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 2014 that Chinook Sciences had been honoured in the 20th Annual Environment and Energy Awards. Chinook won as the most innovative company in the Energy from Waste Category for its patented End Stage Recycling® Technology with Renewable Energy generation. Chinook Sciences was named winner of the Queen’s Award for Enterprise in Innovation on the 21st of April 2014. Published on that date to mark the Queen's birthday. Chinook Sciences won for their development of thermal heat treatment plants for recovering recycled metal and generating renewable energy from waste. On May 23, 2014 Chinook Sciences announced that it had secured a