Aeronave que incorpora un sistema de arranque de los motores principales

The present invention refers to a system for controlling aircraft main engines cooling during starting operations. An aircraft incorporates a main engine and a pneumatic starter for starting the same, and a pneumatic source fluidly communicated with the pneumatic starter to supply pressurized air th...

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Bibliographic Details
Main Authors MARTINEZ VILLACORTA, Samuel, CHIABRANDO, Marcos Javier, CARRO SANCHEZ, Miguel Angel, FERNANDEZ-LOPEZ, Pío, MARTINEZ SANCHO, Alberto
Format Patent
LanguageSpanish
Published 02.02.2022
Subjects
AIR INTAKES FOR JET-PROPULSION PLANTS
BLASTING
COMBUSTION ENGINES
CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
GAS-TURBINE PLANTS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:The present invention refers to a system for controlling aircraft main engines cooling during starting operations. An aircraft incorporates a main engine and a pneumatic starter for starting the same, and a pneumatic source fluidly communicated with the pneumatic starter to supply pressurized air thereto. According to the invention, a control system is provided with a data chart containing predetermined pressure values of the pneumatic source, and said values corresponds to an ambient condition to obtain a desired rotating speed for the main engine for that ambient condition. The control system is adapted for controlling the pneumatic source air pressure output based on said data chart, to rotate the main engine within a predefined rotating speed range during cooling procedure. The invention provides a controlled reduced rotating speed during main engines cooling or cranking operation before starting main engines, in order to mitigate bowed rotor phenomenon.
Bibliography:Application Number: ES20160382541T