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Hermes in Earth Orbit by francisdrakex Hermes in Earth Orbit by francisdrakex
The Hermes over Florida during the commissioning flight. Two crew members are performing an EVA to inspect outboard systems.

Hermes is launched unmanned on an SLS-type booster. It is designed to fit into a 5 m payload fairing while collapsed. When in orbit the trusses and radiators are deployed and the hab is inflated in an automatic sequence. The reactor is inoperative at this time, electrical power is provided by a temporary solar wing.

A separate launch lifts an Orion crew vehicle with a commissioning crew and an initial fill of ion engine fuel into orbit. The ion engine fuel is inert and poses no risk to the crew. The Orion docks to the hab and the crew checks out the hab and flight systems.

Using the Orion's propulsion system the orbit of the docked spacecrafts is raised to 800 km. This is to provide additional safety before activating the reactor. When the reactor is started it supplies electrical power to the ion engines and Hermes spirals up to the first Earth-Moon Lagrange point. The commissioning crew then returns to Earth. Hermes is ready for flight.
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LordOmegaZ Featured By Owner Apr 4, 2015  Hobbyist Digital Artist
are those 40 ion engines !!? (20 on each side at the front)?
francisdrakex Featured By Owner May 28, 2015
Yes, these are ion thrusters. The thrust of each engine is feeble, only 5 Newton each. Hence the large number, to move around a 100 ton ship. These type of thruster have a high specific impulse (high exhaust velocity, very good fuel efficiency). Hermes can reach Mars in 120 days, instead of the 8 months of a classical transfer orbit.
LordOmegaZ Featured By Owner May 29, 2015  Hobbyist Digital Artist
yeah i know, thrust is like paper resting on your hand. :p

ion thrusters are so much better cos of their long life and build up speeds :3

oh and cos they only need two things, xenon gas and sunlight-electricity)

o3o thats fast ;w; we could be on mars right now!
I-Phillip Featured By Owner Nov 16, 2015
Not even sunlight, the Hermes has a nuclear reactor which provides all the required electricity. :)
LordOmegaZ Featured By Owner Nov 16, 2015  Hobbyist Digital Artist
o3o *waves arms* <3 oooooh
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Submitted on
September 28, 2014
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