Oscillating Pump System for Aircraft Vibration Isolation
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Solution Overview
Problem
Existing oscillating pump systems for aircraft face limitations in delivering oscillating fluid flow to components like vibration isolators, often requiring large pistons, heavy devices, and inefficient conversion of rotational motion to translational motion, leading to limited displacements and force output.
Innovation Solution
An oscillating pump system with a rotatable oscillator disk that alternates fluid flow between inlet and oscillating ports, generating oscillating fluid flow by routing fluid between the outlet port and oscillating ports, and utilizing a drive shaft and motor to provide rotational energy, allowing for efficient sinusoidal oscillation without reversing direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If traditional pumping devices are used to generate oscillating fluid flow, then sufficient force output can be achieved, but the device becomes heavy and complex
Solution Approach 1:
The patent replaces traditional mechanical pumping mechanisms (pistons, valves, crankshafts) with a fluid dynamic approach using a rotor-stator assembly. The rotor rotates continuously in one direction, utilizing fluid pressure differentials and geometric design to generate oscillating flow patterns without reciprocating motion, thereby reducing mechanical complexity and weight while maintaining force output.
Solution Approach 2:
The invention uses fluid pressure and flow dynamics as the primary mechanism for generating oscillating motion. The rotor-stator configuration creates alternating high and low pressure zones that drive fluid back and forth through the system, replacing traditional mechanical oscillation generation methods with a purely fluid-based approach that reduces moving mass and mechanical complexity.
2Productivity
If rotational motion is converted to translational motion using traditional mechanisms, then oscillating fluid flow can be generated, but efficiency is reduced due to motion conversion losses
Solution Approach 1:
The patent eliminates the need for mechanical motion conversion by using a rotor that rotates continuously in one direction. The oscillating fluid flow is generated directly through fluid dynamic interactions between the rotor and stator, bypassing the need for crankshafts, connecting rods, or other mechanisms that convert rotational motion to translational motion, thereby significantly reducing energy losses.
3Quantity of substance
If large pistons are used to achieve sufficient displacement, then adequate fluid flow can be delivered, but the device size and weight increase
Solution Approach 1:
The patent changes the operating parameters of the fluid system by using high-speed rotation of a compact rotor to generate sufficient fluid displacement. Instead of relying on large piston area for displacement, the system achieves equivalent or superior displacement through increased rotational speed and optimized rotor-stator geometry, resulting in a much smaller and lighter pump assembly.
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 system effectively delivers oscillating fluid flow to vibration isolators, reducing vibration between aircraft components with improved efficiency and reduced size and weight, as it avoids the need for complex motion conversion and large inertia forces.
Implementation Method 1
An oscillator disk is disposed between the first port stage and the second port stage. The oscillator disk is rotatable relative to the inlet port, the outlet port, the first oscillating port and the second oscillating port. During rotation, the oscillator disk alternatingly routes the fluid to the inlet port from the first and second oscillating ports and alternatingly routes the fluid from the outlet port to the first and second oscillating ports, thereby generating oscillating fluid flow.
Implementation Method 2
the oscillating pump system may include a drive shaft operable to provide rotational energy to the pump and the oscillator disk, and a motor operable to provide rotational energy to the drive shaft. In such embodiments, the drive shaft may be operable to rotate in a single direction and drive the pump and the oscillator disk at the same rotational speed.
Implementation Method 3
In certain embodiments, the oscillating pump system may generate sinusoidal oscillating fluid flow.
Data Source
AI summary
An oscillating pump system includes a pump operable to circulate a fluid. The pump has a first port stage including an inlet port and an outlet port and a second port stage including a first oscillating port and a second oscillating port. An oscillator disk is disposed between the first port stage and the second port stage. The oscillator disk is rotatable relative to the inlet port, the outlet port, the first oscillating port and the second oscillating port. During rotation, the oscillator disk alternatingly routes the fluid to the inlet port from the first and second oscillating ports and alternatingly routes the fluid from the outlet port to the first and second oscillating ports, thereby generating oscillating fluid flow.