UAV Drivetrain and Thruster Pylon Optimization
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) face challenges in transitioning between rotary and fixed-wing flight, leading to reduced operational range and increased risk due to drag forces from vertical thrusters, and there is a need for systems to optimize payload management and reduce human operator risks during cargo operations in inaccessible areas.
Innovation Solution
The development of a UAV drivetrain with a combustion engine and electrical distribution system that powers both vertical and horizontal thrusters, along with a detachable cargo container system that monitors and adjusts for payload balance and weight, and a processor for flight parameter balancing, enabling efficient transition between flight modes and ensuring safe cargo delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If vertical thrusters are deployed for rotary winged flight, then the UAV can takeoff and land in constrained areas, but drag forces increase at high speeds reducing operational range
Solution Approach 1:
The patent extracts the vertical thrusters from the main fuselage and positions them on wingtip pylons, separating the rotary-wing function from the fixed-wing airframe. This allows the vertical thrusters to be used only when needed for VTOL operations, and retracted or positioned to minimize drag during high-speed fixed-wing flight, thus resolving the contradiction between adaptability and energy loss.
Solution Approach 2:
The patent implements dynamic positioning of vertical thrusters on movable pylons that can be adjusted during flight. The pylons can be repositioned to optimize aerodynamics at different flight phases, allowing the system to adapt between VTOL and high-speed flight modes, thereby reducing drag losses while maintaining versatility.
2Adaptability or versatility
If helicopters are used for access to difficult locations, then the UAV can reach inaccessible sites, but operating costs increase and operating capabilities are limited
Solution Approach 1:
The patent creates a universal aircraft platform that combines both fixed-wing and rotary-wing capabilities in a single system. The UAV can perform conventional fixed-wing flight for efficient long-range travel and switch to VTOL mode using vertical thrusters for accessing difficult locations, eliminating the need for separate helicopter and fixed-wing aircraft and reducing overall system complexity.
3Productivity
If fixed wing aircraft are used for long-range flight, then operational efficiency is improved, but access to remote and inaccessible areas is limited
Solution Approach 1:
The patent segments the flight mission into distinct phases: long-range efficient transit using fixed-wing mode, and terminal operations in inaccessible areas using VTOL capability. The vertical thrusters and pylons are designed as separate, dedicated components that can be activated only when needed, allowing the aircraft to maintain fixed-wing efficiency for most of the flight while providing helicopter-like access when required.
Data Source
AI summary
The invention relates, generally, to systems and methods for optimizing the performance of an Unmanned Aerial Vehicle (UAV) by optimizing the UAV's drivetrain, extending the UAV's battery life; by monitoring and reporting on payload imbalance or overweight conditions; and by improving the aerodynamics and streamlining of certain drag-producing elements.