Why are aircraft engines sooo thirsty?
I've been pondering...
Ignoring the distance per pence calculation, why are piston engines so thirsty? My (not so economical) car engine uses 6 litres per hour. But a typical PA28 can use some 40 litres per hour.
Even if the magnetos are sparking twice as much fuel(?) that should still only equate to 12 litres per hour.
Why are SEP engines so uneconomical?