Patent ID: 9303566
Filing Date: 2016-04-05
CPC Classification: F02C,F05D

Claim Text:
1. A method for optimizing regulation of a free-turbine (TL) power unit of an aircraft provided with a low-pressure (LP) body which supplies power to an equipment and which is linked to a high-pressure (HP) body, the method comprising: determining a maximal value of minimal speed of the equipment; and setting an LP body speed set-point based on a sum of the maximal value of minimal speed and an increment to obtain a minimal HP body speed so that power supplied by the equipment remains constant, wherein the increment is introduced conditionally until the minimal HP body speed is obtained, and wherein the increment is determined by calculating a difference between a measured HP body speed at a time moment and a measured HP body speed at a previous time moment, measuring a power on the LP body in a time interval between the time moment and the previous time moment, setting the increment to a positive value if the difference of the measured HP body speeds is negative and the measured power on the LP body is constant during the time interval, and setting the increment to zero if the measured power on the LP body is not constant during the time interval.