Rotor Blade Wind Power Generation for Autonomous Flight

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Solution Overview

Problem

Flying objects that rely on electric power from storage batteries require frequent battery replacement or charging, leading to labor-intensive maintenance and limited operational flexibility.

Innovation Solution

A flying object system with rotor blades that generate lift and thrust by rotating and a rotating electrical machine unit that converts rotational power into electric power, allowing the flying object to operate without external power supply by harnessing wind energy for power generation when not in flight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If a flying object uses a storage battery to power the rotor blades, then the flying object can achieve flight, but the storage battery requires frequent replacement or charging which increases maintenance labor

Engineering Contradiction:
Improveflight operation durationVSAvoidbattery maintenance frequency
Core Design Contradiction:
Duration of action of moving objectVSEase of repair

Solution Approach 1:

The patent combines the rotor blade system with a rotating electrical machine that functions as both a motor during flight and a generator during non-flight periods. This merging eliminates the separate battery system, allowing the rotor blades to generate electrical power through wind-driven rotation when not in use, thereby resolving the contradiction between operational duration and maintenance frequency.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The flying object becomes self-sufficient by using its rotor blades to generate electrical power during non-flight periods. The rotating electrical machine converts the mechanical energy from wind-driven rotor rotation into electrical energy, enabling the system to power itself without external battery replacement or charging, thus eliminating maintenance labor.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If a flying object relies on stored electric power for operation, then it can achieve autonomous flight, but it requires external power supply infrastructure for battery charging

Engineering Contradiction:
Improveautonomous operation capabilityVSAvoidoperational flexibility in remote areas
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The system generates its own electrical power through the rotating electrical machine driven by wind-powered rotor rotation during non-flight periods. This self-powering capability enables the flying object to operate autonomously in remote areas without access to external charging infrastructure, simultaneously maintaining autonomous operation and enhancing adaptability to various environments.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention extracts the power generation function from external infrastructure and integrates it directly into the flying object itself. By incorporating the rotating electrical machine that converts wind energy into electrical power, the system removes the dependency on external charging stations, enabling operation in isolated locations.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of repair

If the rotor blades are used for generating electric power when not flying, then maintenance frequency is reduced, but the system complexity increases due to the rotating electrical machine unit

Engineering Contradiction:
Improvemaintenance frequencyVSAvoidrotating electrical machine integration
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

The rotating electrical machine is merged with the existing rotor blade system, serving dual functions as both a motor during flight and a generator during non-flight periods. This integration approach minimizes additional complexity by utilizing the same mechanical structure for both propulsion and power generation, rather than adding completely separate systems.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The rotating electrical machine unit is designed with multi-functionality, operating as an electric motor when powered to rotate the rotor blades for flight, and as an electric generator when the rotor blades are rotated by wind to generate electrical power. This universal design reduces overall system complexity by eliminating the need for separate motor and generator components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 maintenance frequency by eliminating the need for battery charging and enables the flying object to operate autonomously, with the ability to transmit information and perform tasks without external power, such as in emergency situations like marine accidents.

Implementation Method 1

The rotating electrical machine unit generates electric power based on a power that rotates the rotor blades when not flying

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

a rotating electrical machine unit that rotates the rotor blades. The rotor blades receive wing power and rotate when not flying. The rotating electrical machine unit generates electric power based on a power that rotates the rotor blades when not flying

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS12097981B2Flying object and flying object system
Publication Date: 2024.09.24 MITSUBISHI HEAVY IND LTD
  • US12097981B2 patent drawing
  • US12097981B2 patent drawing
  • US12097981B2 patent drawing

AI summary

A flying object 20 is provided with a rotor blade 200 that generates lift and thrust by rotating and a rotating electrical machine unit that rotates the rotor blade 200. The rotor blade 200 receive wind power and rotate when not flying. The rotating electrical machine unit generates electric power based on a power that rotates the rotor blades 200 when not flying. In addition, the flying object 20 may be provided with a power storage device 230 that stores electric power generated by the rotating electrical machine unit. In addition, the flying object 20 may be provided with a detachably connected cartridge 260 that has a desired function.