Transition characteristics for a small tail-sitter unmanned aerial vehicle

Zhong, Jingyang; Wang, Chen

doi:10.1016/j.cja.2020.12.021

Cited by 14 publications

(7 citation statements)

References 28 publications

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“…The essential governing equations in the hovering flight mode are already covered in the above aerodynamic equations section, which can be expressed using equation (24).…”

Section: Different Forces Exerted By Aircraftmentioning

confidence: 99%

“…The mechanical orientation of fixed-wing vertical takeoff and landing unmanned aerial vehicles (UAVs) can be classified into three main groups: tail-sitter, tilt-rotor [21], and tilt-wing, as identified by more various authors [22][23][24][25]. Tail-sitter UAVs are VTOL UAVs that adopt a vertical position during takeoff and switch to a fixed-wing configuration during normal flight (see figure 1(C)).…”

Section: Introductionmentioning

confidence: 99%

“…One notable drawback is the relatively long transition time during the switch between vertical and forward flight modes. This transition period not only consumes time but also poses challenges in maintaining stability and control [28]. The large radius of curvature observed during the transition further contributes to the increased time required, hindering the overall operational efficiency of tail-sitter UAVs.…”

Section: Introductionmentioning

confidence: 99%

“…Among the diverse landscape of VTOL UAVs, tilt-wing configurations (show in figure 1(A)) offer a tantalizing blend of agility and efficiency [28]. Unlike tail-sitters or tilt-rotors, tilt-wing UAVs maintain a fixed fuselage throughout their flight envelope, with wings rotating to either a vertical or horizontal position [13].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Aerodynamic modeling and performance analysis of model predictive controller for fixed wing vertical takeoff and landing unmanned aerial vehicle

Getachew,

Zeleke

2024

Eng. Res. Express

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TThis research focuses mainly on the aerodynamic modelling and performance analysis of a model predictive controller for a hybrid fixed-wing vertical takeoff and landing of unmanned aerial vehicle. The aerodynamics, which comprises several aerodynamic characteristics including the lift, drag, and thrust coefficients, is modelled using Newton's second law of motion. The force and moment equations were obtained, and they were then converted into matrix and state equation form, together with the transformation matrices. The essential equations with six degrees of freedom (6 DoF) and 12 state matrices including the control input and manipulating variables were obtained. The proposed model predictive controller (MPC) was designed using the optimal model predictive controller design parameters, such as a sampling time of 0.1, a prediction horizon of 15, a control horizon of 3 and additional controller settings. With a settling period of 3 seconds, an overshoot of 0.5865, and a steady state inaccuracy of 0.00785, the MATLAB simulation demonstrates that the system variables, including roll, pitch, and yaw, are stabilized. This MPC control is more effective in anticipating and optimizing the UAV than other control strategies. Eventually, the controller's simulation on MATLAB Simulink demonstrates the controller's ability to stabilize and control the system in a real-time application. Autonomous vertical takeoff and landing operations depend heavily on the mathematical model and architecture of the flight controller. Among the uses are inspection, monitoring, and rescue.

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“…The essential governing equations in the hovering flight mode are already covered in the above aerodynamic equations section, which can be expressed using equation (24).…”

Section: Different Forces Exerted By Aircraftmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Aerodynamic modeling and performance analysis of model predictive controller for fixed wing vertical takeoff and landing unmanned aerial vehicle

Getachew,

Zeleke

2024

Eng. Res. Express

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“…Over the last five years, many hybrid VTOL structures have been created [13][14][15][16]. One of them is Tiltrotor [17][18][19][20], where multiple rotors are mounted on rotating shafts or nacelles.…”

Section: Introductionmentioning

confidence: 99%

Development of Airframe for Unmanned VTOL Flying Platform

Sundar¹,

Kuppusamy²,

Kugharaja³

2022

ECS Trans.

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A challenging issue associated with fixed wing Unmanned Aerial Vehicles (UAVs) is that these vehicles are often not appropriate for operating effectively in limited airspace. This problem emerges especially in urban environment where the usage of a runway is not possible, and UAVs usually have to fly at a relatively low speed and altitude. The development of a vertical take-off and landing (VTOL) fixed-wing plane is a promising trend which hopefully will solve this issue. This project aims to address difficulties relating to reconnaissance and surveillance for military and civilian applications. The design concept simplifies tilt-rotor systems by using only the control fins to shift from horizontal to vertical flight and vice-versa, allowing the motor/rotor elements to be fixed. All the basic maneuvering of the aircraft is handled by the control surfaces of the airframe. The system consists of one wing with two motors and two elevons creating a tractor configuration airframe. The active flow over the surfaces assists in VTOL and allows the aircraft to seamlessly carry out vertical flight, such as hovering, and offer maneuverability at slow speeds during horizontal flight.

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A multi-strategy pigeon-inspired optimization approach to active disturbance rejection control parameters tuning for vertical take-off and landing fixed-wing UAV

Duan

2022

Chinese Journal of Aeronautics

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Transition characteristics for a small tail-sitter unmanned aerial vehicle

Cited by 14 publications

References 28 publications

Aerodynamic modeling and performance analysis of model predictive controller for fixed wing vertical takeoff and landing unmanned aerial vehicle

Aerodynamic modeling and performance analysis of model predictive controller for fixed wing vertical takeoff and landing unmanned aerial vehicle

Development of Airframe for Unmanned VTOL Flying Platform

A multi-strategy pigeon-inspired optimization approach to active disturbance rejection control parameters tuning for vertical take-off and landing fixed-wing UAV

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