Embedded Fuselage Light Unit for Engine Warning Visibility
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Solution Overview
Problem
Existing airplane exterior lighting systems do not effectively warn ground personnel of running engines, particularly in areas blocked by the engines themselves, posing a safety risk due to the blocking of red flashing lights by the aircraft's engines.
Innovation Solution
An exterior airplane light unit is embedded into the side portion of the fuselage, emitting a sequence of red light flashes towards the engine area, ensuring visibility and safety for ground personnel through a controlled LED-based system that synchronizes with the beacon light system, enhancing warning efficacy without aerodynamic impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If red flashing beacon lights are mounted on the top and bottom of the airplane fuselage, then the lights can warn ground personnel of operational engines, but the engines themselves block the light from reaching ground personnel in front of the aircraft
Solution Approach 1:
The patent introduces a new spatial dimension for light emission by mounting lights on the wingtips, which are laterally positioned away from the engine path. This lateral positioning in the horizontal plane allows light to reach ground personnel in front of the aircraft without being blocked by the engines, complementing the traditional top-bottom beacon light arrangement.
Solution Approach 2:
The warning light system is segmented into multiple independent light sources positioned at different locations: traditional top and bottom beacon lights plus additional wingtip-mounted lights. This segmentation allows each light source to serve a specific directional purpose, with wingtip lights specifically addressing the front-area warning need that traditional beacons cannot fulfill.
2Illumination intensity
If white strobe lights with high intensity are used, then long-range attention is achieved, but the lights do not provide adequate warning to ground personnel in blocked areas
Solution Approach 1:
Different types of lights with different characteristics are deployed in different locations: high-intensity white strobe lights for long-range visibility, and additional red beacon lights mounted on wingtips for localized ground personnel warning in front of the aircraft. Each light type is optimized for its specific function and location.
Solution Approach 2:
The wingtip-mounted light unit serves multiple functions: it provides warning to ground personnel in front of the aircraft, complements the traditional beacon light system, and can be integrated with existing aircraft lighting controls. The system achieves both long-range attention and localized warning effectiveness.
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 provides reliable and visible warning to ground personnel of running engines, improving safety by ensuring the area in front of the engines is illuminated with red light flashes, even when blocked by the aircraft's structure, thus enhancing operating safety at airports.
Implementation Method 1
at least one light source and at least one optical system, with the at least one light source and the at least one optical system being arranged between the housing and the lens cover and being arranged to direct a warning light output towards an engine of the airplane
Data Source
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AI summary
An exterior airplane light unit (40) includes a housing (42) and a lens cover (48), the housing and the lens cover being shaped to embed the exterior airplane light unit into a side portion (120) of a fuselage (12) of an airplane (10) in front of a wing root section (24) of the airplane, with the lens cover blending into the side portion of the fuselage of the airplane, and at least one light source (51) and at least one optical system (50), with the at least one light source and the at least one optical system being arranged between the housing and the lens cover and being arranged to direct a warning light output (150) towards an engine (22) of the airplane, wherein the warning light output, provided by the at least one light source and the at least one optical system, includes a sequence of red light flashes for alerting ground personnel in front of the engine of the airplane.