Air pressurisation system
AssigneeROLLS-ROYCE plc
InventorChristopher A. Murray
Life of this patent
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Abstract
There is provided an air pressurisation system for an aircraft, the air pressurisation system comprising: a transmission for driving a rotor of a blower compressor for the air pressurisation system, wherein the transmission comprises: a first input configured to receive drive from a spool of a gas turbine engine; a second input; and an output configured to drive to the rotor of the blower compressor, wherein a speed of the output is determined by a function of speeds of the first and second inputs; and a brake coupled to the second input, wherein the brake is operable to engage and brake the transmission at the second input, in order to fix a transmission ratio of the transmission between the first input and the output.
Claims16
An air pressurisation system for an aircraft, the air pressurisation system comprising:
- a transmission for driving a rotor of a blower compressor for the air pressurisation system, wherein the transmission comprises:
- a first input configured to receive drive from a spool of a gas turbine engine;
- a second input;
- and
- an output configured to drive the rotor of the blower compressor, wherein a speed of the output is determined by a function of speeds of the first and second inputs;
- and
- a brake coupled to the second input, wherein the brake is operable to engage and brake the transmission at the second input, in order to fix a transmission ratio of the transmission between the first input and the output.
Dependencies are inferred from the claim text.