Results 11 to 20 of about 558,955 (240)

Acceleration Schedule of Air‑Driving Ducted Fan Propulsion System

open access: yesNanjing Hangkong Hangtian Daxue Xuebao
The air-driving ducted fan propulsion system is a new design for vertical takeoff and landing power systems which consists of a turbofan engine and an air-driving ducted fan. The air-driving ducted fan is driven by the air intake of the turbofan’s bypass,
LEI Junhao, HUANG Xianghua
doaj   +2 more sources

Optimized Matching Lift Unit Transmission Ratio of Engine Driven Ducted Fan

open access: yesMATEC Web of Conferences, 2018
As a kind of VTOL technology, ducted fan is not only used by many kinds of aircrafts, but also one of the trends of the future aircraft lift system, and attracts more and more attention. For an engine driven ducted fan lift unit, involving the engine and
Xiao Senlin   +6 more
doaj   +3 more sources

Design and Experiment on Heat Dissipation Structures of Ducted Fan Motor for Flying Electric Vehicle

open access: yesWorld Electric Vehicle Journal
Ducted fan motors play a crucial role in promoting various applications of flying electric vehicles. In ducted fan motor systems, motor performance affects the speed of the fan, the flow field of the fan affects the thermal field of the motor, and the ...
Ye Li   +4 more
doaj   +2 more sources

Lift–Thrust Integrated Ducted-Grid Fusion Configuration Design for a Ducted Fan Tail-Sitter UAV

open access: yesApplied Sciences
A new lift enhancement scheme is designed for the cruise flight process of a tail-sitter UAV (Unmanned Aerial Vehicle), proposing a fusion configuration with embedded grid channels on the duct wall. The low pressure zone at the lip of the duct is induced
Lei Liu, Baigang Mi
doaj   +2 more sources

A ducted wind turbine simulation model for building simulation [PDF]

open access: yes, 2004
Power production is shifting away from centralized generation plants to production of heat and power at the point of demand. A technology that may play a part in this shift is the ducted wind turbine (DWT).
Kelly, N.J., Grant, A.D.
core   +4 more sources

Urban wind energy conversion: the potential of ducted turbines [PDF]

open access: yes, 2008
The prospects for urban wind power are discussed. A roof-mounted ducted wind turbine, which uses pressure differentials created by wind flow around a building, is proposed as an alternative to more conventional approaches.
Kelly, Nick   +2 more
core   +4 more sources

A Study on Hover Performance of Ducted Fans for an Unmanned VTOL Aircraft

open access: yesInternational Journal of Aerospace Engineering, 2022
In this study, ground tests and numerical analysis were performed to verify the hover performance of the second ducted fan model designed by this research team.
Young Jae Choi   +2 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

Effect of inlet distortion with crosswind on aircraft-engine intake aerodynamic performance

open access: yesNihon Kikai Gakkai ronbunshu, 2022
This paper describes an experimental study on inlet distortion in the flow ingested to an intake of a ducted fan. Recent high bypass ratio engines tend to shorten the nacelle length for better fuel consumption.
Hiroki NARUSE   +7 more
doaj   +1 more source

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