|sebu wrote: *||January 18th, 2019, 6:40 pm|
Thanks Shipright. I really am searching for realistic solution for Manned Mars Mission, so I'm pleased of your remarks.
Those blue ones are solar panels and brown are radiators. Maybe there could be radiators in gravity wheel? (not visible...) How could I calculate radiator need?
You can certainly have the outside facing hull of the ring act as radiators, but probably not for much more than removing the waste heat from the habitual ring itself. The radiation calculations are simply a matter of figuring out how much waste heat you need to get rid of, and what operating the temperature and surface area of radiators you have installed.
http://www.projectrho.com/public_html/r ... design.php
Radiators info is near the bottom of that link
Now; I've to admit I don't know the terms/meaning of "NSTRs shadow" or "backskatter radiation" (in Finnish, please
NSTR is just a nuclear solid core thermal rocket, like what you have on this design. Being nuclear the core emits radiation like any other reactor, and the crew and any part of the vessel not hardened against radiation needs to be protected.
So you need to have a shield between the engine and the ship that provides a radiation free "shaddow". To be effective these shields need to made out of massive materials, so the smaller the better. Once you have this shadow cast, everything needs to fit into it. Even a hardened but outside of it will reflect radiation around the shield.
You can get more shadow for you shield kilogram by having the engine far away from the rest of the ship. This means you get more shaded area for the same size shield, or because radiation strength falls off with distance, you don't need as thick of a shield.
http://www.projectrho.com/public_html/r ... iation.php
Propellants are also my weak point. There are appr. 100 m3 of Liquid Hydrogen for the main engine, 8 m3 for orbit braking and little bit for others...
I don't know, how to calculate the real volumes
The first link above talks about propellant volume. You can get lost in the math rabbit hole quickly, so I generally just use a general ratio of 1/2 to 2/3 internal volume dedicated to propellant tankage.
But, as I said: the journey is important.
I love this stuff. The real world engineering can lead you into some very unexpected places.