منابع مشابه
Electric Solar Wind Sail Mass Budget Model
The electric solar wind sail (E-sail) is a new type of propellantless propulsion system for Solar System transportation, which uses the natural solar wind for producing spacecraft propulsion. This paper discusses a mass breakdown and a performance model for 5 an E-sail spacecraft that hosts a scientific payload of prescribed mass. In particular, the model is able to estimate the total spacecraf...
متن کاملInvited article: Electric solar wind sail: toward test missions.
The electric solar wind sail (E-sail) is a space propulsion concept that uses the natural solar wind dynamic pressure for producing spacecraft thrust. In its baseline form, the E-sail consists of a number of long, thin, conducting, and centrifugally stretched tethers, which are kept in a high positive potential by an onboard electron gun. The concept gains its efficiency from the fact that the ...
متن کاملCombining Electric and Sail Propulsion for Interplanetary Sample Return*
Fast sample return from the outer Solar System would open an entirely new avenue for space science, but the vast distances make this a daunting task. The achievable transit velocity and the need for extra propellant on the return trip limit the feasibility of returning extraterrestrial samples to Earth. To keep the mission duration short enough to be of interest, sample return from objects fart...
متن کاملMoving an asteroid with electric solar wind sail
The electric solar wind sail (E-Sail) is a new propulsion method for interplanetary travel which was invented in 2006 and is currently under development. The E-Sail uses charged tethers to extract momentum from the solar wind particles to obtain propulsive thrust. According to current estimates, the E-Sail is 2-3 orders of magnitude better than traditional propulsion methods (chemical rockets a...
متن کاملSAIL: A hybrid approach to sentiment analysis
This paper describes our submission for SemEval2013 Task 2: Sentiment Analysis in Twitter. For the limited data condition we use a lexicon-based model. The model uses an affective lexicon automatically generated from a very large corpus of raw web data. Statistics are calculated over the word and bigram affective ratings and used as features of a Naive Bayes tree model. For the unconstrained da...
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ژورنال
عنوان ژورنال: Acta Astronautica
سال: 2021
ISSN: 0094-5765
DOI: 10.1016/j.actaastro.2021.05.003