Tilting Fan Assemblies for VTOL-to-Forward Flight Transition
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Solution Overview
Problem
Aircraft with vertical takeoff and landing capability face challenges in balancing vertical and horizontal thrust to enable hover, takeoff, landing, and cruise flight efficiently.
Innovation Solution
The aircraft is equipped with lift fan assemblies for vertical lift and tilting fan assemblies that can switch between vertical and forward flight positions, controlled by a system to manage thrust direction effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tilting fan assemblies are used to provide both vertical and horizontal thrust, then the aircraft can perform vertical takeoff and landing as well as forward flight, but the device complexity increases due to the need for tilting mechanisms and control systems
Solution Approach 1:
The tilting fan assemblies serve multiple functions by being able to orient in different directions. The same fan assembly provides vertical thrust during takeoff and landing, and horizontal thrust during forward flight, eliminating the need for separate lift fans and propellers. This multi-functionality directly addresses the versatility requirement while the patent manages the complexity through integrated control systems.
Solution Approach 2:
The fan assemblies are designed with tilting mechanisms that allow dynamic adjustment of their orientation. The fans can tilt between vertical and horizontal positions, enabling the aircraft to transition between different flight modes. This dynamic capability allows a single component to adapt to different operational requirements, improving versatility without requiring completely separate systems for each flight mode.
2Productivity
If tilting fan assemblies are implemented to enable seamless transitions between vertical and forward flight, then operational efficiency is enhanced, but the manufacturing complexity and cost increase
Solution Approach 1:
The tilting mechanism enables dynamic reconfiguration of thrust direction, allowing seamless transitions between vertical takeoff/landing and horizontal forward flight modes. This dynamic capability improves operational efficiency by enabling versatile flight patterns and optimized performance for different flight phases without requiring multiple separate systems.
Solution Approach 2:
The aircraft propulsion system is segmented into multiple independent tilting fan assemblies rather than using a single large propulsion system. Each fan assembly can be independently controlled and tilted, allowing modular manufacturing and assembly. This segmentation makes the complex system more manageable in terms of production and maintenance while maintaining the capability for seamless mode transitions.
3Measurement precision
If multiple fan assemblies are used to provide controlled vertical and horizontal thrust, then thrust control precision is improved, but the device complexity and weight increase
Solution Approach 1:
The propulsion system is divided into multiple independent fan assemblies, each capable of independent control and tilting. This segmentation allows precise control of total thrust by adjusting individual fan assemblies, improving thrust control precision. The modular approach also makes the complex system more manageable compared to a single large complex propulsion unit.
Solution Approach 2:
Each fan assembly incorporates tilting mechanisms that allow dynamic adjustment of thrust direction. This dynamic capability enables precise control of both magnitude and direction of thrust by adjusting the tilt angle of individual fans, achieving high thrust control precision while using a manageable number of components rather than a large number of fixed fans.
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 seamless transitions between vertical lift and forward flight, enhancing the aircraft's versatility and operational efficiency.
Implementation Method 1
The plurality of fan assemblies are configured to generate a thrust
Data Source
AI summary
Embodiments provide an aircraft with one or more tilting fan assemblies that are configured to tilt between a forward flight position and a vertical lift position. The aircraft may also include a plurality of lift fan assemblies for vertical movement. The tilting fan assemblies may be coupled to the fuselage or wings of the aircraft via one or more tilting mechanisms. A control system coupled to the aircraft may control the one or more tilting mechanisms to move the tilting fan assemblies between the forward flight position and the vertical lift position. The tilting fan assemblies may be coupled to one or more support structures that are coupled the fuselage or wings of the aircraft.