Aircraft Attitude Display Symbology for Faster Pilot Orientation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing aircraft attitude indicators lack intuitive symbology for representing pitch and roll, leading to reduced pilot attitude awareness and increased reaction time in critical flight situations, contributing to accidents such as Loss of Control (LOC).
Innovation Solution
A pear-shaped attitude indicator system that generates symbology image data representing pitch and roll using a vertically distorted pear shape with a thin upper neck and thicker base, accompanied by a chevron shape for angle of attack, sawtooth cracks for stall warnings, and slip/skid indicators, easily implementable on new and existing aircraft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional circular attitude indicator is used, then the display geometry is simple and easy to manufacture, but the pilot's attitude awareness is reduced and reaction time increases in critical situations
Solution Approach 1:
The patent applies asymmetry by changing the traditional circular attitude indicator shape to a pear-shaped indicator. The pear shape has a narrower top portion and a wider bottom portion, creating an asymmetric geometry that intuitively represents aircraft attitude. When the aircraft is level, the pear shape is oriented vertically; when the aircraft pitches or rolls, the pear shape rotates accordingly, providing immediate visual feedback about attitude changes without requiring pilot interpretation of angular measurements.
2Ease of manufacture
If monochromatic symbology is used on HUD/HMD, then the display is simple and easy to implement, but the pilot's attitude awareness is slightly reduced
Solution Approach 1:
The patent applies color changes by using a two-color system (blue for sky, brown for earth) in the pear-shaped attitude indicator. This color differentiation enhances the pilot's ability to quickly distinguish between sky and earth portions of the horizon, improving attitude awareness. The colored semicircles provide intuitive visual cues that work effectively with both monochromatic and color-capable displays, maintaining ease of implementation while significantly improving reliability of attitude indication.
3Ease of manufacture
If the attitude indicator uses a circle shape, then the manufacturing is simple, but when there is a change of angle the shape remains the same requiring the pilot to interpret colors and read angle lines
Solution Approach 1:
The patent applies asymmetry by changing the traditional circular attitude indicator shape to a pear-shaped indicator. The pear shape has a narrower top portion and a wider bottom portion, creating an asymmetric geometry that intuitively represents aircraft attitude. When the aircraft is level, the pear shape is oriented vertically; when the aircraft pitches or rolls, the pear shape rotates accordingly, providing immediate visual feedback about attitude changes without requiring pilot interpretation of angular measurements.
Solution Approach 2:
The patent applies color changes by using a two-color system (blue for sky, brown for earth) in the pear-shaped attitude indicator. This color differentiation enhances the pilot's ability to quickly distinguish between sky and earth portions of the horizon, improving attitude awareness. The colored semicircles provide intuitive visual cues that work effectively with both monochromatic and color-capable displays, maintaining ease of implementation while significantly improving reliability of attitude indication.
4Quantity of substance
If digital screens are made bigger to display more information, then more information can be displayed, but the attitude indicator symbology remains the same and does not improve effectiveness
Solution Approach 1:
The patent applies asymmetry by changing the traditional circular attitude indicator shape to a pear-shaped indicator. The pear shape has a narrower top portion and a wider bottom portion, creating an asymmetric geometry that intuitively represents aircraft attitude. When the aircraft is level, the pear shape is oriented vertically; when the aircraft pitches or rolls, the pear shape rotates accordingly, providing immediate visual feedback about attitude changes without requiring pilot interpretation of angular measurements.
Solution Approach 2:
The patent applies color changes by using a two-color system (blue for sky, brown for earth) in the pear-shaped attitude indicator. This color differentiation enhances the pilot's ability to quickly distinguish between sky and earth portions of the horizon, improving attitude awareness. The colored semicircles provide intuitive visual cues that work effectively with both monochromatic and color-capable displays, maintaining ease of implementation while significantly improving reliability of attitude indication.
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
Enhances pilot intuition and quick response to critical flight conditions by providing intuitive measurements for parameters like angle of attack, stall warnings, and slip/skid indications, reducing the risk of Loss of Control (LOC) accidents.
Implementation Method 1
An aircraft's attitude indicator is an instrument that uses a gyroscope or the equivalent, maintaining rigidity in space, hence keeping the indicator always level with the horizon when set properly.
Data Source
AI summary
An attitude display system for use in an aircraft has at least one display unit visible by a pilot within a cockpit. A symbology generator is configured for receiving input from at least one attitude sensor and generating symbology image data representative of a pear-shaped attitude indicator, distorted vertically to represent a pitch of the aircraft and rotated to represent a roll angle of the aircraft. The symbology generator may further be configured for adding a horizontal line that represents a horizon, a regular trapezoid representing a downward gravity vector at a base of the trapezoid, a pitch angle of the aircraft, split wings representing an angle of attack of the aircraft, and a stall warning in a sawtooth crack shape. A tail portion of a T-shape with the curved top edge is itself curved in a direction opposite that of an aircraft spin direction.