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Pilot indicator for predicting changes in the speed of rotation of the main rotor of a rotorcraft

  • US 20060030975A1
  • Filed: 06/08/2005
  • Published: 02/09/2006
  • Est. Priority Date: 06/15/2004
  • Status: Active Grant
First Claim
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1. A pilot indicator (13) for a rotorcraft provided with a main rotor and at least one gas turbine engine for propulsion or even for lift, the indicator comprising first and second sensors (14, 15) delivering information relating respectively to a first speed of rotation Nr corresponding to the main rotor and a second speed of rotation NTL corresponding to the free turbine of said engine, the indicator further comprising processor means (17) for processing the information from said first and second sensors (14, 15) and display means (18) provided with a display screen (19) for displaying the first and second present values respectively of the first and second speeds of rotation Nr and NTL, wherein said processor means (17) determines an estimated value for the first speed of rotation Nr.

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