Originally Posted by Dave Jackson
At 7 hp / knot / occupant it's going to take a hell of a lot of wood to keep the X2's fire burning.
Dave, you are fogetting that this applies to fixed wing too. As the machine design cruise speed gets faster the drag remains the same because the wings are optimised for the higher speed (wingspan generally). The engine power required is proportional to speed, but flight time is proportionately reduced. Net effect is same fuel consumption for a given payload. This is why pistons gave way to turbines.
Originally Posted by UberFliegeJunge
Let's hope Sikorsky can capaitalize on what this X2 program accomplished and keep moving rotor wing aviation even further forward into the future!
Absolutely agreed.
Mart