Ion Extraction Plasma Engine With Recombination Thrust Boost
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Solution Overview
Problem
Existing ion engines, including electroaerodynamic (EAD) and microwave-based plasma thrusters, suffer from low thrust-to-power and thrust-to-weight ratios, making them impractical for human flight and ground vehicles due to complexity, inefficiency, and high component weight.
Innovation Solution
A multi-stage plasma engine with a decoupled ion source and extraction system using dielectric barrier discharge plasma sources, pulsed plasma technology, and ion optics to efficiently generate and transport atomic species, optimizing each stage for specific applications and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ion engines are used, then ion propulsion is achieved, but thrust-to-power ratio is low
Solution Approach 1:
The ion engine is divided into separate functional stages: an ionization chamber for generating ions and an acceleration chamber for propelling them. This segmentation allows each stage to be optimized independently, with the ionization chamber focusing on efficient ion production and the acceleration chamber maximizing thrust generation, thereby improving the overall thrust-to-power ratio
Solution Approach 2:
The patent employs pulsed plasma technology that rapidly varies electrical parameters (voltage, current, frequency) to optimize ionization efficiency at different stages of the plasma cycle. By dynamically adjusting these parameters rather than using continuous DC operation, the system achieves higher power efficiency and thrust output
2Productivity
If ion engines are used for human flight, then propulsion is achieved, but thrust-to-weight ratio is low
Solution Approach 1:
The patent replaces heavy mechanical moving parts (such as turbines, compressors, and moving valves found in conventional engines) with stationary plasma generation and acceleration components. The ion engine uses electric fields and magnetic fields instead of mechanical mechanisms to generate and control the propulsive flow, dramatically reducing the engine's weight while maintaining or improving thrust output
3Productivity
If multi-stage plasma engine with decoupled ion source is used, then thrust efficiency is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple plasma generation and acceleration functions into an integrated multi-stage device where the ionization chamber and acceleration chamber work as a unified system. By merging these functions into a single engineered apparatus with coordinated stages rather than separate independent systems, the patent reduces overall system complexity while maintaining the thrust efficiency benefits of the decoupled architecture
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 engine achieves significantly improved thrust-to-power and thrust-to-weight ratios, enabling practical applications in aircraft and spacecraft by efficiently generating and recycling atomic species for thrust, reducing component weight and complexity.
Implementation Method 1
A first electrode and a second electrode are positioned within the plasma source, with the second electrode separated from the first electrode by a dielectric barrier. A pulsed voltage is applied between the first electrode and the second electrode to generate a plasma containing ions of atomic species
Implementation Method 2
The ion extractor includes a plurality of extraction electrodes, each of the extraction electrodes being independently energizable. The pulsed plasma engine utilizes ion acceleration to generate thrust
Implementation Method 3
The reaction region includes structures positioned to increase surface area per unit length. Atomic species recombine into molecular species to generate heat for combustion to create thrust
Implementation Method 4
A pulsed voltage is applied between the first electrode and the second electrode to generate a plasma containing ions of atomic species
Data Source
AI summary
A plasma engine includes a plasma source that generates ions from molecular gas species received at a gas input where at least some of the ions generated are atomic species ions. An ion extractor is configured to extract ions from the plasma source with an electric field. A housing comprising a recombination region receives ions extracted from the ion extractor. At least some of the atomic species ions recombine into molecular species in the housing, thereby releasing energy for thrust.