What is autorotation in a helicopter?
What is autorotation in a helicopter?
Autorotation. In a helicopter, an autorotative descent is a power-off maneuver in which the engine is disengaged from the main rotor disk and the rotor blades are driven solely by the upward flow of air through the rotor. [Figure 11-1] In other words, the engine is no longer supplying power to the main rotor.
Do all helicopters have autorotation?
All helicopters must have this capability in order to be certified. Autorotation is possible owing to a freewheeling unit, which allows the main rotor to continue turning even if the engine is not running. In normal powered flight, air is drawn into the main rotor system from above and exhausted downward.
How does autorotation help land a helicopter?
Autorotation helps a helicopter land when the engine fails because the air around the main rotor powers the rotor. Since the rotor is a propeller, as the air rushes past the blades, it pushes the blades, thus turning the rotor. This allows the rotor to create just enough lift for the helicopter to land safely.
What happens if a helicopter engine fails?
If the helicopter engine stops, everything will go quiet in the cockpit, and the machine will yaw violently to one side. When this happens, the pilot needs to instantly lower the collective, taking the pitch off the rotor blades, and initiating a descent.
What happens if a helicopter engine stops?
How does the Safari main rotor system work?
Those adjustments can be made the same way they were performed the first time. The Safari main rotor system has four basic adjustments: o Pitch Links – Adjust blade track and autorotation rotor speed. Lengthening a pitch link by one turn will lower the blade tip 2 inches. Lengthening both pitch links equally will increase autorotation RPM.
Why do I need to balance my Safari Helicopter?
Once balanced, you helicopter will not need continual attention. The most likely event will be changes in the tracking or lead/lag after transporting your helicopter on a trailer. Those adjustments can be made the same way they were performed the first time. The Safari main rotor system has four basic adjustments:
Which is the best Safari Helicopter to buy?
LET SAFARI HELICOPTER MAKE IT HAPPEN! Safari brings the quality of certified to the price point of experimental. The classic simplicity of the Safari 400 or the sleek lines of the new Safari 500? Whichever you choose, your new Safari will be powered by a real aircraft engine and the proven quality of the Safari drive train and controls.
Are You Ready to fly your custom personal helicopter?
ARE YOU READY TO FLY YOUR CUSTOM PERSONAL HELICOPTER? LET SAFARI HELICOPTER MAKE IT HAPPEN! Safari brings the quality of certified to the price point of experimental. The classic simplicity of the Safari 400 or the sleek lines of the new Safari 500?