[ RadSafe ] Mission to Mars

[Doug Aitken]

Bring on the Space Cowboys!
http://www.imdb.com/title/tt0186566/
;~)
Regards
Doug
___________________________________________________________________________________
Doug Aitken
QHSE Advisor, Schlumberger D&M Operations Support
Cell Phone: 713-562-8585
(alternate e-mail: doug.aitken at slb.com )
Mail:
Schlumberger, Drilling & Measurements HQ,
300 Schlumberger Drive, MD15,
Sugar Land, Texas 77478




-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Brennan, Mike (DOH)
Sent: Friday, February 22, 2013 5:12 PM
To: The International Radiation Protection (Health Physics) MailingList
Subject: Re: [ RadSafe ] Mission to Mars

I saw a presentation a couple of years ago that conclude that if you could assume the passengers were 50+ year-old men, and shielded appropriately, the trip was doable.  If, however, you had to design as if the passengers might be pregnant 20 year-old women, the shielding would be too massive, and you couldn't build a ship that met the other requirements.  

I, personally, would rather continue sending SPECTACULARLY successful robotic probes until a Space Elevator is built.  At that point the cost to get mass out of the gravity well plummets, and all the constraints for a ship that can get to Mars changes.  

On a related note, I've toyed with the idea of how you could use nuclear power (more-or-less conventional reactor, rather than using thermoelectric tech) in microgravity, I've pretty much concluded you need to have it in a spinning ship, with the top towards the axis, and auxiliary equipment acting to balance the mass.  Quite possibly the design you would wind up with is a disc, or saucer.  This would, however
not make for a ship you got to land anywhere.     

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Maury Siskel
Sent: Friday, February 22, 2013 2:47 PM
To: The International Radiation Protection (Health Physics) Mailing List
Cc: JPreisig at aol.com
Subject: Re: [ RadSafe ] Mission to Mars

I thought this trip remains beyond the shielding capabilities to withstand irradiation exposure  --  has this changed?  Otherwise sounds like a great adventure -- Dog also sez ok.
Maury&Dog  [MaurySiskel  maurysis at peoplepc.com] ========================= On 2/22/2013 12:55 PM, JPreisig at aol.com wrote:
> Dear Radsafe:
>
>       Hey All.  On US TV News today, Zubrin and  colleagues have
announced a private effort to
> reach Mars via spaceship or whatever.  The mission will start in
2018.  The trip will last 501 days.
>
>       Wonder if Maury and Dog will volunteer for the  trip???  Get
your spacesuits and Geiger Counters  ready???
>
>       Regards,   Joe Preisig
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