Results 21 to 30 of about 13,806 (183)

Global configuration stabilization for the VTOL aircraft with strong input coupling [PDF]

open access: yes, 2002
Trajectory tracking and configuration stabilization for the vertical takeoff and landing (VTOL) aircraft has been so far considered in the literature only in the presence of a slight (or zero) input coupling (i.e., for a small ε). In this paper, our main
Olfati-Saber, Reza
core   +2 more sources

Study on Aerodynamic Characteristics of Tilting Wing Aircraft Considering Propeller Interference

open access: yesHangkong gongcheng jinzhan, 2019
Tilting wing aircraft not only has the ability of vertical take-off and landing like helicopter, but also be provided with high speed cruise capability as traditional fixed-wing aircraft.Tilting wing aircraft is one of the hot spots of research in both ...
Wei Wei   +3 more
doaj   +1 more source

A Small UAV Optimized for Efficient Long-Range and VTOL Missions: An Experimental Tandem-Wing Quadplane Drone

open access: yesApplied Sciences, 2022
Most types of Unmanned Aerial Vehicle (UAV, drone) missions requiring Vertical-Take-Off-and-Landing (VTOL) capability could benefit if a drone’s effective range could be extended.
Michał Okulski, Maciej Ławryńczuk
doaj   +1 more source

Optimal design of Vertical-Taking-Off-and-Landing UAV wing using multilevel approach

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization, 2020
In order to overcome the propre disadvantages of FW(Fixed-Wing) and VTOL(Vertical-Taking-Off-and-Landing) UAV (Unmanned Aerial Vehicle) and extend its application, the hybrid drone is invested more in recent years by researchers and several ...
Yue Hao   +4 more
doaj   +1 more source

The new Turbo Wing – TW propulsion for VTOL aircraft [PDF]

open access: yesINCAS Bulletin
This paper relates about to a new class of propulsion systems named Turbo Wing- TW for VTOL aircraft (including civil and military drones). The idea behind this concept is to fully integrate a propulsion system into a wing structure, so that the aircraft
Liviu Grigorian GIURCA
doaj   +1 more source

Research on Dynamic Modeling and Transition Flight Strategy of VTOL UAV

open access: yesApplied Sciences, 2019
A vertical take-off and landing (VTOL) unmanned aerial vehicle (UAV) can meet both VTOL and horizontal flight performance, but how to achieve a safe and stable transition is a research focus of this type of aircraft.
Chunyang Wang, Zhou Zhou, Rui Wang
doaj   +1 more source

Performance Analysis of Empennage Configurations on a Surveillance and Monitoring Mission of a VTOL-Plane UAV Using a Computational Fluid Dynamics Simulation

open access: yesAerospace, 2022
A Vertical Take-Off and Landing-Plane (VTOL-Plane) is an Unmanned Aerial Vehicle (UAV) that combines multirotor and fixed-wing configurations. It has a good cruise range compared to a VTOL vehicle. Furthermore, it can take-off and land vertically.
Gesang Nugroho   +2 more
doaj   +1 more source

DESIGN AND EXPERIMENT OF A HIGH PAYLOAD FIXED WING VTOL UAV SYSTEM FOR EMERGENCY RESPONSE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
With the development of UAV technologies, the advantages of hybrid VTOL UAV have been realized and taken in emergency response. But, former hybrid VTOL UAV is lack of capacities on payload and endurance, which restrict the integration of multiple sensors.
H. Wu   +6 more
doaj   +1 more source

VTOL site location considering obstacle clearance during approach and departure

open access: yesCommunications in Transportation Research
Urban air mobility (UAM) extends urban transportation to low-altitude airspace using electric vertical take-off and landing (eVTOL) vehicle to reduce traffic congestion. The vertical take-off and landing (VTOL) site connecting ground and air transport is
Chenhao Guo   +5 more
doaj   +1 more source

Assessing the Behavioural Responses of Small Cetaceans to Unmanned Aerial Vehicles

open access: yesRemote Sensing, 2021
Unmanned Aerial Vehicles (UAVs), or drones, have recently emerged as a relatively affordable and accessible method for studying wildlife. Vertical Take-off and Landing (VTOL) UAVs are appropriate for morphometric, behavioural, abundance and demographic ...
Joana Castro   +5 more
doaj   +1 more source

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