Acceleration control in multi spool gas turbine engine
AssigneeROLLS-ROYCE plc
InventorArthur L. Rowe
Life of this patent
Estimating the term…
Abstract
A gas turbine engine system comprises a first compression stage; a second compression stage; a combustor; a controller; a first sensor for sensing the speed of the first compression stage and providing a first indication of the sensed speed to the controller; and a second sensor for sensing the speed of the second compression stage and providing a second indication of the sensed speed to the controller, wherein the controller is operable to control the supply of fuel to the combustor in dependence upon the first indication received from the first sensor and the second indication received from the second sensor. This arrangement is particularly useful in controlling the acceleration of an aero-engine from minimum idle.
Claims20
A gas turbine engine system comprising:
- a first compression stage;
- a second compression stage;
- a combustor;
- a controller;
- a first sensor for sensing the speed of the first compression stage and providing a first indication of the sensed speed to the controller;
- and
- a second sensor for sensing the speed of the second compression stage and providing a second indication of the sensed speed to the controller,
- wherein the controller is operable to control the supply of fuel to the combustor in dependence upon the first indication received from the first sensor and the second indication received from the second sensor,
- wherein the controller is operable to create a composite parameter from the received first and second indications, and
- wherein the composite parameter is created from the combination of the first indication and the second indication in different proportions.
A gas turbine engine system comprising:
- a first compression stage;
- a second compression stage;
- a combustor;
- a controller;
- a first sensor for sensing the speed of the first compression stage and providing a first indication of the sensed speed to the controller;
- and
- a second sensor for sensing the speed of the second compression stage and providing a second indication of the sensed speed to the controller,
- wherein the controller is operable to control the supply of fuel to the combustor in dependence upon the first indication received from the first sensor and the second indication received from the second sensor,
- wherein the controller is operable to determine a target value and a current value using the first and second indications and to compare the target value and the current value, and
- wherein the control of the fuel supply to the combustor is dependent upon the comparison.
A multi-spool gas turbine engine system comprising:
- a first spool;
- a second spool;
- a combustor;
- a controller;
- a first sensor for sensing the speed of the first spool and providing a first indication of the sensed speed to the controller;
- and
- a second sensor for sensing the speed of the second spool and providing a second indication of the sensed speed to the controller,
- wherein the controller is operable to control the supply of fuel to the combustor in dependence upon the first indication received from the first sensor and the second indication received from the second sensor,
- wherein the controller is operable to create a composite parameter from the received first and second indications, and
- wherein the composite parameter is created from the combination of the first indication and the second indication in different proportions.
An acceleration controller for a gas turbine engine comprising:
- a first input for receiving an indication of the speed of a first compression stage;
- a second input for receiving an indication of the speed of a second compression stage;
- and
- processing means operable to control the supply of fuel to the engine in dependence upon the indications received at the first and second inputs, and operable to determine a target value and a current value using the indication received at the first input and the indication received at the second input and to compare the target value and the current value, wherein the control of the fuel supply to the combustor is dependent upon the comparison.
Dependencies are inferred from the claim text.