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 Wines by wine experts such as Paul Gregutt to be "the classic expression of Yakima Valley fruit". Chinook's work with Cabernet franc, in particular, has garnered the statewide acclaim with the dry Cabernet franc "rosé" often described in wine reviews as a "Washington Chinon". The winery is named after the Chinook wind that blows through the Pacific Northwest rather than the Chinook salmon that is also common to the region. Chinook was founded in 1983 in the Yakima Valley by the wife-husband team of Kay Simon and Clay Mackey who met while both were working at Chateau Ste. Michelle with Simon