Results 31 to 40 of about 90,052 (317)
Advanced Science, EarlyView.Precipitation‐modulated recrystallization enables a programmable bimodal harmonic architecture in a high‐entropy alloy, delivering 1–2 GPa yield strength with >10% ductility from −196 °C to 700 °C. The resulting broad‐temperature robustness arises from the synergy of dual‐mode nanoprecipitation, harmonic core–shell topology, and temperature‐adaptive ...
Wei Li +5 more
wiley +1 more source
Design of Temperature Fluctuation Test Platform Based on Radiation Heat Transfer
MATEC Web of Conferences, 2019 The optical characteristics of the space science detectors are very sensitive to the temperature fluctuation. In order to study the effect of it, a method to simulate the temperature fluctuation was put forward in this paper, and the feasibility of this ...
Xiao Han +3 more
doaj +1 more source
Back projection algorithm-based GEO SAR real-time quick Look imaging system
The Journal of Engineering, 2019 Geosynchronous earth orbit synthetic aperture radar (GEO SAR) has the advantages of short revisit period and wide observation range. However, compared with low earth orbit SAR (LEO SAR), GEO SAR has the distinct characteristics of long synthetic aperture
Qingjun Zhang +6 more
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Pattern transition in spacecraft formation flying using bifurcating potential field
, 2012 Many new and exciting space mission concepts have developed around spacecraft formation flying, allowing for autonomous distributed systems that can be robust, scalable and flexible.
Derek J. Bennet +5 more
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Ultra‐Low Intensity Continuous Wave Laser Ablation Propulsion With Graphene‐Engineered Wood
Advanced Science, EarlyView.Graphene delignified wood converts continuous wave laser energy into thrust. Laser propulsion experiments in vacuum reveal the lowest laser ablation threshold intensities and the greatest density‐normalized specific impulse in literature. The results highlight graphene delignified wood as a potential efficient, sustainable, strong, and lightweight ...
Afnan S. M. Elmubasher +10 more
wiley +1 more source
MATEC Web of Conferences, 2016 In order to implement spacecraft assembly based on MBD, this article proposes a method to construct data-package automatically based on 3D model. First, an Assembly Digital Mock-up (ADMU) is constructed.
Wan Bi Le, Chen Chang Yu, He Wen Xing
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Application of Constraint Dynamics for Spacecraft Maneuver [PDF]
, 1994 The article of record as published may be found at http://dx.doi.org/10.2514/6.1994-3625A new approach for spacecraft maneuver based upon constraint dynamics and tracking control laws is presented in this paper. For high precision pointing requirement on
Hyochoong Bang +3 more
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Advanced Science, EarlyView.ABSTRACT To confront extreme space environments, a combination of inorganic and organic coatings can provide a pathway for offering highly durable radiation resistance and anti‐friction simultaneously. Herein, a strong interfacial 3D hydrogen‐bonding network is designed to create robust hexagonal boron nitride (h‐BN) based polymer coatings with ...
Zhuoyi Li +7 more
wiley +1 more source
Research on Torque Loading Technology Based on L Lever in Spacecraft Bolt
MATEC Web of Conferences, 2015 As the main form of structure assembly, the stability of bolt joint is directly related to the performance of spacecraft. This essay is used to analyze the cause of standard torque spanner which is not suitable to the tightening torque and summarized ...
Song Xiaohui, Liu Zhibin, Liu Zhe
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