Results 11 to 20 of about 292,701 (300)
Sailing with solar and planetary radiation pressure [PDF]
Literature on solar sailing has thus far mostly considered solar radiation pressure (SRP) as the only contribution to sail force. However, considering a sail in a planetary mission scenario, a new contribution can be added. Since the planet itself emits radiation, this generates a radial planetary radiation pressure (PRP) that is also exerted on the ...
De Iuliis, Alessia +3 more
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Three-Axes Attitude Control of Solar Sail Based on Shape Variation of Booms
Actively controlling the attitude of the solar sail is necessary to adjust the solar radiation pressure force for trajectory transfer and orbit control.
Feng Zhang, Shengping Gong, Hexi Baoyin
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Solar radiation pressure on (99942) Apophis [PDF]
Abstract Near-Earth asteroid (99942) Apophis currently resides among the top positions on the list of objects with small, yet non-zero impact probability with the Earth. For that reason an unusual observational and theoretical effort has been dedicated to precisely characterize its future orbit.
J. Žižka, D. Vokrouhlický
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A Study of the Influence of Environmental Factors on Water–Heat Exchange Process in Alpine Wetlands
Wetlands, which are composed of soil, vegetation and water, have sufficient water supply and are sensitive to climate change. This study analyzes the coupling degree between wetlands and atmosphere and discusses the influence of environmental factors ...
Yan Xie +4 more
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Ideal sillenite type Bi12FeO20 (BFO) micron sized single crystals have been successfully grown via inexpensive hydrothermal method. The refined single crystal X-ray diffraction data reveals cubic Bi12FeO20 structure with single crystal parameters ...
Durga Sankar Vavilapalli +8 more
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Orbital dynamics and characterization of space debris via optical observations [PDF]
Studying the long-term dynamical evolution of space debris and the development of optical measurements help us to avoid collision risks caused by these objects.
Hager GHONIEM +4 more
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Solar Radiation Pressure Enabled Femtosatellite-Based Earth Remote Sensing [PDF]
Recent developments in electronics have pushed miniaturised satellites to the femto-scale, with masses between 10 and 100 g. Although femtosatellites have been proven as a feasible concept, most designs are limited in mission capacity and lifetime due to the lack of environmental protection and onboard propellant.
Jianlin Cao +3 more
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Could Solar Radiation Pressure Explain ‘Oumuamua’s Peculiar Acceleration? [PDF]
Abstract ‘Oumuamua (1I/2017 U1) is the first object of interstellar origin observed in the solar system. Recently, Micheli et al. reported that ‘Oumuamua showed deviations from a Keplerian orbit at a high statistical significance. The observed trajectory is best explained by an excess radial acceleration Δa ∝ r −2 ...
Shmuel Bialy, Abraham Loeb
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Theoretical and numerical studies on multi‐physical issues of space parabolic membrane antennas
Front‐fed parabolic reflectors are among the most commonly used antennas in the industry. While in spaceborne applications, membrane reflectors are very promising due to their lightweight and foldable features.
Ming‐Jian Li +3 more
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The aim of this study was to clarify the transpiration water consumption law of apple orchards in the arid oasis area and the driving mechanism of environmental factors on fruit trees, determine the water carrying capacity and formulate an appropriate ...
MA Wentao +5 more
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