Helicopters have a maximum safe speed called VNE (Velocity Never Exceed) because as they move forward, the advancing rotor blade gains airspeed while the retreating blade loses airspeed; at high speeds, the retreating blade can stall and lose lift, causing the helicopter to roll violently toward the retreating side, which is unrecoverable at low altitudes.
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What happens if a helicopter flies too fast? 🚁 #physics #aviation #scaryAdded:
Have you ever wondered why helicopters can't fly as fast as airplanes? That is because Every helicopter has a number on its airspeed indicator, VNE, velocity never exceed. Most pilots know the number, few understand why. As the helicopter moves forward, the advancing blade gains airspeed, >> [music] >> it's rushing towards the air. The retreating blade loses airspeed, it's moving away from the air. At high forward speed, [music] the retreating blade stalls so severely it can no longer generate lift. It stalls.
Half of your rotor disc stops working.
The helicopter rolls violently towards the retreating side. At low altitude, it is unrecoverable. Subscribe High Altitude Pilot and see the full breakdown.
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