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 Jargon names throughout this region bear Jargon names (see List of Chinook Jargon placenames) and words are preserved in various rural industries such as logging and fishing. The Chinook Jargon was multicultural and functional. To those familiar with it, Chinook Jargon is often considered a wonderful cultural inheritance. For this reason, and because Jargon has not quite died, enthusiasts actively promote the revival of the language in everyday western speech. The Confederated Tribes of the Grand Ronde Community of Oregon is taking steps to preserve Chinook Jargon use through a full immersion head start/preschool which is conducted in Chinuk Wawa, in