PPRuNe Forums - Mach number decrease with fuel burn

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Driver 170

17th December 2022 12:25

Mach number decrease with fuel burn

Hi,

I’m curious about how this table is read. If we set a CI 10 for example and using ECON cruise speed. With fuel burn and decreasing weight, would our mach number slowly decrease?

https://cimg1.ibsrv.net/gimg/pprune....3e99f6433.jpeg

42go	17th December 2022 14:36

Below about 140k, yes.

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