scholarly journals Observation analysis of wind climate in China for 1971–2017 under the demand of solar energy evaluation and utilization

2021 ◽  
Vol 7 ◽  
pp. 3535-3546
Author(s):  
Zhenyu Li ◽  
Zi-niu Xiao ◽  
Chong-wei Zheng
2019 ◽  
Vol 136 ◽  
pp. 1130-1146 ◽  
Author(s):  
Mohammad Karimi Firozjaei ◽  
Omid Nematollahi ◽  
Naeim Mijani ◽  
Saman Nadizadeh Shorabeh ◽  
Hamzeh Karimi Firozjaei ◽  
...  

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.


1882 ◽  
Vol 13 (333supp) ◽  
pp. 5317-5317
Author(s):  
W. B. Carpenter
Keyword(s):  

1999 ◽  
Vol 09 (PR3) ◽  
pp. Pr3-41-Pr3-46
Author(s):  
C. Royère
Keyword(s):  

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