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SpaceX General Section / Re: Musk's colony philosophy
« Last post by guckyfan on Today at 08:26 PM »
Another point on your post.

You state, MCT is sent back to earth and is not available for return. That is true. But there is no instant return to earth anyway, not like on the ISS. You can evacuate only on the next window. If a need for evacuation arises then MCT can be sent empty instead of with crew and would be availabale for evacuation at the same time as it would be when it stayed on Mars. Or is something wrong in my thinking?
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SpaceX General Section / Re: Financing Spacex's Mars plans
« Last post by WindyCity on Today at 08:26 PM »
The desirability, even the morality, of settling Mars does bear on this discussion in the following sense. Raising the funds to pay for the ramp-up R&Dómost likely from SpaceX and Tesla Motors profits, sympathetic billionaires, and perhaps small donations from less wealthy individualsówill ride on how attractive people find the project. A lot of careful thought will have to go into its planning and how it's presented to the public. Questions about the settlement's governance, its path to sustainability, how it will avoid contamination of sites of scientific value, including those where indigenous life might exist, must be addressed before a PR and fund-raising campaign gets launched. I doubt that vast amounts of money would flow to such a venture unless it had been founded from the beginning on a mature, sensitive, well-reasoned basis.

On political issues -- and this is a political issue -- people always perceive those that agree with themselves as "mature, sensitive, and well-reasoned" and those with other opinions as immature, insensitive and badly-reasoned.

Don't confuse me with the facts! My mind's made up.  ;)
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SpaceX General Section / Re: Musk's colony philosophy
« Last post by guckyfan on Today at 08:21 PM »
ok, new line of discussion, again stemming from what SpaceX has disclosed about their plans.

Elon said several times that the Mars transportation system will be fully reusable.

This seems to me to be mutually exclusive with the ability to have everyone board MCTs and fly home.



I don't get yet what this MCT design would look like. Could you expand somewhat on this concept?

Up to now I thought that the required delta-v from LEO to Mars surface is similar to the required delta-v from Mars surface to earth return, considering that the delta-v for landing on earth is very low due to aero braking and escape velocity on Mars is much lower. I got that impression from previous discussions. If the delta-v for return is some higher it can be compensated by reduced payload. As a manned MCT even with consumables will need a lot less than 100 ton payload for 100 people it could get back the whole crew even with higher delta-v need.


The MCT you are proposing is different how? It still needs to get 100t to Mars surface but you say it can get back only almost empty. Do you propose a kick stage that gets it partly on the way to Mars and returns to earth, doing several launches in one window?

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SpaceX General Section / Re: Financing Spacex's Mars plans
« Last post by ChrisWilson68 on Today at 08:06 PM »
The desirability, even the morality, of settling Mars does bear on this discussion in the following sense. Raising the funds to pay for the ramp-up R&Dómost likely from SpaceX and Tesla Motors profits, sympathetic billionaires, and perhaps small donations from less wealthy individualsówill ride on how attractive people find the project. A lot of careful thought will have to go into its planning and how it's presented to the public. Questions about the settlement's governance, its path to sustainability, how it will avoid contamination of sites of scientific value, including those where indigenous life might exist, must be addressed before a PR and fund-raising campaign gets launched. I doubt that vast amounts of money would flow to such a venture unless it had been founded from the beginning on a mature, sensitive, well-reasoned basis.

On political issues -- and this is a political issue -- people always perceive those that agree with themselves as "mature, sensitive, and well-reasoned" and those with other opinions as immature, insensitive and badly-reasoned.
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SpaceX General Section / Re: MCT Names?
« Last post by Carreidas 160 on Today at 08:03 PM »
Why stick with authors when there are so many others connected to sci-fi?

Directors / actors:

The George Lucas
The Michael Bay  ;)
The J.J. Abrams
The Stanley Kubrick
The James Cameron
The Ridley Scott
The William Shatner
The Leonard Nimoy
The Patric Stewart

What about fictional characters/spaceships:

The Luke Skywalker
The Princess Leia
The Han Solo
The Darth Vader
The Boba Fett
The Lando Calrissian
The James T. Kirk
The Jean-Luc Picard

My personal favorite:
The Nostromo

Wild card:

The Neil DeGrasse Tyson

:)
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I just hope that heavy weather and resulting high waves in the Atlantic wont make the barge roll too much. Bad weather could also make helicopter work very unlikely.
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Gee, when I threw my barge idea out there a few months back, I was telling Lobo I think... that I was only half serious. Now... here it is...! ;D

This really shows the level of ingenuity of the people of SpaceX. Many people here at NSF thought that this was probably just a typo. And here we are...
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SpaceX General Section / Re: Financing Spacex's Mars plans
« Last post by WindyCity on Today at 07:47 PM »
The desirability, even the morality, of settling Mars does bear on this discussion in the following sense. Raising the funds to pay for the ramp-up R&Dómost likely from SpaceX and Tesla Motors profits, sympathetic billionaires, and perhaps small donations from less wealthy individualsówill ride on how attractive people find the project. A lot of careful thought will have to go into its planning and how it's presented to the public. Questions about the settlement's governance, its path to sustainability, how it will avoid contamination of sites of scientific value, including those where indigenous life might exist, must be addressed before a PR and fund-raising campaign gets launched. I doubt that vast amounts of money would flow to such a venture unless it had been founded from the beginning on a mature, sensitive, well-reasoned basis.
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Missions To Mars (HSF) / Re: Power for a Mars colony
« Last post by A_M_Swallow on Today at 07:43 PM »
{snip}
Even with solar power this is an issue!  My home's solar panels are "grid-tied."  That means they throw any excess power into the grid, which soaks it up and sends it to other users.  Now if I wanted to go off-grid, I'd need a battery system of some sort, not because I want to store the power (I do), but because if I don't accept the full amount of power the system is generating at any instant, the system would overheat in a few moments and start a fire.  I can turn it off of course, but then I get nothing.  So it's 0% or 100% acceptance of the system generation without a radiator (in this case a battery acts as the radiator).

Even when working at peak load the reactor will need a cooling system, unless it is the only 100% efficient machine in history.
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Airbus Perlan near-space glider announcement today at the Oshkosh air show.
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