LIDAR Height Announcements for General Aviation Landing Approach
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Solution Overview
Problem
Existing aircraft systems lack effective and efficient height announcement systems during takeoff and landing, particularly for general aviation aircraft, which are not substitutes for certificated avionics and require FAA approval for installation.
Innovation Solution
The SkyVoice Alert LHA 500 system uses a Lidar-based height announcement unit that integrates with standard aircraft power, provides audio and wireless output, and includes a microcontroller with hardware serial UART ports for efficient communication, offering improved range and flexibility in installation, with optional GPS integration and customizable settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If LIDAR-based height detection is used during takeoff and landing, then height announcement accuracy is improved, but the system complexity increases
Solution Approach 1:
The patent replaces complex mechanical height measurement systems with LIDAR (Light Detection and Ranging) technology. The LIDAR unit emits laser beams and measures the time for light to reflect off the ground and return, providing precise height measurements without mechanical moving parts. This optical/electronic substitution resolves the contradiction by achieving high measurement precision through non-mechanical means.
Solution Approach 2:
The patent introduces a microcontroller as an intermediary that processes LIDAR data and generates height announcements. The microcontroller acts as a mediator between the LIDAR sensor and the audio output system, simplifying the overall architecture by centralizing control logic and reducing the need for complex direct connections between multiple subsystems.
2Adaptability or versatility
If the system operates across wide temperature ranges (−4° to +140° F.), then environmental adaptability is improved, but component reliability may deteriorate
Solution Approach 1:
The patent specifies that the system is designed to operate across a wide temperature range (−4° to +140° F.) by selecting components rated for these extreme conditions. This involves changing the operational parameters of electronic components to withstand thermal stress, ensuring reliable function in both cold and hot environments without requiring active temperature control mechanisms.
3Measurement precision
If the LIDAR beam path is kept clear of obstructions, then measurement accuracy is improved, but installation flexibility is reduced
Solution Approach 1:
The patent addresses the beam obstruction problem by utilizing the vertical dimension for LIDAR installation. The system is designed to be mounted on the upper surface of the aircraft fuselage or wing, pointing downward, thereby clearing horizontal obstructions like landing gear and fairings. This dimensional repositioning allows the laser beam to travel vertically without intersecting horizontal structural elements.
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 announces critical heights during takeoff and landing, enhancing pilot awareness with customizable alerts and minimal interference, while meeting FAA requirements and occupying minimal space within the aircraft.
Implementation Method 1
The SkyVoice Alert LHA 500 uses a LIDAR unit to detect height and announce it audibly during takeoff and landing
Data Source
AI summary
A Lidar-based SkyVoice Alert LHA 500 for a general aviation aircraft provides audible announcements of height above a landing surface (e.g., a runway) when the aircraft that is descending on approach or taking off, reaches a specific height above the ground. It gives repeated Gear warnings until the Gear is down and locked. It audibly announces preset GPS/MSL heights. It also announces various user selectable reminders like CheckList, LC GUMPS, Flaps, Check Oxygen, Check Altimeter, Check Fuel, Switch Tank, Top of Descent. The SkyVoice Alert LHA 500 is contained in a housing that mounts onto a removable access plate in a wing cavity, with the Lidar arranged to provide a vertical downward beam though a window formed in the access plate. A connector cable provides connection and disconnection between the SkyVoice Alert LHA 500 and the plane's audio panel.