[Gravityloss]

How would planes would look like if fuel prices increased a few fold? I would assume probably less jets and more turbine aircraft, at least on short trips. Straight wings and slower speeds. Boeing and Airbus might lose some market share. Boeing never had a turboprop, Airbus owns 50% of ATR.

[Gibbon1]

> How would planes would look like if fuel prices increased a few fold?

Like High speed rail

[ericpauley]

> less jets and more turbine aircraft

Assuming you mean turbofan vs. turboprop here, since both of these are turbine-driven.

In either case, my understanding is that turboprops don't present a substantial gain in efficiency, as turbofans allow for higher and faster cruising altitude, which reduces drag on the airframe.