Nanosatellite Array Illumination for Ground Displays
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Solution Overview
Problem
Existing solutions for creating signs in space visible from the ground require large and expensive satellites, making them impractical for widespread use, such as advertising or national celebrations.
Innovation Solution
An array of nanosatellites with illumination elements, such as LEDs, that can position themselves and coordinate to form visible signs from the ground, using battery power and photovoltaic recharging for sustained illumination, and a ground-based control system to manage the array for efficient display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If large satellites are used to create visible signs in space, then the illumination intensity and visibility from ground is improved, but the weight, cost, and complexity of the satellite increases
Solution Approach 1:
The patent divides a single large satellite into multiple small nanosatellites (e.g., 6-12 satellites) that work together to form the visible sign. Each nanosatellite carries a small illumination element, and collectively they create the desired visual effect from ground view, avoiding the need for a single heavy satellite while achieving sufficient illumination intensity through coordinated operation.
2Illumination intensity
If large satellites with heavy deployment mechanisms are used, then the illumination capability is improved, but the manufacturing cost and complexity increases
Solution Approach 1:
The system segments the illumination function across multiple inexpensive nanosatellites rather than using one expensive large satellite with complex deployment mechanisms. This approach significantly reduces manufacturing and launch costs while achieving the same visual effect.
Solution Approach 2:
The patent employs inexpensive nanosatellites that can be mass-produced and launched more economically than large satellites. These smaller satellites have simpler mechanisms and lower manufacturing costs, making the overall system more cost-effective even if individual satellite lifetimes are shorter.
3Duration of action of moving object
If battery power is used for sustained illumination, then the duration of display is improved, but the energy consumption and battery weight increases
Solution Approach 1:
The total illumination duration requirement is segmented across multiple nanosatellites, each with smaller batteries. The collective operation of all satellites provides sustained illumination over the required period while each individual satellite carries lighter battery mass, reducing overall system complexity and launch constraints.
4Adaptability or versatility
If an array of nanosatellites is used to form signs, then the adaptability and display flexibility is improved, but the control complexity and coordination difficulty increases
Solution Approach 1:
The control system implements feedback mechanisms to monitor and adjust the positions and illumination states of individual nanosatellites in real-time. This enables coordinated operation and maintains formation accuracy despite orbital variations, managing the complexity through active control and communication between satellites and ground stations.
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
Enables the creation of dynamic signs over large areas with reduced costs and energy efficiency, allowing for advertising, national events, and disaster warnings, while being feasible for launch and operation.
Implementation Method 1
The illumination element may comprise a light emitting diode, battery power sufficient to illuminate said lamp for at least a minute, and photovoltaic recharging ability.
Implementation Method 2
The illumination element may comprise a light emitting diode
Implementation Method 3
The illumination element is a mirror, said mirror being directable to deflect focused light from another satellite source at the ground.
Data Source
AI summary
A nanosatellite with an illumination element, and an arrangement of nanosatellites in low earth orbit (LEO) arranged to controllably apply their illumination to be visible on the ground. The nanosatellites may be coordinated to provide illumination events visible on the ground at particular locations and particular times. Each nanosatellite has an illumination element that provides a sustained external illumination event being of at least momentary duration and to be visible from the ground. The event forms at least part of a display for viewing from the ground.