A Space & astronomy forum. SpaceBanter.com

Go Back   Home » SpaceBanter.com forum » Astronomy and Astrophysics » Astronomy Misc
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

Dragon landing on Mars video



 
 
Thread Tools Display Modes
  #1  
Old April 30th 11, 02:28 PM posted to sci.space.policy,sci.space.history,sci.astro,sci.physics
Robert Clark
external usenet poster
 
Posts: 1,150
Default Dragon landing on Mars video

On Apr 29, 4:51*pm, Pat Flannery wrote:
New SpaceX video showing the Dragon capsule using its escape system
engines to land on Mars:http://www.youtube.com/watch?v=6p6EruPdoXY

Pat



Elon Musk wants to land a man on Mars in 10 to 20 years:

SpaceX Will Send Humans To Mars In the Next 10 to 20 Years.
By Rebecca BoylePosted 04.25.2011 at 10:59 am
http://www.popsci.com/technology/art...rs-10-20-years

See the video interview linked on that page.

Bob Clark

  #2  
Old April 30th 11, 04:02 PM posted to sci.space.policy,sci.space.history,sci.astro,sci.physics
Sam Wormley[_2_]
external usenet poster
 
Posts: 3,966
Default Dragon landing on Mars video

On 4/30/11 8:28 AM, Robert Clark wrote:
On Apr 29, 4:51 pm, Pat wrote:
New SpaceX video showing the Dragon capsule using its escape system
engines to land on Mars:http://www.youtube.com/watch?v=6p6EruPdoXY

Pat



Elon Musk wants to land a man on Mars in 10 to 20 years:

SpaceX Will Send Humans To Mars In the Next 10 to 20 Years.
By Rebecca BoylePosted 04.25.2011 at 10:59 am
http://www.popsci.com/technology/art...rs-10-20-years

See the video interview linked on that page.

Bob Clark


One wonders what the plan is to keep the travelers from being killed
by radiation.
  #3  
Old April 30th 11, 04:29 PM posted to sci.space.policy,sci.space.history,sci.astro,sci.physics
Val Kraut
external usenet poster
 
Posts: 329
Default Dragon landing on Mars video


One wonders what the plan is to keep the travelers from being killed
by radiation.


NASA tended to be in denial on this issue and made statements like the Mars
crew will get their lifetime dose during the round trip - so no Mars crews
will fly twice. What we need is th acceptance that shielding must be
provided asgainst both gamma and fast particles, and a realistic allotment
for the extra weight. May need some different thoughts on where we make the
fuel - Moon or Mars.


Val Kraut


  #4  
Old April 30th 11, 07:14 PM posted to sci.space.policy,sci.space.history,sci.astro,sci.physics
David Spain
external usenet poster
 
Posts: 2,901
Default Dragon landing on Mars video

Pat Flannery wrote:
On 4/30/2011 7:29 AM, Val Kraut wrote:
One wonders what the plan is to keep the travelers from being killed
by radiation.


NASA tended to be in denial on this issue and made statements like the
Mars
crew will get their lifetime dose during the round trip - so no Mars
crews
will fly twice. What we need is th acceptance that shielding must be
provided asgainst both gamma and fast particles, and a realistic
allotment
for the extra weight. May need some different thoughts on where we
make the
fuel - Moon or Mars.


They played around with shielding the spacecraft with an electrostatic
screen:
http://www.msnbc.msn.com/id/5079651/...science-space/


But the article ends with a statement about surrounding the habitable core of
a Mars transit ship with tanks of LH2 or L-H20 to provide shielding. If liquid
water is used as a shield wouldn't it also need to be heated while in transit
to Mars? Or would pressurizing the water tanks help? Or both? All it takes is
energy, energy, energy.

These Dragon capsule Mars exploration wet dreams produced by the SpaceX PR
department makes my even more off-topic ranting fair game:

Warp drive or an interplanetary 'transporter' would solve *all* these mundane
problems. You know if we *had* a really good quantum traveling device,
everyone could get a chance to be everywhere at least once in their lifetime.
Hence all of space exploration could be achieved in just a few years (time
needed to get everyone to experience the quantum trip). Or maybe we just sell
hallucinogenics on the street corner instead of spending millions on NASA.
Outsource space exploration to Mexico!

:-)

Back on topic for a second. Really, if Musk wants to go to Mars and HE is
footing the bill, he is free to try...

Dave



  #5  
Old April 30th 11, 09:10 PM posted to sci.space.policy,sci.space.history,sci.astro,sci.physics
Pat Flannery
external usenet poster
 
Posts: 18,465
Default Dragon landing on Mars video

On 4/30/2011 7:29 AM, Val Kraut wrote:
One wonders what the plan is to keep the travelers from being killed
by radiation.


NASA tended to be in denial on this issue and made statements like the Mars
crew will get their lifetime dose during the round trip - so no Mars crews
will fly twice. What we need is th acceptance that shielding must be
provided asgainst both gamma and fast particles, and a realistic allotment
for the extra weight. May need some different thoughts on where we make the
fuel - Moon or Mars.


They played around with shielding the spacecraft with an electrostatic
screen: http://www.msnbc.msn.com/id/5079651/...science-space/

Pat
  #6  
Old April 30th 11, 10:57 PM posted to sci.space.policy,sci.space.history,sci.astro,sci.physics
Pat Flannery
external usenet poster
 
Posts: 18,465
Default Dragon landing on Mars video

On 4/30/2011 10:14 AM, David Spain wrote:
Pat Flannery wrote:
On 4/30/2011 7:29 AM, Val Kraut wrote:
One wonders what the plan is to keep the travelers from being killed
by radiation.

NASA tended to be in denial on this issue and made statements like
the Mars
crew will get their lifetime dose during the round trip - so no Mars
crews
will fly twice. What we need is th acceptance that shielding must be
provided asgainst both gamma and fast particles, and a realistic
allotment
for the extra weight. May need some different thoughts on where we
make the
fuel - Moon or Mars.


They played around with shielding the spacecraft with an electrostatic
screen:
http://www.msnbc.msn.com/id/5079651/...science-space/


But the article ends with a statement about surrounding the habitable
core of a Mars transit ship with tanks of LH2 or L-H20 to provide
shielding. If liquid water is used as a shield wouldn't it also need to
be heated while in transit to Mars? Or would pressurizing the water
tanks help? Or both? All it takes is energy, energy, energy.


Why does it have to be liquid? Ice would work as well, and make a great
micrometeor shield.


Back on topic for a second. Really, if Musk wants to go to Mars and HE
is footing the bill, he is free to try...


It does show that their very creative in what his team realizes Dragon
can do with its LES. The question is, did they plan for that from the
beginning, or realize it could do that after they decided on the escape
motors mounted in the capsule itself?
He may of gotten the idea from this Russian spacecraft design:
http://www.astronautix.com/craft/zarya.htm which used combo
escape/landing engines.

Pat
  #7  
Old May 1st 11, 12:14 AM posted to sci.space.policy,sci.space.history,sci.astro,sci.physics
Alan Erskine[_3_]
external usenet poster
 
Posts: 1,026
Default Dragon landing on Mars video

On 30/04/2011 11:28 PM, Robert Clark wrote:
On Apr 29, 4:51 pm, Pat wrote:
New SpaceX video showing the Dragon capsule using its escape system
engines to land on Mars:http://www.youtube.com/watch?v=6p6EruPdoXY

Pat



Elon Musk wants to land a man on Mars in 10 to 20 years:

SpaceX Will Send Humans To Mars In the Next 10 to 20 Years.
By Rebecca BoylePosted 04.25.2011 at 10:59 am
http://www.popsci.com/technology/art...rs-10-20-years

See the video interview linked on that page.

Bob Clark


Here's another link to the same interview
http://www.marke****ch.com/video/ass...C-DF0DEFAD15BA

However, it is to be remembered that this has been described as his
"personal goal" and might not have much to do with overall SpaceX plans.
  #8  
Old May 1st 11, 03:31 AM posted to sci.space.policy,sci.space.history,sci.astro,sci.physics
Pat Flannery
external usenet poster
 
Posts: 18,465
Default Dragon landing on Mars video

On 4/30/2011 12:43 PM, Val Kraut wrote:
NASA also had teams studying electric fields to protect bases on the Moon.
There's always the Caviate about power source


It would obviously require a powerful nuclear reactor be mounted on the
Mars ship.
Getting rid of the heat from that could be a real problem for the
designers, as it would require some very large radiators.

Pat
  #9  
Old May 1st 11, 04:41 AM posted to sci.space.policy,sci.space.history,sci.astro,sci.physics
Alan Erskine[_3_]
external usenet poster
 
Posts: 1,026
Default Dragon landing on Mars video

On 1/05/2011 12:31 PM, Pat Flannery wrote:
On 4/30/2011 12:43 PM, Val Kraut wrote:
NASA also had teams studying electric fields to protect bases on the
Moon.
There's always the Caviate about power source


It would obviously require a powerful nuclear reactor be mounted on the
Mars ship.
Getting rid of the heat from that could be a real problem for the
designers, as it would require some very large radiators.

Pat


PV (photo voltaic - solar cells) can still be used on Mars.

Why does everyone seem so intent on using nukes?
  #10  
Old May 1st 11, 06:08 AM posted to sci.space.policy,sci.space.history,sci.astro,sci.physics
Sjouke Burry[_2_]
external usenet poster
 
Posts: 402
Default Dragon landing on Mars video

Alan Erskine wrote:
On 1/05/2011 12:31 PM, Pat Flannery wrote:
On 4/30/2011 12:43 PM, Val Kraut wrote:
NASA also had teams studying electric fields to protect bases on the
Moon.
There's always the Caviate about power source

It would obviously require a powerful nuclear reactor be mounted on the
Mars ship.
Getting rid of the heat from that could be a real problem for the
designers, as it would require some very large radiators.

Pat


PV (photo voltaic - solar cells) can still be used on Mars.

Why does everyone seem so intent on using nukes?


Power per KG .
You need lots of power and a minimum of weight.
The choices are very limited.
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dragon landing on Mars video Pat Flannery Policy 36 May 2nd 11 07:05 PM
...Mars Science Lab Rover... entry, descent and landing video Jonathan Policy 0 October 13th 07 03:51 PM
Mars Landing Tomorrow: NASA-TV Video Stream RoNoNFT Policy 1 January 24th 04 07:15 PM
Mars Landing Video Stream Ronald Norman History 2 January 23rd 04 11:37 PM


All times are GMT +1. The time now is 01:32 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 SpaceBanter.com.
The comments are property of their posters.