Results 11 to 20 of about 292,701 (300)

Sailing with solar and planetary radiation pressure [PDF]

open access: yesAdvances in Space Research, 2021
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
openaire   +6 more sources

Three-Axes Attitude Control of Solar Sail Based on Shape Variation of Booms

open access: yesAerospace, 2021
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
doaj   +1 more source

Solar radiation pressure on (99942) Apophis [PDF]

open access: yesIcarus, 2011
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
openaire   +1 more source

A Study of the Influence of Environmental Factors on Water–Heat Exchange Process in Alpine Wetlands

open access: yesAtmosphere, 2023
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
doaj   +1 more source

Growth of sillenite Bi12FeO20 single crystals: structural, thermal, optical, photocatalytic features and first principle calculations

open access: yesScientific Reports, 2020
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
doaj   +1 more source

Orbital dynamics and characterization of space debris via optical observations [PDF]

open access: yesINCAS Bulletin, 2023
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
doaj   +1 more source

Solar Radiation Pressure Enabled Femtosatellite-Based Earth Remote Sensing [PDF]

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2020
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
openaire   +3 more sources

Could Solar Radiation Pressure Explain ‘Oumuamua’s Peculiar Acceleration? [PDF]

open access: yesThe Astrophysical Journal Letters, 2018
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
openaire   +2 more sources

Theoretical and numerical studies on multi‐physical issues of space parabolic membrane antennas

open access: yesIET Microwaves, Antennas & Propagation, 2021
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
doaj   +1 more source

Stemflow dynamics of Fuji apple trunk sap in arid oasis area and its response to environmental factors

open access: yes浙江大学学报. 农业与生命科学版, 2020
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
doaj   +1 more source

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