Results 91 to 100 of about 455,998 (205)

Time and Energy Managed Operations (TEMO): Cessna Citation II Flight Trials [PDF]

open access: yes, 2016
From 9-26 October 2015 the Netherlands Aerospace Centre (NLR) in cooperation with Delft University of Technology (DUT) has executed Clean Sky flight trials with the Cessna Citation II research aircraft.
Bussink, Frank   +3 more
core  

The VLA Low-frequency Sky Survey

open access: yes, 2007
The Very Large Array (VLA) Low-frequency Sky Survey (VLSS) has imaged 95% of the 3*pi sr of sky north of declination = -30 degrees at a frequency of 74 MHz (4 meter wavelength). The resolution is 80" (FWHM) throughout, and the typical RMS noise level is ~
A. S. Cohen   +16 more
core   +1 more source

Parametric high resolution techniques for radio astronomical imaging

open access: yes, 2008
The increased sensitivity of future radio telescopes will result in requirements for higher dynamic range within the image as well as better resolution and immunity to interference.
Ben-David, Chen, Leshem, Amir
core   +2 more sources

Design challenge of a new monolithic concept for the main landing gear bay of a large passenger aircraft

open access: yesMATEC Web of Conferences, 2018
In this paper, ITEMB team in the contest of the Clean Sky 2 framework, with the scope of a new architecture for the Main Landing Gear of a single isle aircraft type, presents its development in designing the two major item of the Main Landing Gear Bay ...
Cerreta Pietro   +3 more
doaj   +1 more source

The non-coplanar baselines effect in radio interferometry: The W-Projection algorithm

open access: yes, 2008
We consider a troublesome form of non-isoplanatism in synthesis radio telescopes: non-coplanar baselines. We present a novel interpretation of the non-coplanar baselines effect as being due to differential Fresnel diffraction in the neighborhood of the ...
Bhatnagar, S.   +2 more
core   +1 more source

Insights into impact simulation and fatigue analysis of thermoplastically jointed lapshear specimens

open access: yesCEAS Aeronautical Journal
The development process of an aircraft fuselage today shows a complex workflow from the first concept phase to the actual operational phase. On one hand, this has a direct impact on the efficiency of both the short-term ramp-up of aircraft production and
J. Kreikemeier   +2 more
semanticscholar   +1 more source

Electromechanical Actuation for Morphing Winglets

open access: yesActuators, 2019
As a key enabler for future aviation technology, the use of servo electromechanical actuation offers new opportunities to transition innovative structural concepts, such as biomimicry morphing structures, from basic research to new commercial aircraft ...
Ignazio Dimino   +3 more
doaj   +1 more source

A new line on the wide binary test of gravity

open access: yes, 2019
The relative velocity distribution of wide binary (WB) stars is sensitive to the law of gravity at the low accelerations typical of galactic outskirts. I consider the feasibility of this wide binary test using the `line velocity' method.
Banik, Indranil
core   +1 more source

DLR TAU-Code uRANS Turbofan Modeling for Aircraft Aerodynamics Investigations

open access: yesAerospace, 2019
In the context of an increased focus on fuel efficiency and environmental impact, turbofan engine developments continue towards larger bypass ratio engine designs, with Ultra-High Bypass Ratio (UHBR) engines becoming a likely power plant option for ...
Arne Stuermer
doaj   +1 more source

Star-galaxy separation strategies for WISE-2MASS all-sky infrared galaxy catalogs

open access: yes, 2015
We combine photometric information of the WISE and 2MASS all-sky infrared databases, and demonstrate how to produce clean and complete galaxy catalogs for future analyses.
Kovács, András, Szapudi, István
core   +1 more source

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