We all know that we can't convert directly beetwen one another. But unwritten rule is that 1 lb of thrust equals 2 HP
. But there is a big difference when you compare A340 and An-22. They have almost same MTOW 250.000 kg (An-22 has less speed), but the A340-200 has 4 30000 lb thrust engines. AN
-22 has 4 15000 HP
engines. So the A340-200 would have around 240000 HP
versus only 60000HP for An-22 at very similar performance. So why the big difference?