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Speed control during motoring of a gas turbine engine

  • US 10,221,774 B2
  • Filed: 07/21/2016
  • Issued: 03/05/2019
  • Est. Priority Date: 07/21/2016
  • Status: Active Grant
First Claim
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1. A system for speed control during motoring of a first gas turbine engine of an aircraft comprising at least two gas turbine engines, the system comprising:

  • an air turbine starter;

    a starter air valve operable to deliver compressed air to the air turbine starter; and

    a controller operable to adjust the starter air valve to control motoring of the first gas turbine engine based on measured feedback with lead compensation providing a phase lead with a positive phase angle frequency response to reject disturbances attributable to dual to single or single to dual engine starting transitions between the at least two gas turbine engines.

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