Results 21 to 30 of about 1,794,273 (287)

Aero-Propulsive Interactions between UAV Wing and Distributed Propellers Due to Their Relative Position

open access: yesDrones, 2023
The purpose of this paper is the evaluation of the aero-propulsive effects on a UAV wing model with distributed propulsion. An array of three propellers is placed ahead of the leading edge of a rectangular wing with flap.
Danilo Ciliberti   +3 more
doaj   +1 more source

Aerodynamics and Power Balance of a Distributed Aft-Fuselage Boundary Layer Ingesting Aircraft

open access: yesAerospace, 2023
This paper presents a first investigation into the aerodynamics and performance breakdown of a distributed aft-fuselage boundary layer ingesting (BLI) tube-and-wing aircraft using fully coupled Unsteady Reynolds-Averaged Navier-Stokes (URANS ...
Tze Sing Tse, Cesare A. Hall
doaj   +1 more source

Untethered Flight of a 270 mg Microrobot Powered by Onboard Energy

open access: yesAdvanced Intelligent Systems, 2023
It is challenging for microrobots to fly using onboard energy due to the relatively heavy power supplies and inefficient actuators that are limited to a small size (mass less than 1000 mg and wingspan less than 100 mm).
RuiDe Yun   +7 more
doaj   +1 more source

A contribution to the investigation of acoustic interferences in aircraft distributed propulsion [PDF]

open access: yesCEAS Aeronautical Journal, 2023
AbstractThe objective of this work is to better understand the acoustic interferences created by distributed propulsion engines based on an approach that combines RANS simulation results for the aerodynamic prediction and analytical models to calculate acoustics. A multi-propeller configuration without wing is considered for this investigation.
Sébastien Guérin, Damiano Tormen
openaire   +1 more source

A Thrust Cooperative Control Strategy of Multiple Propulsion Motors for Distributed Electric Propulsion Aircraft

open access: yesWorld Electric Vehicle Journal, 2021
This paper presents a thrust cooperative control strategy of multiple propulsion motors for distributed electric propulsion aircraft. The control strategy can keep the propulsion motors running synchronously when the aircraft is flying in a straight line;
Luhui Weng   +4 more
doaj   +1 more source

Traction Amplified Actuation System for Inspecting Narrow and Complex Pipes Using Enhanced Linear Antagonistic Mechanism-Bend Pipe Passage Model and Force Comparison

open access: yesIEEE Access, 2023
This paper describes the design, experiments, and quantitative force comparison of a Pipe Inspection RObot named PI-RO II using the enhanced linear antagonistic mechanism to amplify the traction.
F. Ito   +4 more
doaj   +1 more source

Influences of distributed propulsion system parameters on aerodynamic characteristics of a BLI-BWB UAV

open access: yesXibei Gongye Daxue Xuebao, 2021
Focusing on the aerodynamic characteristics of the blended wing body (BWB) aircraft with boundary layer ingestion(BLI) distributed propulsion system; the influences of propulsion system parameters under the condition of cruise and takeoff are studied ...

doaj   +1 more source

Modelling & integration of advanced propulsion systems [PDF]

open access: yes, 2008
This research study focuses on the design of advanced propulsion cycles, having as primary design goal the improvement on noise emissions and fuel consumption.
Doulgeris, Georgios C.
core   +5 more sources

Modeling and Control of Distributed-Propulsion eVTOL UAV Hovering Flight

open access: yesVehicles
For vertical takeoff and landing (VTOL) control of distributed-propulsion, fixed-wing UAVs exhibiting strong nonlinearity and aerodynamic/propulsive coupling, traditional linearization methods incur significant modeling errors in pitch–roll coupling and ...
Qingfeng Zhao   +3 more
doaj   +1 more source

Impact of propeller arrangement on aerodynamic performance for a high-lift distributed propulsion system

open access: yesEngineering Applications of Computational Fluid Mechanics
Distributed electric propulsion is an emerging research topic, with a key advantage being its potential for enhanced lift performance through aerodynamic propeller-wing interactions.
Suqi Chen, Zheng Guo, Duoneng Liu
doaj   +1 more source

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