Anonymous ID: 9fb7ef April 29, 2018, 6:43 p.m. No.1241543   🗄️.is 🔗kun   >>1558

>>1241456

Nothing to do with FE.

It has to do with combustion.

The engine needs oxygen to provide sufficient thrust.

Yes, the higher you fly, the less resistance, but it also means less efficient the fuel burn.