Modular Ducted Propulsor Fan Liner for Seal Access
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Solution Overview
Problem
Ducted propulsor fan systems require extensive disassembly for maintenance of internal components like the fan seal, which is time-consuming and inefficient.
Innovation Solution
A modular duct system with removable front inlet liners and acoustic liners that allow easy access to fan components, including the fan seal, enabling quick replacement and customization of liners and duct geometries for improved performance and acoustics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If conventional ducted propulsor fan design is used, then structural integrity is maintained, but maintenance of internal components requires extensive disassembly and is time-consuming
Solution Approach 1:
The duct is divided into multiple modular sections (forward duct portion, aft duct portion) that can be independently removed. The forward duct portion is configured as a removable module that can be detached from the aft duct portion to provide access to internal components like the fan seal, eliminating the need to disassemble the entire duct structure for maintenance.
2Object-generated harmful factors
If fixed duct geometry is used, then manufacturing simplicity is maintained, but acoustic performance and efficiency cannot be optimized
Solution Approach 1:
The duct system is designed with replaceable forward duct portions that allow the geometry to be changed or optimized based on specific acoustic and performance requirements. Different forward duct portions with varying geometries can be substituted to tailor acoustic treatment and improve efficiency without redesigning the entire duct structure.
Data Source
AI summary
Aspects of the disclosure relate to a ducted propulsor fan having a modular duct. The modular duct may include a front inlet liner that can be easily removed from the ducted propulsor fan. The removable front inlet liner may allow for servicing of a fan seal included in the ducted propulsor fan. The ducted propulsor fan may be configured to be compatible with different front inlet liners that each have different acoustic properties.