Rectenna-Activated Charged Particle Display for Aircraft Finishes
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Solution Overview
Problem
Current paint systems on aircraft are static and difficult to maintain, leading to high weight and maintenance costs, with existing dynamic solutions like e-inks being impractical due to increased weight and fuel costs.
Innovation Solution
A flexible display system using reflectance-type charged particles suspended in a dielectric fluid, activated by rectennas to switch between visible and non-visible states, allowing for a dynamic and maintainable finish without onboard power sources, enabling external control of color and design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional e-inks with surface charged particles in dielectric fluid are used to provide dynamic color change, then the display functionality is achieved, but the weight and cost of fuel increase due to required onboard power sources
Solution Approach 1:
The charged particles in the dielectric fluid self-organize and self-display colors without requiring onboard power sources. The particles respond to external electromagnetic signals by automatically migrating to form display patterns, eliminating the need for continuous electrical power and heavy electronic control systems on the aircraft.
Solution Approach 2:
The patent replaces the mechanical/electrical power system with an electromagnetic field-based control system. Instead of using onboard electrodes and power sources to move particles, the system uses external rectennas to generate electromagnetic signals that control particle migration, substituting heavy mechanical power systems with lightweight electromagnetic control.
2Adaptability or versatility
If static paint systems are used on aircraft surfaces, then the finish is durable and simple to apply, but the system lacks flexibility and requires frequent maintenance and repainting
Solution Approach 1:
The patent transforms the static paint system into a dynamic one by incorporating charged particles in dielectric fluid that can change their spatial distribution and optical properties in real-time. The finish transitions from a fixed state to a controllable dynamic state, allowing colors and patterns to be changed on-demand without physical repainting.
Solution Approach 2:
The system changes the fundamental parameter of the paint finish from static color to dynamically controllable color. By adjusting the electromagnetic signal parameters (frequency, amplitude, timing), the display characteristics of the charged particles are changed, enabling flexible customization of aircraft liveries and markings without altering the physical paint layer.
3Weight of moving object
If external equipment is used to activate the charged particles instead of onboard systems, then the aircraft weight is reduced, but the system requires external infrastructure and control mechanisms
Solution Approach 1:
The patent extracts the power source and control electronics from the aircraft system and places them externally. The aircraft carries only the lightweight dielectric fluid with charged particles, while the heavy power amplifiers, signal generators, and control systems are located on the ground in portable equipment, significantly reducing aircraft weight.
Solution Approach 2:
The patent introduces rectennas (rectifying antennas) as intermediary devices that convert electromagnetic signals from external equipment into electrical signals that control the charged particles. These rectennas act as lightweight intermediaries between the external control system and the particle display system, enabling wireless control without heavy onboard electronics.
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 reduces labor and weight, provides high flexibility in finishes, and allows for real-time changes without taking the vehicle out of service, eliminating the need for additional paints and finishes, while maintaining a competitive advantage by reducing downtime and maintenance costs.
Implementation Method 1
a first rectenna having dipole elements can be attached to the first capsule and conductively coupled to the first capsule to effect switching of the plurality of first reflectance-type charged particles between a substantially visible state to a substantially non-visible state when a signal having the first rectenna's wavelength is received
Implementation Method 2
Each of the reflectance-type charged particle can be configured to reflect a visible predetermined color when switched to the substantially visible state by the potential applied by the rectenna
Implementation Method 3
a first capsule containing a plurality of first reflectance-type charged particles suspended in a dielectric fluid
Data Source
AI summary
An apparatus and method for an electronically activated grouping of charged particles for providing a changeable image on a surface is disclosed and claimed herein. The apparatus can include a capsule containing a plurality of first reflectance-type charged particles suspended in a dielectric fluid. Attached to the capsule can be a first rectenna having dipole elements attached to the capsule and conductively coupled to the capsule to effect switching of the plurality of first reflectance-type charged particles between a substantially visible state to a substantially non-visible state when a signal having the first rectenna's wavelength is received.