DARPA disk rotor hybrid helicopter

Picture 1

Kimmo Huosionmaa

When we are talking about the fundamental way to make airplanes, we must realize that the problem with making the aircraft is that there is no way to make perfect airplanes. All the models of airplanes are some kind of compromises, because there are not the models, what are suitable for every action, what the airplane might want to have.

If the airplane is fast, it will need another kind of motor, then slower airplanes. The answer to the problem is the VTOL (Vertical Take-Off and Landing) technology. This kind of technology is already used in the AV-8 Harrier II and F-36 VTOL-versions. But using the turbojets has the problem, that those motors are very noisy, and that’s why must create new kind of technologies, what can be used, to make the new era of the VTOL-airplanes.

The idea of this concept is actually very simple. Just put the helicopter rotor on the roof of the airplane. Another way is to put the blower in the body of the aircraft, but that decreases the capacity to carry cargo or fuel if those blowers are in the wings of the aircraft. If blowers are in wings, they might cover by hatches, what can be closed, when the jetplane will go flying at high speed.

The problem with connect the helicopter and jet airplane is that the rotor must not rotate too fast or it will be the crash, and the answer is to put the disk on it. In the DARPA concept the disk will increase, when the rotor is going to round faster, and when the aircraft will decrease the speed, and the rotating speed of the rotor is decreasing, will the disk become smaller, and it will give more power to the main rotor of this hybrid airplane.

That thing can fly same speed as an airplane, but when it must be land or float on some spot on earth, it won’t keep more voice than the normal helicopter. And in one idea of using the disk on the rotor of the helicopter, can be made new kind of the system: AWACS (Airborne Warning And Control) helicopter, what can use as the same missions than E-2 ”Hawkeye” or E-3 ”Sentry”. The system might be remote controlled by operators from the earth, and it might be so sophisticated than full-scale AWACS systems.

Image source:

https://www.youtube.com/watch?v=pg6LuwyNIxk

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