What does contrarotating mean?

Definitions for contrarotating
con·traro·tat·ing

This dictionary definitions page includes all the possible meanings, example usage and translations of the word contrarotating.


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Wiktionary

  1. contrarotatingadjective

    Rotating in two directions by contrarotation.

Wikipedia

  1. contrarotating

    Contra-rotating, also referred to as coaxial contra-rotating, is a technique whereby parts of a mechanism rotate in opposite directions about a common axis, usually to minimise the effect of torque. Examples include some aircraft propellers, resulting in the maximum power of a single piston or turboprop engine to drive two propellers in opposite rotation. Contra-rotating propellers are also common in some marine transmission systems, in particular for large speed boats with planing hulls. Two propellers are arranged one behind the other, and power is transferred from the engine via planetary gear transmission. The configuration can also be used in helicopter designs termed coaxial rotors, where similar issues and principles of torque apply. Contra-rotating propellers should not be confused with counter-rotating propellers, a term which describes non-coaxial propellers on separate shafts; one turning clockwise and the other counter-clockwise. Tandem-rotor helicopters such as the CH-47 Chinook also use a counter-rotating arrangement. The efficiency of a contra-rotating propeller is somewhat offset by its mechanical complexity. Nonetheless, coaxial contra-rotating propellers and rotors are moderately common in military aircraft and naval applications, such as torpedoes, where the added maintenance cost is not a primary concern.

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Numerology

  1. Chaldean Numerology

    The numerical value of contrarotating in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of contrarotating in Pythagorean Numerology is: 4

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"contrarotating." Definitions.net. STANDS4 LLC, 2024. Web. 29 Mar. 2024. <https://www.definitions.net/definition/contrarotating>.

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