Tail-Sitter UAV Control Using Nozzles and Rudder Surfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vertical take-off and landing technologies for unmanned aerial vehicles (UAVs) face challenges in combining the advantages of helicopters and fixed-wing aircraft, such as increased resistance, radar reflection cross-section, and complex control systems, making them inefficient and difficult to popularize for complex environments like sea and mountainous areas.
Innovation Solution
A tailstock type UAV with coordinated control among an attitude adjustment nozzle, engine, aerodynamic rudder surface, and landing gear, allowing for vertical take-off and landing, and high-speed cruising, utilizing a fuselage with independent stabilizing planes, foldable wings and empennages, and a composite control method combining aerodynamic, vector, and reaction thrusts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tilt rotor technology is used to achieve vertical take-off and landing and high-speed cruising, then the advantages of both helicopter and fixed-wing aircraft are combined, but the complexity of the wing surface and tilting mechanism increases resistance and radar reflection cross-section
Solution Approach 1:
The aircraft is divided into distinct functional segments: a fixed-wing body for high-speed cruising, a tilt-rotor mechanism for mode conversion, and a tailstock landing gear for vertical landing. This segmentation allows each component to be optimized independently, reducing overall system complexity while maintaining versatility.
Solution Approach 2:
The patent employs a dynamic tilt-rotor mechanism that can change the orientation of rotors between vertical and horizontal positions. This dynamic adjustment enables the aircraft to switch between helicopter-like vertical take-off mode and fixed-wing high-speed cruising mode, combining advantages of both configurations without requiring permanent complex structures.
2Adaptability or versatility
If tilt rotor technology is used to achieve vertical take-off and landing and high-speed cruising, then the advantages of both helicopter and fixed-wing aircraft are combined, but the radar reflection cross section increases
Solution Approach 1:
The patent applies local quality optimization by designing the tilt-rotor mechanism and wing surfaces with radar-absorbing materials and stealth-oriented geometries in critical areas. The tailstock landing gear configuration and empennage design also incorporate low-observable features to minimize radar reflection cross-section while maintaining vertical landing capability.
3Adaptability or versatility
If engine vector nozzles and lift fans are used to achieve vertical take-off and landing, then vertical take-off capability is achieved, but the control system becomes complicated and the dedicated lift fans occupy larger space and specific gravity
Solution Approach 1:
The patent employs a universal tailstock landing gear system that serves multiple functions: supporting vertical landings, providing stability during hover, and assisting in attitude control. This multi-functional design eliminates the need for dedicated lift fans and complex vector nozzle systems, reducing both space occupation and control system complexity while maintaining vertical take-off and landing capability.
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 safe and efficient vertical take-off and landing in complex environments by minimizing wind disturbance, improving stability, and providing a flexible control system for both vertical and high-speed operations.
Implementation Method 1
the attitude adjustment nozzle is composed of a plurality of nozzles, which are distributed on the outer surface of the front of the fuselage, are away from the center of gravity of the unmanned aerial vehicle, and can spray gas outward to generate thrust and a rotation torque
Implementation Method 2
the engine is arranged at the tail of the fuselage for producing forward thrust
Implementation Method 3
a control method combining aerodynamic, vector, and reaction thrusts
Data Source
AI summary
Provided is a tailstock type vertical take-off and landing unmanned aerial vehicle and a control method thereof. The unmanned aerial vehicle is mainly composed of a fuselage, wings, ailerons, empennages, an elevator, a rudder, an engine, an attitude adjustment nozzle, a landing gear, and the like. The wings are symmetrically arranged on both sides of the middle of the fuselage; the ailerons are hinged to the trailing edges of the wings on the both sides; the empennages are located at the tail of the fuselage, and a form of vertical empennages+horizontal empennages or V-shaped empennages can be used; the elevator and rudder are hinged to the trailing edges of the empennages; the engine is arranged at the tail of the fuselage for producing main thrust.