Counter-rotating propellers
From Wikipedia, the free encyclopedia
Counter-rotating propellers, are found on twin-engine, propeller-driven aircraft and have propellers that spin in opposite directions.
Generally, most conventional twin engines spin clockwise on the left and right engine (as viewed from the pilot seat). Counter-rotating propellers generally spin clockwise on the left engine, and counter-clockwise on the right. The advantage of counter-rotating propellers is to balance out the effects of torque and p-factor, eliminating the problem of the critical engine.
Counter-rotating propellers should not be confused with Contra-rotating propellers.
Some common aircraft with counter-rotating propellers include:
- Piper PA-31 Navajo
- Piper PA-34 Seneca
- Piper PA-39 Twin Comanche
- Piper PA-40 Arapaho
- Piper PA-44 Seminole
- Cessna T303 Crusader
- Beech BE-76 Duchess
- Lockheed P-38 Lightning
- The Wright Flyer
