Propeller Tuner Assembly with Hydraulic Lifting Mechanism
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Solution Overview
Problem
Existing propeller tuning methods require repeated removal and reinstallation of propellers for measurement and tuning, which is time-consuming and labor-intensive, and can cause mechanical instability in bearing assemblies due to applied loads.
Innovation Solution
A propeller tuning assembly with a hydraulic lifting mechanism that allows for in situ measurement and tuning of propellers without removing them from the device, isolating the bearing assembly from tuning loads by vertically translating the propeller mounting assembly during the tuning process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the propeller remains mounted on the bearing assembly during tuning, then productivity is improved by eliminating repeated removal and installation, but the bearing assembly reliability deteriorates due to tuning loads causing mechanical instability and potential failure
Solution Approach 1:
The bearing assembly is divided into two functional segments: an upper rotatable portion that supports the propeller during measurement, and a lower fixed portion that provides structural support. During tuning, the propeller is segmented from the bearing assembly by removing it from the rotatable mount, allowing tuning operations without bearing loads while maintaining measurement capability when needed.
Solution Approach 2:
The system dynamically transitions between two operational states: during measurement, the propeller is mounted on the rotatable bearing assembly for rotation and data collection; during tuning, the propeller is removed from the bearing assembly to eliminate loads. This dynamic reconfiguration allows the system to optimize for either measurement or tuning functions at different times, resolving the contradiction between continuous operation and bearing protection.
2Reliability
If the propeller is removed for tuning, then bearing assembly reliability is maintained by avoiding tuning loads, but productivity deteriorates due to time-consuming repeated removal and installation cycles
Solution Approach 1:
The measurement process is performed preliminarily before tuning operations. By completing all necessary measurements while the propeller is mounted on the bearing assembly, the system determines the exact tuning requirements in advance. This preliminary action allows subsequent tuning operations to be performed efficiently with minimal repeated handling, as the tuning plan is already established from the initial measurement data.
3Manufacturing precision
If repeated measurement and tuning cycles are performed, then manufacturing precision is improved by ensuring propeller compliance, but loss of time increases due to multiple removal and reinstallation operations
Solution Approach 1:
All measurement operations are performed preliminarily while the propeller remains mounted on the bearing assembly, capturing complete pitch and geometric data before any tuning occurs. This preliminary measurement establishes a comprehensive baseline that guides all subsequent tuning operations, eliminating the need for repeated measurement-tuning cycles and reducing total adjustment time while maintaining precision requirements.
Data Source
AI summary
One embodiment of a propeller tuner assembly (10) formed in accordance with the present disclosure includes a frame (12) and a bearing assembly (64) having a coupler (90) adapted to selectively couple a propeller (20) to the frame (12). The coupler (90) is selectively movable from a first position where at least a portion of the coupler (90) is substantially isolated from tuning loads applied to the bearing assembly (64).