Aircraft Propeller Hub Lighting System for Bird Strike Prevention
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Solution Overview
Problem
The emerging Urban Air Mobility (UAM) and Unmanned Aerial Vehicle (UAV) aircraft are at a higher risk of bird strikes due to their operation at lower altitudes, necessitating an effective system to prevent such collisions.
Innovation Solution
A lighting system integrated into the aircraft's propeller hub, comprising a light source and optical element that redirects light radially outward to reflect off rotor blades, potentially diverting birds away from the flight path, powered by a pulse width modulated current synchronized with the rotor blades' frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UAM/UAV aircraft operate at lower altitudes to provide urban air mobility services, then accessibility and operational utility are improved, but the likelihood of bird strikes increases
Solution Approach 1:
The lighting system proactively creates visual deterrents before bird strikes can occur. By illuminating the rotor blades with lights mounted on the aircraft, the system prevents birds from approaching dangerous zones, thereby preemptively counteracting the harmful effect of bird strikes that inherently increases at lower operating altitudes
2Device complexity
If traditional lighting systems are used without synchronization, then device complexity is reduced, but visual effectiveness against birds decreases
Solution Approach 1:
The lighting system employs periodic illumination synchronized with the rotational frequency of the propeller or rotor blades. This creates flashing or strobe effects that enhance visual detectability by birds, making the aircraft more conspicuous during critical phases of flight without requiring overly complex continuous illumination systems
Solution Approach 2:
The system incorporates sensors that detect the rotational speed of the propeller or rotor blades and provide feedback to the lighting control system. This feedback mechanism enables automatic synchronization of the light pulses with the blade rotation, optimizing visual effectiveness while maintaining relatively simple system architecture through adaptive control
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 reduces the likelihood of bird strikes by creating a visual deterrent using light reflections from the rotor blades, enhancing safety for UAM and UAV aircraft operations.
Implementation Method 1
The optical element is mounted within the hub and is disposed to receive the light emitted by the light source and is configured, upon receipt of the light, to redirect the light radially outward from the hub so that the light reflects off the rotor blades
Data Source
AI summary
A lighting system for an aircraft having at least one rotationally mounted propeller assembly that includes hub and a plurality of rotor blades extending radially away from the hub includes a light source and an optical element. The light source is mounted within the hub and is configured, upon being energized, to emit light in a first direction. The optical element is mounted within the hub and is disposed to receive the light emitted by the light source and is configured, upon receipt of the light, to redirect the light radially outward from the hub so that the light reflects off the rotor blades.