Definition of contra-rotating in English:

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contra-rotating

Pronunciation: /kɒntrərəʊˈteɪtɪŋ/

adjective

Rotating in the opposite direction or in opposite directions, especially about the same shaft.
Example sentences
  • The valves are actuated via drag arms from twin, contra-rotating camshafts.
  • However, most designs still had two or more contra-rotating blades to solve the torque problem and this caused highly complex and unsound craft.
  • Another benefit was that the contra-rotating propellers eliminated torque.
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