Turbine arrangement
First Claim
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1. A turbine arrangement for a gas turbine engine comprising:
- a turbine shaft;
an axial array of turbine rotors, the axial array having first and second axial ends defined by first and second turbine rotors respectively of the axial array of turbine rotors, each of the first and second turbine rotors in the axial array of turbine rotors being adjacent to at least one other turbine rotor to form one or more pairs of adjacent turbine rotors, wherein the one or more pairs of adjacent turbine rotors is between the first and second turbine rotors, and any given pair of the adjacent turbine rotors are coupled together to transmit drive therebetween;
a drive arm directly coupled to the turbine shaft and the axial array of turbine rotors at the first turbine rotor only; and
a measurement system arranged to measure a parameter indicative of rotational speed of the second axial end of the axial array of turbine rotors.
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Abstract
A turbine arrangement for a gas turbine engine comprising a turbine shaft. An axial array of turbine rotors, having a first axial end and a second axial end. A drive arm coupled between the turbine shaft and the first axial end. A measurement system arranged to measure a parameter of the turbine arrangement, the measurement system positioned at the second axial end. The parameter may be rotational speed.
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Citations
13 Claims
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1. A turbine arrangement for a gas turbine engine comprising:
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a turbine shaft; an axial array of turbine rotors, the axial array having first and second axial ends defined by first and second turbine rotors respectively of the axial array of turbine rotors, each of the first and second turbine rotors in the axial array of turbine rotors being adjacent to at least one other turbine rotor to form one or more pairs of adjacent turbine rotors, wherein the one or more pairs of adjacent turbine rotors is between the first and second turbine rotors, and any given pair of the adjacent turbine rotors are coupled together to transmit drive therebetween; a drive arm directly coupled to the turbine shaft and the axial array of turbine rotors at the first turbine rotor only; and a measurement system arranged to measure a parameter indicative of rotational speed of the second axial end of the axial array of turbine rotors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification