Geostationary Balloon Platform with EHD Thrusters
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Solution Overview
Problem
The satellite industry faces high costs and challenges with satellite maintenance, retrieval, and orbital debris due to the 'launch and forget' mindset, coupled with increasing space crowding and debris accumulation, necessitating a cost-effective and sustainable alternative for high-altitude services.
Innovation Solution
A high-altitude balloon platform using a superpressure balloon and electrohydrodynamic thrusters, powered wirelessly from the ground, providing long-duration, geostationary services with minimal environmental impact and the ability to be directed for maintenance and upgrades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellites are used to provide high-altitude services, then coverage and transmission capability are improved, but cost and complexity increase significantly
Solution Approach 1:
The patent replaces the complex mechanical and orbital systems of satellites with a simpler aerostat-based system operating in the stratosphere. The balloon platform uses atmospheric buoyancy instead of orbital mechanics, eliminating the need for complex launch systems, orbital insertion mechanisms, and space-rated components while achieving similar coverage areas.
Solution Approach 2:
The invention changes the operational altitude parameter from orbital heights (hundreds of kilometers) to stratospheric heights (around 20-30 kilometers), enabling the use of conventional materials and technologies instead of specialized space-grade components, thereby reducing system complexity and cost.
2Duration of action of stationary object
If satellites are deployed for long-term service, then continuous coverage is achieved, but maintenance and retrieval become impossible
Solution Approach 1:
The aerostat platform is designed to be self-sufficient with onboard systems for power generation, resource management, and autonomous operation. The system includes reusable components that can be refurbished on the ground, and the platform can perform self-diagnosis and self-correction, eliminating the need for human intervention in orbit while maintaining long-term service capability.
Solution Approach 2:
The patent employs dynamic, reconfigurable system architecture where components can be adjusted, replaced, or upgraded while the platform remains operational. The modular design allows for easy maintenance and refurbishment on the ground, enabling the system to adapt to changing service requirements over extended operational periods.
3Area of stationary object
If more satellites are launched to increase coverage, then service area expands, but orbital debris and collision risks increase
Solution Approach 1:
The invention uses the stratospheric atmosphere as an intermediary medium to achieve satellite-like coverage without entering orbital space. The aerostat platforms operate in the dense enough atmosphere to allow for controlled deployment and retrieval, while remaining above most weather phenomena, thus providing the desired coverage without contributing to orbital debris accumulation.
Solution Approach 2:
The patent employs cost-effective, replaceable aerostat platforms that can be deployed and retrieved multiple times. These platforms use conventional materials and can be refurbished or replaced on the ground, eliminating the need for expensive, single-use satellite systems and reducing the accumulation of long-lived debris in orbital space.
4Reliability
If satellite payloads are made durable for space environment, then reliability in orbit improves, but cost of construction and launch increases
Solution Approach 1:
The invention changes the operational environment parameter from the harsh vacuum of space to the more benign stratospheric atmosphere, enabling the use of conventional materials and manufacturing processes. This eliminates the need for expensive space-rated components, thermal vacuum testing, and specialized launch-qualified hardware while maintaining sufficient reliability for the intended service duration.
Solution Approach 2:
The patent replaces the need for robust, launch-qualified mechanical systems with a gentler deployment mechanism suitable for atmospheric operation. The aerostat system uses soft, flexible structures that can be inflated and deployed on the ground, eliminating the need for complex launch mechanisms, vibration-resistant mounting, and shock-absorbing configurations required for satellite deployment.
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 balloon platform offers a sustainable, cost-effective, and environmentally friendly solution for high-altitude services, reducing space debris, enabling efficient data collection and transmission, and providing uninterrupted coverage with minimal ground footprint and operational risks.
Implementation Method 1
The craft is launched from the ground and can fly into position at less than one g. The craft stays at the chosen altitude due to the buoyancy of the superpressure balloon.
Implementation Method 2
Electrohydrodynamic (EHD) thrusters are presented to maintain position by overcoming stratospheric winds.
Implementation Method 3
A rectifying antenna ('rectenna') on the bottom of the balloon converts waves into direct current for on-board use.
Data Source
AI summary
A geostationary platform is held afloat by a superpressure balloon. A suitable altitude is 25 km. The craft carries electrohydrodynamic thrusters, to overcome winds, held within a scaffold. Sensors determine position, velocity, acceleration and vector. A CPU performs instructions for station-keeping or navigation. A communication system is included to, inter alia, receive instructions from the ground. The craft carries a payload for observation and transmission, cradled in a temperature-controlled chamber. Power to the platform is transmitted in the form of electromagnetic waves (with suitable frequencies including microwaves of 2.45 GHz or 5.8 GHz) from a ground-based transmitter to a receiving antenna on, or affixed to, the balloon which converts the electromagnetic energy to direct current. A step-up voltage converter increases the voltage as required. A ground station monitors craft position and operational efficiency by radar to help ensure safe takeoff, operation, and landing of the craft.