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Minimum craft to Mars and back !

Posted by: topspeed - Tue Apr 11, 2017 7:09 pm
The Space Fellowship :: View topic - Minimum craft to Mars and back !
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Minimum craft to Mars and back !
https://xprizenews.org/Forum/viewtopic.php?f=16&t=13173
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Author:  topspeed [ Fri Dec 01, 2017 1:48 pm ]
Post subject:  Re: Minimum craft to Mars and back !

RGClark wrote:
With orbital propellant depots at both departure and arrival points a single reusable rocket stage could do all steps from LEO departure to Mars orbital insertion, to Mars landing, to liftoff up to Mars orbit, to return back to Earth:

Propellant depots for interplanetary flight.
http://exoscientist.blogspot.com/2015/0 ... etary.html

Bob Clark



I love it.

I have now a single stage system...it looks way cooler in many ways. Landing on Mars as an aeroplane would the thing to do next !!!

Author:  topspeed [ Sat Dec 09, 2017 9:56 pm ]
Post subject:  Re: Minimum craft to Mars and back !

I counted some WAYPOINT figures for the crafts ascent to orbit.

Interesting is that the craft has to reach almost orbital speed below 100 km to be able to fly to orbit.

M3 at 60 km and weight 56 metric tons.

M15 at 85 km and 31 tons weight ( rocket fuel burned away ).

Author:  topspeed [ Sun Dec 10, 2017 6:48 am ]
Post subject:  Re: Minimum craft to Mars and back !

I still haven't answered myself...what is the minimum craft to go to Mars.

I have studied a 120 m spanning and 80 m spanning version so far.

If Clark paper previously is valid we can possibly reach there with 60 m spanning craft with 1-3 people on board.

As the waypoints indicate those speeds at those altitude keep the temperature below 300 C + degrees.

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