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US 11,248,552 B2Granted
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.
Claims4
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 an accessory component airflow from an engine accessory component and to mix the accessory component airflow with the primary exhaust airflow;
- a blower configured to selectively provide the accessory component airflow to the mixing section;
- and
- a flight control computer configured to selectively turn the blower on in a response to determining accessory cooling is needed without regard to maximum engine power requirements and configured to selectively turn the blower off in response to determining maximum engine power is required.
3 more elements
Dependencies are inferred from the claim text.