Listrik surya wind sail bisa membuat penerbangan manusia ke Mars dua arah ekonomis--T-REC-komunitas reptil-semarang--KSE-komunitas satwa eksotik

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Listrik surya wind sail  bisa membuat penerbangan  manusia ke Mars  dua arah ekonomis

E – sail  adalah teknologi propellantless baru yang diciptakan di Finlandia pada tahun 2006. E – sail  .... , .... untuk mengkonversi alami  momentum  fluks solar wind  men dorong pesawat ruang angkasa ....read more

Electric solar wind sail could make
bidirectional human Mars flights economically feasible

Date:

April 27, 2015

Source:

Finnish Meteorological Institute

Summary:

The E-sail is a novel propellantless technology that was invented in
Finland in 2006. The E-sail utilizes long, charged tethers to convert natural
solar wind momentum flux into spacecraft thrust.

.........................

The E-sail is a novel
propellantless technology that was invented in Finland in 2006. The E-sail
utilises long, charged tethers to convert natural solar wind momentum flux into
spacecraft thrust.

According to Janhunen et al. (2015) the E-sail could make asteroid mining
feasible by providing essentially free logistics in the solar system outside of
Earth's magnetosphere. After finding a suitable water bearing asteroid, a
mining unit is could be sent by the E-sail to extract the water from asteroid
soil.

This can be done by heating the material and letting the evolving water
vapour condense in a cool container. When the container is full, it is
separated from the mining unit and transported with an E-sail in to the orbit
of Mars or Earth, where it is split into hydrogen and oxygen and liquefied. The
liquid hydrogen/oxygen (LH2/LOX) fuel can be used to fill the tanks of manned
vehicles travelling between Earth and Mars.

Due to the exponential nature of the rocket equation, intermediate tankings
reduce the launch mass dramatically. During the trip, asteroid-mined water
could also be used as radiation shielding of the manned module to reduce the
launch mass further. With cheap propellant available in Mars orbit, there is
also the option of fully propulsive landing on Mars which eliminates the need
of a massive and expensive heat shield.

The Electric solar wind sail facilitated Manned Mars Initiative, EMMI,
could provide a fundamentally new, economically sustainable way to approach
manned Mars flights. The running costs of the EMMI are not expected to much
exceed those of maintaining the International Space Station.







Story Source:

The above story is based on materials provided by Finnish Meteorological Institute. Note:
Materials may be edited for content and length.







Journal Reference:

1.   
Pekka Janhunen, Sini Merikallio, Mark Paton. EMMI—Electric solar
wind sail facilitated Manned Mars Initiative. Acta Astronautica,
2015; 113: 22 DOI:10.1016/j.actaastro.2015.03.029



sumber


http://www.sciencedaily.com/releases/2015/04/150427082545.htm

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