Projectile Power Generator via Differential Spin Flywheel
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Solution Overview
Problem
Conventional power sources for airborne objects, such as batteries, are inadequate due to size, energy capacity, sensitivity to thermal changes, and deterioration over time, making them unsuitable for reliable power generation during flight and high g-forces.
Innovation Solution
A power generator integrated into a projectile that utilizes a two-piece assembly with a rotor and stator, generating power through differential spin rates, eliminating the need for pre-stored power and capable of withstanding high g-forces and long storage periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional power sources (batteries) are used for airborne objects, then the device can operate, but the power source becomes too large and has insufficient energy capacity
Solution Approach 1:
The patent replaces the chemical energy storage system (batteries) with a mechanical energy generation system (flywheel-based power generator). The flywheel stores kinetic energy mechanically and generates electricity through differential rotation between the flywheel and stator, eliminating the need for large chemical battery packs while maintaining power output capability.
Solution Approach 2:
The patent employs a dynamic power generation system where the flywheel rotates at variable speeds independent of the projectile's flight trajectory. The differential rotation between the flywheel and stator creates dynamic electromagnetic induction, allowing continuous power generation during flight without being constrained by static battery capacity limitations.
2Reliability
If conventional power sources (batteries) are used for airborne objects, then the device can operate, but the power source deteriorates over time and is sensitive to thermal changes
Solution Approach 1:
The patent replaces chemical energy storage (batteries subject to thermal degradation and time-based deterioration) with a mechanical kinetic energy storage system (flywheel). The flywheel's solid-state construction eliminates chemical reactions, making it immune to thermal changes and capable of long-term storage without degradation, significantly improving reliability and duration of action.
3Power
If a power generator with rotor and stator is used, then sufficient power can be generated, but the device complexity increases
Solution Approach 1:
The patent divides the power generation system into two independent rotational components: the flywheel (rotor) and the stator. This segmentation allows each component to be optimized independently—the flywheel for energy storage and the stator for power generation—simplifying the overall design while maintaining high power generation capability. The modular structure reduces manufacturing complexity and assembly difficulty.
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 power generator provides a reliable, high-performance power source for airborne objects, scalable for various projectile sizes, with a long storage life and ability to generate sufficient power for onboard electronics without the limitations of traditional batteries.
Implementation Method 1
The power generator is configured to generate power when a rotational velocity of the ring is different from a rotational velocity of the stator
Data Source
AI summary
A projectile includes a body and a power generator secured to the body. The power generator includes a stator and a ring including at least one magnet and extending radially around and freely rotatable about at least a portion of the stator. A power generator for a projectile is also provided.