Results 11 to 20 of about 5,875,132 (282)

Interactional aerodynamics and acoustics of a hingeless coaxial helicopter with an auxiliary propeller in forward flight [PDF]

open access: yes, 2008
The aerodynamics and acoustics of a generic coaxial helicopter with a stiff main rotor system and a tail- mounted propulsor are investigated using Brown's Vorticity Transport Model.
Brown, R.E.   +7 more
core   +10 more sources

The influence of Blade Chord on the Aerodynamics and Performance of Vertical Axis Wind Turbines [PDF]

open access: yes, 2013
The climate change due to emissions from the combustion of fossil fuel to meet the ever increasing energy demands of the growing world population has roused the attention of governments and individuals to protect the environment.
Eboibi, Okeoghene
core   +6 more sources

Numerical study of the unsteady aerodynamics of helicopter rotor aerofoils

open access: yes, 1999
A two-dimensional model of the aerodynamics of rotor blades in forward flight is proposed in which the motion of the blade is represented by periodical variations of the freestrearn velocity and incidence. A novel implicit methodology for the solution
Shaw, Scott
core   +7 more sources

Modelling the aerodynamics of coaxial helicopters : from an isolated rotor to a complete aircraft [PDF]

open access: yes, 2008
This paper provides an overview of recent research on the aerodynamics of coaxial rotors at the Rotorcraft Aeromechanics Laboratory of the Glasgow University Rotorcraft Laboratories.
Brown, Richard E., Kim, Hyo Won
core   +4 more sources

Experimental Assessment of Aero-Propulsive Effects on a Large Turboprop Aircraft with Rear-Engine Installation

open access: yesAerospace, 2023
This paper deals with the estimation of propulsive effects for a three-lifting surface turboprop aircraft concept, with rear engine installation at the horizontal tail tips, conceived to carry up to 130 passengers.
Salvatore Corcione   +3 more
doaj   +1 more source

Experimental and numerical research of the influence of thrust vector control on the missile aerodynamics by cold and hot jet simulations [PDF]

open access: yesFME Transactions, 2020
The flow field phenomena that occur as a result of thrust vector control (TVC) system activity on a missile with lateral jets are very complex and influence all other components of the missile.
Ocokoljić Goran   +3 more
doaj  

Aerodynamic testing model guided missiles with jets simulations in the T-35 wind tunnel [PDF]

open access: yesTehnika, 2014
Testing of the Anti-Tank Missile with jets simulations in the T-35 wind tunnel is part of the development program of short range anti-tank system. The main task of this experiment was to provide an experimental data base for estimation of real jets ...
Ocokoljić Goran J., Rašuo Boško P.
doaj   +1 more source

Unsteady flow behaviour of multi-rotors in ground proximity

open access: yesFlow, 2023
The unsteady flow behaviour of two side-by-side rotors in ground proximity is experimentally investigated. The rotors induce a velocity distribution interacting with the ground causing the radial expansion of the rotor wakes.
Hasse N.J. Dekker   +4 more
doaj   +1 more source

On the use of load-transformation matrices when working with internal wind tunnel balances [PDF]

open access: yesFME Transactions, 2015
Internal wind tunnel balances are often classified by the design as 'force', 'moment' or 'direct-read' balances. Only the direct-read balances can immediately yield the total loads; with other designs, balance-type-specific transformations of actually ...
Vuković Đorđe, Damljanović Dijana
doaj  

An experimental study of unsteady vehicle aerodynamics [PDF]

open access: yesProceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2001
The transient response of a vehicle to a wind disturbance is of importance to car drivers since low level inputs can result in poor vehicle refinement, and extreme effects can result in path deviation. This paper investigates the use of an oscillating aerofoil gust generator to simulate the transient aerodynamic effects produced on
M. A. Passmore, S Richardson, A Imam
openaire   +1 more source

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