Rotor Blade Light Pattern Alerting for Obstacle-Aware Landing
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Solution Overview
Problem
Current systems fail to reliably detect and indicate potential rotor strike obstacles for rotary wing aircraft, especially in unfamiliar airspace, increasing pilot workload during take-off and landing maneuvers.
Innovation Solution
A safe zone alert system for rotary aircraft equipped with light engines mounted on rotor blades that emit light beams toward the ground surface, producing patterns to indicate obstacles, and a processing system to vary beam color and pattern based on detected obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pilots visually monitor for potential obstacles during take-off and landing maneuvers, then rotor strike prevention is improved, but pilot workload significantly increases
Solution Approach 1:
The patent introduces an intermediary obstacle detection system that includes sensors, processors, and visual display devices. This intermediary system performs the obstacle monitoring function between the external environment and the pilot, filtering and presenting only relevant safety information. This reduces pilot workload by automating the continuous visual scanning task while maintaining reliable rotor strike prevention through the intermediary detection and alerting mechanisms.
2Reliability
If no obstacle detection system is implemented, then device complexity is reduced, but rotor strike detection reliability is insufficient
Solution Approach 1:
The obstacle detection system is segmented into distinct functional modules: sensor units for detecting obstacles, processing units for analyzing sensor data and determining obstacle characteristics, and display units for presenting information to the pilot. This segmentation allows each component to perform its specific function efficiently, improving overall detection reliability while managing system complexity through modular architecture and clear functional separation.
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 detects and indicates potential rotor strike obstacles, reducing pilot workload by providing visual cues for obstacle avoidance.
Implementation Method 1
a light engine that is mounted on at least one of the rotor blades and is configured, upon being energized, to emit a light beam
Data Source
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AI summary
A safe zone alert system for a rotary aircraft that includes a fuselage and at least one rotor that is rotationally mounted on the fuselage and is configured to rotate about a rotational axis, and where the rotor has plurality of rotor blades extending therefrom. The safe zone alert system includes a light engine that is mounted on at least one of the rotor blades and is configured, upon being energized, to emit a light beam at a predetermined angle relative to a line that extends from the at least one rotor blade and that is parallel to the rotational axis, and toward a ground surface above or upon which the aircraft is located, thereby producing a light pattern on the ground surface.