Fluid Damper Volume Compensator Centrifugal Pumping
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Solution Overview
Problem
Rotary wing systems with rotating blades experience troublesome motion during operation, which existing technologies fail to effectively control due to limitations in damping mechanisms.
Innovation Solution
A fluid damper system with a volume compensator channel, utilizing a centrifugal force mass member that moves along a volume compensating length to push damper fluid into working chambers, thereby controlling the troublesome motion of rotating blades by applying pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fluid damper system is used to control troublesome motion in rotary wing systems, then the stability and control of rotating blades is improved, but the system complexity increases due to the need for volume compensators and centrifugal force mass members
Solution Approach 1:
The patent combines the volume compensator and centrifugal force mass member into a single integrated assembly that serves both volume compensation and fluid pressurization functions. This merging reduces the number of separate components needed while achieving the desired stability enhancement through the combined action of the compensator channel and centrifugal mass.
Solution Approach 2:
The centrifugal force mass member serves multiple functions: it acts as both a volume compensator (adjusting fluid volume changes) and a pump (pressurizing damper fluid into working chambers). This multi-functionality reduces system complexity by eliminating the need for separate volume compensation and pressurization mechanisms.
2Reliability
If a volume compensator with centrifugal force mass member is added to pressurize damper fluid, then the damping effectiveness is improved, but the weight of the damper assembly increases
Solution Approach 1:
The patent uses hydraulic principles by utilizing the centrifugal force mass member to pressurize damper fluid through rotational motion. The centrifugal force generated during rotation automatically pressurizes the fluid without requiring additional mechanical pumps or heavy pressurization systems, achieving effective damping while minimizing weight increase.
Solution Approach 2:
The volume compensator and centrifugal mass member are designed to function dynamically during rotation rather than being static components. The centrifugal force is generated only when the system is rotating, providing pressurization exactly when needed for damping effectiveness while keeping the added weight minimal during non-operational states.
3Power
If the centrifugal force mass member is made larger to increase pressurization capability, then the fluid pressurization efficiency is improved, but the device complexity and space requirements increase
Solution Approach 1:
The patent optimizes the parameters of the centrifugal force mass member (such as its radius, mass, and position) to achieve the required pressurization capability within compact dimensions. By carefully selecting and adjusting these parameters, the system achieves effective fluid pressurization without requiring an oversized or overly complex mass member design.
Solution Approach 2:
The centrifugal force mass member utilizes the rotational dimension to generate pressurization capability. Rather than increasing size linearly, the system exploits the rotational motion to amplify the effect of a relatively small mass, achieving high pressurization capability without proportionally increasing the physical dimensions or complexity of the component.
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 solution effectively dampens the motion of rotating blades by using centrifugal force to pressurize the damper fluid, enhancing control and stability of the rotary wing system.
Implementation Method 1
a rotation about the rotation axis forces the centrifugal force mass member towards an outboard end of the volume compensating channel and pushes damper fluid from the volume compensator channel towards the at least first working chamber
Data Source
AI summary
Rotary wing system with a rotating blade rotating about a rotation axis. The system includes a fluid damper with a damper fluid for controlling a troublesome motion. The fluid damper has an inboard end and an outboard end, the damper inboard end attached to a first rotary wing system inboard member proximate the rotation axis and the outboard end attached to a second rotary wing system outboard member distal from the rotation axis. The fluid damper contains a damper fluid volume in at least a first working chamber which is worked by a relative motion between said first rotary wing system inboard member and said second rotary wing system outboard member to control the troublesome motion. The damper includes a volume compensator channel in fluid communication with the damper fluid, the volume compensator channel including a centrifugal force mass member movable along a volume compensating length of the volume compensating channel, wherein a rotation about the rotation axis forces the centrifugal force mass member towards an outboard end of the volume compensating channel and pushes damper fluid from the volume compensator channel towards the at least first working chamber.