Annular Slide Valve for Gas Turbine Augmentor
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Solution Overview
Problem
Existing gas turbine engine valve assemblies driven by hydraulic actuators are complex, adding weight and cost, which reduces fuel efficiency.
Innovation Solution
An annular slide valve assembly coupled to a gas turbine engine's separation liner and diffuser, with a control valve to regulate fan bypass air flow to the augmentor, replacing hydraulic actuators with a pneumatic system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If hydraulic actuators are used to drive crank-arms in valve assemblies, then precise control of fan bypass air flow is achieved, but device complexity increases and weight increases
Solution Approach 1:
The patent removes the hydraulic actuator and crank-arm mechanism from the valve assembly, extracting the complex mechanical components while retaining the essential flow control function through a simpler annular slide valve design
Solution Approach 2:
The patent replaces the mechanical hydraulic actuator-crank-arm system with a pneumatic control system that directly actuates the annular slide valve, eliminating complex mechanical linkages while maintaining control precision
2Measurement precision
If hydraulic actuators are used to drive crank-arms in valve assemblies, then precise control of fan bypass air flow is achieved, but weight increases
Solution Approach 1:
The patent removes the heavy hydraulic actuator and crank-arm mechanism from the valve assembly, extracting these weight-intensive components while retaining the essential flow control function
Solution Approach 2:
The patent replaces the mechanical hydraulic actuator-crank-arm system with a lighter pneumatic control system that directly actuates the annular slide valve, eliminating heavy mechanical linkages
3Reliability
If hydraulic actuators are used in valve assemblies, then reliable flow regulation is achieved, but manufacturing cost increases
Solution Approach 1:
The patent removes the hydraulic actuator and crank-arm mechanism from the valve assembly, extracting these expensive components while retaining the essential flow control function
Solution Approach 2:
The patent replaces the expensive mechanical hydraulic actuator-crank-arm system with a more cost-effective pneumatic control system that directly actuates the annular slide valve
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The annular slide valve assembly simplifies design, reduces weight and cost, and improves fuel efficiency by allowing precise control of fan bypass air flow, enhancing aircraft performance.
Implementation Method 1
a control valve coupled to the annular slide valve, the control valve configured to channel compressed air to the annular slide valve to facilitate regulating the quantity of fan bypass air channeled to the gas turbine engine augmentor
Data Source
AI summary
A method for channeling compressed air to a gas turbine engine augmentor is provided. The method includes coupling an annular slide valve to a gas turbine engine separation liner, coupling a valve seat to a gas turbine engine diffuser such that an airflow passage is defined between the annular slide valve and the valve seat, and channeling compressed air to the annular slide valve to facilitate regulating the quantity of fan bypass air channeled to the gas turbine engine augmentor.