| Some years ago a news photographer was involved in a Bell 47G helicopter crash,the tail rotor gearbox failed and the helicopter started to spiral violently,he kept the camera running and the effects caught on film were terrifying,this was the first time that anyone had managed to film something like this from inside the helicopter.
I am surprised that more use has not been made of the counter-rotating or intermeshing rotor principles in the West,these forms of drive totally eliminate any form of tail rotor,take a look at the Kaman helicopters and some of the Soviet ones as well,fine so engines will always fail,but at least while they are running the torque is effectively eliminated.
Anyone who flies model helicopters will understand the principles applied,and above all know exactly what happens when that small set of rotors at the back fails !
__________________ 'And there I was oil on my goggles from a broken pipe,then I looked at the altimeter,all I could see was the makers name !' www.wonwinglo.scale-models.net/ |