Patent ID: 9500137
Filing Date: 2016-11-22
CPC Classification: F02C,F05D

Claim Text:
1. A regulation control unit for optimizing regulation of a free-turbine power unit of an aircraft provided with a low-pressure (LP) body which supplies power to equipment and which is linked to a high-pressure (HP) body, wherein the control unit is configured to vary an LP body speed in accordance with a maximal value of minimal speeds of the equipment and with a positive or zero incrementation to obtain a minimal HP body speed so that the power supplied by the equipment remains constant, wherein a LP body speed governor, a HP body speed governor, and a fuel-flow regulator are combined, wherein the LP body speed governor includes: a comparison tool for elaborating a LP body speed set-point from measurements transmitted by means for measuring amounts of power supplied and minimal rotational speeds corresponding to amounts of power required by each equipment driven by the power unit from power variation data according to the speed for each equipment; and a subtracter measuring a difference between the elaborated set-point and the LP body speed, the difference being transmitted to a first converter which converts the difference into a HP body speed difference to be transmitted to the HP body speed governor, and wherein the HP regulator includes means for elaborating a HP body speed set-point from the first converter, and the HP speed set-point going through a limiting filter which redefines set-point values within permissible ranges, the redefined set-point being then transmitted to the fuel-flow regulator in a form of a flow regulator set-point via a second converter.