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Beta Range

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Revision as of 20:37, 29 March 2014 by Editor2 (talk | contribs) (Description)
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Category: General General
Content source: SKYbrary About SKYbrary


Beta Range - in a turboprop engine, is the range of power lever positions between flight idle and maximum reverse.


The beta range is used for ground operations inclusive of slowing the aircraft after landing. Below flight idle, the power levers control the blade pitch directly. At the power lever ground idle position, blade pitch is such that the propeller produces its minimum level of thrust. By moving the power levers from the ground idle position towards maximum reverse, the propeller blades go into reverse pitch which directs the airflow from the propeller forward. This will assist in reducing the aircraft speed during the landing roll and also allow for intentionally moving the aircraft backwards.

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