PPRuNe Forums - Jet fuel consumption

PPRuNe Forums (https://www.pprune.org/)

- Flying Instructors & Examiners (https://www.pprune.org/flying-instructors-examiners-17/)

- - Jet fuel consumption (https://www.pprune.org/flying-instructors-examiners/13697-jet-fuel-consumption.html)

Rojop

11th Sep 2001 08:53

Jet fuel consumption

A student asked me why jets burn less fuel at higher altitudes.

It is my understanding that a jet engine does not actually become a more fuel-economical machine at higher altitudes. Reduced parasite drag at high altitude means less engine thrust required, and therefore, less consumption.

Can anyone tell me if this is right?

All times are GMT. The time now is 14:32.