Back ملخهای متقاطع-دوار Persian Hélice contrarotative French Elica controrotante Italian 2重反転プロペラ Japanese Contraroterende schroef Dutch Śmigła przeciwbieżne Polish Kontrarotirajoča propelerja Slovenian Kontraroterande propeller Swedish 同轴反转螺旋桨 Chinese
Aircraft equipped with contra-rotating propellers (CRP)[1] coaxial contra-rotating propellers, or high-speed propellers, apply the maximum power of usually a single piston engine or turboprop engine to drive a pair of coaxial propellers in contra-rotation. Two propellers are arranged one behind the other, and power is transferred from the engine via a planetary gear or spur gear transmission. Contra-rotating propellers are also known as counter-rotating propellers,[2][3] although the term counter-rotating propellers is much more widely used when referring to airscrews on separate non-coaxial shafts turning in opposite directions.
- ^ Sasaki, N.; Murakami, M.; Nozawa, K.; Soejima, S.; Shiraki, A.; Aono, T.; Fujimoto, T.; Funeno, I.; Ishii, N.; Onogi, H. (1998). "Design system for optimum contra-rotating propellers". Journal of Marine Science and Technology. 3 (1): 3–21. doi:10.1007/bf01239802. S2CID 110551942.
- ^ J. M. R. (March 2, 1956). "Enterprise in airscrews: First details of a mighty new de Havilland airscrew and the story of 21 years of achievement". Flight. Vol. 69, no. 2458. pp. 237–248. ISSN 0015-3710.
- ^ Strack, W. C.; Knip, G.; Weisbrich, A. L.; Godston, J.; Bradley, E. (October 25–28, 1982). Technology and benefits of aircraft counter rotation propellers. Aerospace Congress and Exposition. Anaheim, California, USA: NASA. alternate url
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