Results 51 to 60 of about 4,545 (167)

Effect of a splitter plate on the dynamics of a vortex pair [PDF]

open access: yes, 2011
An experimental and numerical study was performed to investigate and compare the behavior of a counter-rotating vortex pair and a single vortex in the vicinity of a wall.
Blanquart, Guillaume   +2 more
core   +2 more sources

Installation Effects of a Propeller Mounted on a High-Lift Wing with a Coanda Flap. Part I: Aeroacoustic Experiments [PDF]

open access: yes, 2014
In this contribution, we present aeroacoustic experiments concerning installation effects of propellers. Such installation effects are important as they can significantly alter the sound radiation as compared to an isolated propeller.
Akkermans, Rinie, A.D.   +4 more
core   +1 more source

Etude numérique des gains de performances et de capacité d'aspiration apportés par un étage axial contra-rotatif par rapport à une pompe mono-rotor. [PDF]

open access: yes, 2013
This study deals with the development of an efficient method of design for subsonic conter-rotating axial flow turbomachineries. From specifications of a reference axial pump with only one rotor, two configurations of counter-rotating systems are studied
BAKIR, Farid   +3 more
core   +3 more sources

Advanced propfan analysis for the family of commuter airplanes [PDF]

open access: yes
Advanced propfans were selected to be used throughout the family of commuters. These propulsion systems offer a 25 to 28 percent fuel savings over comparably sized turbofans operating in the 1990s.
Creighton, Tom   +6 more
core   +1 more source

Fan blade protection system [PDF]

open access: yes, 1993
In one type of aircraft propulsion system, propeller blades are mounted on a ring which surrounds a turbine. An annular space exists between the turbine and the ring. If a propeller blade should break free, the unbalanced centrifugal load tends to deform
Hauser, Ambrose A.   +2 more
core   +1 more source

Theory of commensurable magnetic structures in holmium

open access: yes, 1996
The tendency for the period of the helically ordered moments in holmium to lock into values which are commensurable with the lattice is studied theoretically as a function of temperature and magnetic field.
A. B. Harris   +59 more
core   +2 more sources

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