Booster compressor with speed change system
AssigneeUnited Technologies Corporation
InventorsStephen H. Taylor, Charles E. Lents, Gabriel L. Suciu, Brian D. Merry, Jesse M. Chandler
Life of this patent
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Abstract
A gas turbine engine includes a main engine compressor section. A booster compressor changing a pressure of airflow received from the main engine compressor section to a pressure desired for a pneumatic system. The booster compressor operates at airflow conditions greater than a demand by the pneumatic system. A speed change system driving the booster compressor at speeds corresponding to a demand of the pneumatic system. A bleed air system for a gas turbine engine and a method of controlling engine bleed airflow are also disclosed.
Claims18
A gas turbine engine comprising;
- a main engine compressor section;
- a booster compressor for changing a pressure of airflow received from the main engine compressor section to a pressure desired for a pneumatic system, wherein the booster compressor operates at airflow conditions greater than a demand by the pneumatic system;
- and
- a speed change system for driving the booster compressor at speeds corresponding to a demand of the pneumatic system.
A bleed air system for a gas turbine engine, the bleed air system comprising:
- a booster compressor for changing a pressure of airflow received from a main engine compressor section to a pressure desired for a pneumatic system, wherein the booster compressor operates at airflow conditions greater than a demand by the pneumatic system;
- and
- a speed change system for driving the booster compressor at speeds corresponding to a demand of the pneumatic system.
A method of controlling engine bleed airflow comprising:
- configuring a booster compressor to receive engine bleed air from a main compressor section of gas turbine engine;
- compressing the engine bleed air from the main compressor with the booster compressor and supplying the compressed engine bleed to a pneumatic system according to a demand of the pneumatic system;
- driving the booster compressor with a speed change system at a speed corresponding to the demand of the pneumatic system;
- and
- exhausting airflow in excess of the demand through with an exhaust valve such that the booster compressor operates at airflows exceeding the demand of the pneumatic system.
Dependencies are inferred from the claim text.