VTOL Aerial Vehicle Lift Propeller Segmentation
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Solution Overview
Problem
The maximum takeoff weight and effective load of existing vertical takeoff and landing (VTOL) unmanned aerial vehicles are insufficient, limiting their task load and operational capabilities.
Innovation Solution
The design incorporates multiple groups of lift propellers, including additional lift propellers on the bottom sides of linear supports, and wingtip propellers, along with propulsion and traction propellers, to enhance takeoff and landing power, increasing the maximum takeoff weight and effective load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the takeoff weight of existing VTOL unmanned aerial vehicle is increased to increase effective task load, then the effective load provided by lift in level flight is improved, but the maximum takeoff weight and effective load are insufficient due to limited takeoff and landing power
Solution Approach 1:
The lift system is segmented into multiple independent lift propellers (first group on top side of linear support, second group on bottom side of linear support) distributed across different locations. This segmentation allows each propeller to contribute independently to total lift, enabling significant increase in maximum takeoff weight without requiring a single oversized propulsion system.
Solution Approach 2:
The patent adds lift propellers in the vertical dimension by placing them on both the top side and bottom side of the linear support structure. This three-dimensional distribution of lift sources maximizes the use of available space and enables the vehicle to achieve higher lift capacity while maintaining a compact overall structure.
2Power
If multiple groups of lift propellers are added to increase maximum takeoff weight and effective load, then takeoff and landing power is improved, but the device complexity increases
Solution Approach 1:
The linear support structure serves multiple functions: it provides structural support for the main wing, acts as a mounting platform for both groups of lift propellers, and contributes to the overall aerodynamic framework. This multi-functionality reduces the need for additional dedicated components, thereby limiting the increase in device complexity despite adding multiple lift propellers.
Solution Approach 2:
The patent merges the mounting structure for lift propellers with the existing linear support framework. By integrating the propeller mounting function into the structural support elements rather than adding separate mounting assemblies, the design achieves high lift capacity while minimizing structural complexity.
3Power
If additional lift propellers are added to increase rotor lift, then the maximum rotor lift and task load capacity are increased, but the weight of the vehicle increases
Solution Approach 1:
The patent optimizes the parameters of the lift propellers including their rotational speed, blade geometry, and spacing to maximize lift efficiency. By carefully selecting these parameters, the system achieves high rotor lift capacity while minimizing the weight of the propeller assembly itself, ensuring that the weight increase is minimal relative to the lift gain.
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
This configuration significantly improves the takeoff and landing power, increasing the maximum rotor lift and task load capacity by 22% while maintaining a minimal weight increase, allowing for the transport of larger loads.
Implementation Method 1
a first group of multiple lift propellers which are arranged on the top side of the left linear support; a second group of multiple lift propellers which are arranged on the top side of the right linear support; a left additional lift propeller which is arranged on the bottom side of the left linear support; and a right additional lift propeller which is arranged on the bottom side of the right linear support
Data Source
AI summary
A vertical takeoff and landing aerial vehicle, which comprises a plurality of lift propellers respectively arranged at the top sides of a left linear support and a right linear support, and a left additional lift propeller and a right additional lift propeller respectively arranged on the bottom sides of the left linear support and the right linear support. According to the aerial vehicle provided by the disclosure, the takeoff and landing power of the aerial vehicle is effectively improved and the maximum take-off weight and effective load of the aerial vehicle are improved by using multiple groups of lift motors on the aerial vehicle.