4 ms·
The cost of speed rises exponentially while the returns are linear. This is true even in subsonic flight, but above mach 1 the penalties are prohibitive. No g
by lujim 10y ago
The cost of speed rises exponentially while the returns are linear. This is true even in subsonic flight, but above mach 1 the penalties are prohibitive. No gas turbine, jet fuel powered aircraft will ever make this commercially viable without being subsidized.
- sokoloff 10y agoMost of the components of the cost are at most cubic with speed, not exponential. Fuel consumption is quadratic with speed and power required is cubic (roughly).