SECONDARY AIR SYSTEM WITH VENTURI

摘要

A gas turbine engine including a secondary air system with interconnected fluid passages defining at least one flow path between a common source of pressurized air and a common outlet. Some of the fluid passages deliver the pressurized air to components of the gas turbine engine. The fluid passages include a common fluid passage through which all circulation of the pressurized air to the common outlet passes. The common fluid passage has a section including a venturi configured for controlling a flow of the pressurized air from the source to the outlet. In one embodiment, the venturi is provided in a common inlet or common outlet passage. A method of pressurizing a secondary air system is also discussed.

主权项

1. A gas turbine engine comprising:
a compressor providing a source of pressurized air; a secondary air system including a plurality of interconnected fluid passages defining at least one flow path between the source of pressurized air and a common outlet communicating with an environment of the gas turbine engine, some of the plurality of fluid passages communicating with components of the gas turbine engine for delivery of the pressurized air thereto, the plurality of fluid passages includes a common fluid passage through which all circulation of the pressurized air to the common outlet passes, the common fluid passage including a venturi configured for controlling a flow of the pressurized air from the source of pressurized air to the common outlet through the plurality of fluid passages.