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mikedreamer787
22nd Sep 2013, 09:20
You'd certainly want to know your Newtonian physics
before starting an undertaking like this!

How to Get to Mars. Very Cool! HD - YouTube (http://www.youtube.com/embed/XRCIzZHpFtY?rel=0)

RJM
22nd Sep 2013, 09:31
I wonder what the reception to the first suggestion of the bouncing thing was? How do they ensure it ends up the right way?

I note the Russians haven't copied it for landing their cosmonauts back on earth. :bored:

ExXB
22nd Sep 2013, 09:51
Head for the moon and turn right? or is it left? :hmm:

Cacophonix
22nd Sep 2013, 10:09
The real trick would be getting back from Mars...!

Great video but call me picky if I say I didn't get the rocket motor sound in airless space...

Caco

mikedreamer787
22nd Sep 2013, 10:23
True Caco but then I didn't make the vid. In space
no one can hear you scream....

Apart from the puter challenges of a mission of this
sort, it was akin to firing a cannonball at a moving
target 300 million miles away and hitting it within an
area of 1,000 sq m. Quite a feat IMO.

MG23
22nd Sep 2013, 18:45
I wonder what the reception to the first suggestion of the bouncing thing was? How do they ensure it ends up the right way?

Youtube isn't talking to me today for some reason, but, if I remember correctly, they don't have to. The rover is in a pyramidal container inside the balloons, so when they deflate and the sides of the container open, it automatically comes upright.

It's certainly much simpler than the rocket crane they used for the recent rover. I don't know many people who thought that was ever going to work.

tony draper
22nd Sep 2013, 18:53
I think the later probe dropped by sky crane was a more elegant engineeringwise,when it was first mooted we had a thread on it,everybody thought the idea was mad and couldn't possibly work but the buggas pulled it off,utterly brilliant.
Found a clip of it on youtube but pprune crashed before I could post the link,and I cant be harrassed to seek it out again.
:ok:

Lon More
22nd Sep 2013, 19:46
Doesn't the number 48 pass there? Or is that just on Sundays?

racedo
22nd Sep 2013, 19:52
True Caco but then I didn't make the vid. In space
no one can hear you scream....

Apart from the puter challenges of a mission of this
sort, it was akin to firing a cannonball at a moving
target 300 million miles away and hitting it within an
area of 1,000 sq m. Quite a feat IMO.

Or as Michael O'Leary knows it as......................route planning dept.

Cacophonix
23rd Sep 2013, 05:39
route planning dept

To put it in the parlance of our times, it would be rather 'cool' to be in the route planning department at NASA.

In order to do so would involve getting down and dirty with the maths and learn a bit more about Hohmann transfer orbits etc.

Sadly I am likely to be pushing up daisies by the time mankind really gets around to trying to land a human on Mars (if it ever happens as the trip is likely to be fraught with radiological danger)...

Still one can read and imagine...

Basics of Space Flight Section I. The Environment of Space (http://www2.jpl.nasa.gov/basics/bsf4-1.php)

Hohmann Transfer Orbit & Total Travel Time (http://www.polaris.iastate.edu/EveningStar/Unit6/unit6_sub2.htm)

Caco

ExXB
23rd Sep 2013, 11:06
Does NASA really use avoirdupois measurements? Didn't they have a real screw up with a previous Mars mission by mixing the two?

Cacophonix
23rd Sep 2013, 11:33
'avoirdupois'

Apparently NASA uses the SI system and thus is wedded to the metric system but humans are fallible and like the confusion that comes from mixing US and British gallons so there have been mistakes due to misuse of the old ways and the new...

http://oig.nasa.gov/old/inspections_assessments/g-00-021.pdf

Caco

ExXB
23rd Sep 2013, 11:37
So this video doesn't comply with:

"use the metric system as the preferred system for interactions with the public."

SOPS
23rd Sep 2013, 14:05
Does anyone know what function the cable that swings around the spacecraft a few times, performs?

Loose rivets
23rd Sep 2013, 14:12
Old hands, ignore my repeat ramble.


http://www.pprune.org/jet-blast/388531-one-way-trip-mars-2.html#post5186396

Limeygal
23rd Sep 2013, 16:28
How to get to Mars

Marianne Faithful?

Hat, coat, rolling stone. . .

vulcanised
23rd Sep 2013, 16:43
Funny you should mention Marianne - they're repeating her 'Who do you think you are' on the Beeb tonight.

Loose rivets
23rd Sep 2013, 22:25
Is she on a motorcycle, Grommet?

G-CPTN
23rd Sep 2013, 22:41
BBC iPlayer - Who Do You Think You Are?: Series 10: Marianne Faithfull (http://www.bbc.co.uk/iplayer/episode/b03bhsqv/Who_Do_You_Think_You_Are_Series_10_Marianne_Faithfull/)

RJM
24th Sep 2013, 05:33
Confusion re imp and metric in the amt of fuel on board leads to hilarity ( of a sort).


The Gimli Glider (http://www.wadenelson.com/gimli.html)