, it just shot straight up at over mach ten... and stopped 20 miles up.
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Reduce speed to mach one.
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We could barely break Mach One, right.
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But what we did is we flew the vehicle through different Mach numbers, OK.
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Let's crank it up to mach 5.
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If you set that too small, the plumes will change greatly with Mach number, sometimes in an unpredictable fashion.
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He also broke the speed of sound, hitting an incredible Mach 1.24 or 1,342 km/h (833.9 miles per hour) in his dizzying descent.
Blog text (15) -
It is well known that Mach speed decreases as altitude increases, and it's highly significant for aircraft (hence the term 'coffin corner' for the altitude where the stalling speed and limiting Mach number of a particular aircraft creep inexorably together).
Blog text (2)
Synonyms
1
7.7
How fast something moves compared with the speed of sound around it
Compounds
How Fast
- Specialized
1
7.5
15
6.7
- Specialized
15
6.9
- Specialized
1
9.6
- Specialized
3
6.4
Surface Forms
Etymology
Mach for speed is named after Ernst Mach, and it measures how fast something goes compared with the speed of sound, so 'Mach 2' means 'twice the speed of sound'.