Helicopter rotor of gravity fore-aft. However, it requires the expense of two large rotors rather than the more common one large main rotor and a much smaller tail rotor. The Boeing CH-47 Chinook is the most common tandem rotor helicopter. Coaxial rotors are a pair of rotors mounted one above the other on the same shaft and turning in opposite directions. The advantage of the coaxial rotor is that, in forward flight, the lift provided by the advancing halves of each rotor compensates for the retreating half of the other, eliminating one of the key effects of dissymmetry of lift: retreating blade
Chinook Sciences 300 million pound deal in principle ( subject to acceptable EPC) with the environmental and waste management company Bee'ah to build a thermal energy-from-waste facility in Sharjah, UAE. If the project proceeds, the deal is expected to create around 200 British jobs and secure another 650. On November 18, 2015, Chinook Sciences was honoured to win the Power/Energy category at the Institute of Engineering and Technology Awards in London. Chinook Sciences Chinook Sciences is a US and UK based technology company that specializes in waste to energy and metal recovery. Chinook Sciences holds many patents for its non-incineration "ultra clean