Australia develops most environmentally friendly Helicopter
Australia is making a new history in aviation by developing affordable environmentally friendly helicopters. As we know it Helicopters are handy little vehicles, they can hover and they can land in difficult to reach places and in congested areas. However there are a lot of disadvantages with current helicopter design. They are noisy, and they are enormous gas guzzlers (a Bell 206 L4 helicopter travels just 1.47 km per litre - a family car travels 10-13kms per litre.) When their tail rotors fail the chopper goes out of control usually resulting in a crash landing. They're complex to control, extensive training is required. It is easier to learn to fly an aeroplane than a helicopter. Helicopters vibrate. An unadjusted helicopter can easily vibrate so much that it will shake itself apart. Coaxial rotor helicopters can solve a lot of these problems but up till now they've been so expensive and technical that only the military has been able to afford them. Coaxial rotors are a pair...