flamming_python wrote:GarryB wrote:Wow... that is a huge speed increase with just new rotor blades... with the huge advantage that it is relatively easy to apply to the entire fleet of helicopters and should allow a performance boost across the entire fleet...
It's a little misleading I think
As those blades were tested on the flying lab Mi-24 (based on the Mi-24K), which is single-seat and has no wings. They managed to get that thing up to 400 km/h. I believe the plans call for getting it up to 440-450 km/h with subsequent modifications.
But still just the blades will provide a speed boost to serial Mi-24 and Mi-28 machines too; even +20-30 km/h would be good
Yes, these blades are a direct result from the testbed Mi-24K, but it has stubbed wings (lifting wings) which generates ~25% lift.
You can see this blades on the Mi-24K high speed helicopter testbed.