Green Flight Times

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This publication is a digest of press releases and other announcements issued by partners across the aviation industry from May October 2011. It is not fully comprehensive, but provides a snapshot of the work being undertaken around the world by all parts of the aviation industry. Readers are encouraged to visit http://newswire.enviro.aero for the latest environmental news. Environmental news from across the aviation industry

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Adaptive Quaternion Attitude Control of Aerodynamic Flight Control Vehicles

Conventional quaternion based methods have been extensively employed for spacecraft attitude control where the aerodynamic forces can be neglected. In the presence of aerodynamic forces, the flight attitude control is more complicated due to aerodynamic moments and inertia uncertainties. In this paper, a robust nero-adaptive quat...

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Advantages of fluorescence over diffuse reflectance measurements tested in phantom experiments with dynamic inflow of ICG

Time−resolved measurements of diffuse reflectance and fluorescence were carried out using phantom with dynamic inflow of indocyanine green (ICG) in tubes located at different depths. Better sensitivity of fluorescence signals related to the inflow of the dye was observed in comparison to simultaneously acquired diffuse reflectance. Obtained results can be referred to re− sults of in−vivo measur...

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Visual constraints in foraging bumblebees: flower size and color affect search time and flight behavior.

In optimal foraging theory, search time is a key variable defining the value of a prey type. But the sensory-perceptual processes that constrain the search for food have rarely been considered. Here we evaluate the flight behavior of bumblebees (Bombus terrestris) searching for artificial flowers of various sizes and colors. When flowers were large, search times correlated well with the color c...

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Microorganisms and plant of Autonomous Biological Systems (ABS) samples.

Distribution of microorganisms and cellular structure of an Autonomous Biological Systems (ABS) were studied with a special attention to the effect of space environments. Viable cell densities measured by the direct fluorescence microscopic method were in the order of 10(5) cells/ml for fractions 1 (upper suspension) and 2 (lower suspension), and 10(6) cells/ml for fraction 3 (sediments). These...

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Pipistrel Taurus G4: on Creation and Evolution of the Winning Aeroplane of NASA Green Flight Challenge

The paper presents the journey of the Pipistrel’s Taurus G4, the World’s first four-seat electric aeroplane and winner of the NASA Green Flight Challenge 2011, sponsored by Google, from idea to completion of competition. At the beginning, the race event and qualification requirements are presented. The selection of the aeroplane’s configuration and sizing is discussed, and emphasis given to the...

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تاریخ انتشار 2011