There are special helicopters called compound helicopters. Some of these helicopters have wings. Some of these helicopters have wings and powerful engines. Some compound helicopters have been built, but only for flight tests. This High Speed Rotor has not been built yet. It will be a compound helicopter that can fly very fast. NASA will study this kind of rotorcraft. NASA will make sure that it is a good helicopter for carrying passengers and cargo.
More about this rotorcraft
· The High Speed Rotor can carry about 80 passengers.
· It can fly as far as 925 kilometers (575 miles).
· This rotorcraft can fly 668 kilometers per hour (415 miles per hour).
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