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US 2022/0128013 A1Published application
Takeoff power boost
AssigneeTextron Innovations Inc.
InventorsWilliam Gons, Brett Partington
Life of this patent
Estimating the term…
Abstract
Embodiments are directed to boosting aircraft engine performance for takeoff and critical mission segments by reducing airflow used for cooling exhaust gases. The airflow is reduced by stopping an accessory blower or by closing an external air vent Eliminating the cooling airflow to the exhaust has the effect of lowering the backpressure on the engine, which thereby increases maximum engine power.
Claims18
A system for managing airflow in an engine exhaust, comprising:
- a turbine section of an engine configured to create a primary exhaust airflow during operation;
- an exhaust section coupled to the turbine section and configured to pass the primary exhaust airflow;
- a mixing section in the exhaust section, the mixing section configured to receive airflow from an external source and to mix the external airflow with the primary exhaust airflow;
- a door configured to selectively provide the external airflow to the mixing section;
- and
- a flight control computer configured to selectively open the door in response to determining accessory cooling is needed without regard to maximum engine power requirements and configured to selectively close the door in response to determining maximum engine power is required.
3 more elements
A system for managing airflow in an engine exhaust, comprising:
- a turbine section of an engine configured to create a primary exhaust airflow during operation;
- an exhaust section coupled to the turbine section and configured to pass the primary exhaust airflow;
- a mixing section in the exhaust section, the mixing section configured to receive additional airflow from an external vent system and to mix the external vent system airflow with the primary exhaust airflow;
- and
- an external access configured to selectively provide the external vent system airflow to the mixing section.
2 more elements
A flight control computer, comprising:
- a processor;
- a memory having stored thereon computer-executable instructions that, when executed by the processor, cause the processor to perform a method for managing airflow to an engine, the processor operating to:
- identify a current aircraft flight condition based upon aircraft operating parameters;
- and
- if the current aircraft flight condition requires maximum engine power, then stopping a flow of cooling air from mixing with primary exhaust airflow of an engine.
2 more elements
Dependencies are inferred from the claim text.