Results 1 to 10 of about 9,716 (286)

Control System for Vertical Take-Off and Landing Vehicle’s Adaptive Landing Based on Multi-Sensor Data Fusion [PDF]

open access: yesSensors, 2020
Vertical take-off and landing unmanned aerial vehicles (VTOL UAV) are widely used in various fields because of their stable flight, easy operation, and low requirements for take-off and landing environments.
Dan Zhang, Zhongxue Gan, Hongyan Tang
exaly   +5 more sources

Development and challenges of autonomous electric vertical take-off and landing aircraft [PDF]

open access: yesHeliyon
Urban Air Transportation (UAT) encompasses private aircraft, air taxis, and specialized missions. These missions include aerial sightseeing, logistics transportation, emergency response, and anti-terrorism operations.
Lijuan Hu, Xufei Yan, Ye Yuan
doaj   +4 more sources

An Innovation Management Approach for Electric Vertical Take-Off and Landing

open access: yesSustainability
With more companies entering the realm of electric vertical take-off and landing (eVTOL), and governments enacting policies to support the development of low-altitude economies, the commercial potential of eVTOL is being recognized by the public. However, true commercialization is still a long way off.
Tingyou LI, Luyi Shen, Xia Xu
exaly   +2 more sources

Asymmetries of Force and Power During Single-Leg Counter Movement Jump in Young Adult Females and Males [PDF]

open access: yesSensors
Background/Objectives: Inter-limb asymmetry of a given variable for vertical jumps is commonly assessed in both healthy individuals and those undergoing rehabilitation post-injury. The aim of this study was to compare the asymmetry index between the take-
Jarosław Kabaciński   +3 more
doaj   +2 more sources

Jumping with adhesion: landing surface incline alters impact force and body kinematics in crested geckos

open access: yesScientific Reports, 2021
Arboreal habitats are characterized by a complex three-dimensional array of branches that vary in numerous characteristics, including incline, compliance, roughness, and diameter. Gaps must often be crossed, and this is frequently accomplished by leaping.
Timothy E. Higham   +4 more
doaj   +1 more source

Multi-Phase Vertical Take-Off and Landing Trajectory Optimization with Feasible Initial Guesses

open access: yesAerospace, 2023
The advancement of electric vertical take-off and landing (eVTOL) aircraft has expanded the horizon of urban air mobility. However, the challenge of generating precise vertical take-off and landing (VTOL) trajectories that comply with airworthiness ...
Zhidong Lu   +2 more
doaj   +1 more source

Design and performance analyses of a fixed wing battery VTOL UAV

open access: yesEngineering Science and Technology, an International Journal, 2020
The objective of this paper is to explain the design steps and performance analyses including energy consumption of a fixed-wing (FW) vertical take-off and landing (VTOL) unmanned air vehicle (UAV).
Özgür Dündar   +2 more
doaj   +1 more source

Study on the Engagement Characteristics and Control Strategy of High Speed Difference Dry Friction Clutch

open access: yesMachines, 2023
In the short/vertical take-off and landing aircraft propulsion system, the vertical take-off/landing and rapid flight are switched through the engagement and disconnection of the dry friction clutch. The smooth and rapid connection of the friction clutch
Chu Zhu   +3 more
doaj   +1 more source

An Efficient Approach for Modeling and Control of a Quadrotor

open access: yesWasit Journal of Engineering Sciences, 2016
 A quadrotor is a four-rotor aircraft capable of vertical take-off and landing, hovering, forward flight, and having great maneuverability. Its platform can be made in a small size make it convenient for indoor applications as well as for outdoor uses ...
Ahmed S. Khusheef
doaj   +1 more source

Research on AUV underwater landing strategy based on variable buoyancy system

open access: yesZhongguo Jianchuan Yanjiu, 2018
[Objectives] The underwater landing of an Autonomous Underwater Vehicle(AUV)is a way to achieve underwater long-term latency and fixed-point observation which is conductive to the better control of changes in the marine environment.[Methods] This paper ...
SUN Qinggang   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy