Author Topic: Elon Musk IAC Mars Speech - Sept. 27, 2016 - DISCUSSION THREAD  (Read 230391 times)

Online matthewkantar

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Three way symmetry with three legs and and three grid fins, always thought they would do three if it wasn't for the eight engine circle on the F-9. Amazing ambition.


Matthew

Offline Mike_1179

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Terraforming?

How do you get the energy required to do that outside of nuclear?

*Falls-off-sofa*

Offline Brovane

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39-A!!

28M pounds of thrust exceeds the rating of 39A by a considerable margin. 
"Look at that! If anybody ever said, "you'll be sitting in a spacecraft naked with a 134-pound backpack on your knees charging it", I'd have said "Aw, get serious". - John Young - Apollo-16

Offline pobermanns

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I am so excited, I don't think I've been this excited (about spaceflight) since the Apollo moon landings. Before Elon's Mars commitments I was beginning to think that I would never see people walking on Mars in my lifetime (I'm 68 in a few weeks), but this gives me real hope.
Absolutely my feeling too! Takes me back to the 1960's with all of the Mercury, Gemini and Apollo launches. Truly an exciting time!

Online Lars-J

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42 Raptors in first stage and 7 in second.

Including three smaller ones in the middle.

Probably Mars atmosphere pressure optimized instead of vacuum optimized.

Here is a screencap:

They might all be Raptors - the combustion chamber throat looks the same diameter in this video -  but three in the middle look optimized for atmospheric use. (need something to land back on earth with)  :)

So the "MCT" may have 6 Vacuum raptors, and 3 raptors optimized for atmosphere use.
« Last Edit: 09/27/2016 06:01 PM by Lars-J »

Offline AncientU

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42 SL raptors. 127,800 kN of lift off thrust (3042 kN per engine).
6 vac raptors + 3 SL raptors on the spaceship. 200kw of solar power.
28,000ms interplanetary coast speed.
2 launch mission profile.
Booster + Spaceship launch, spaceship in parking orbit.
Booster + tanker launch, rendezvous and refuel before starting for Mars.
All parts of the mission are re-usable.
 

Artistic license... multiple tankers likely.
"If we shared everything [we are working on] people would think we are insane!"
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Offline sunbingfa

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Can anyone calculate if 6+3 raptor engine will be enough for coming back from Mars? Or do they need to build a 1st stage booster on Mars?

Offline Dante80

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42 SL raptors. 127,800 kN of lift off thrust (3042 kN per engine).
6 vac raptors + 3 SL raptors on the spaceship. 200kw of solar power.
28,000ms interplanetary coast speed.
2 launch mission profile.
Booster + Spaceship launch, spaceship in parking orbit.
Booster + tanker launch, rendezvous and refuel before starting for Mars.
All parts of the mission are re-usable.
 

 

Artistic license... multiple tankers likely.

Will amend.
« Last Edit: 09/27/2016 06:02 PM by Dante80 »

Offline Welsh Dragon

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That massive panoramic window has got to be artistic license. MMOD nightmare otherwise...

Offline FinalFrontier

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Terraforming?

How do you get the energy required to do that outside of nuclear?

*Falls-off-sofa*
You don't, nuclear will be utilized eventually. When and exactly how are the only questions.
3-30-2017: The start of a great future
"Live Long and Prosper"

Offline FinalFrontier

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39-A!!

28M pounds of thrust exceeds the rating of 39A by a considerable margin.

Brownsville pad possibly.
3-30-2017: The start of a great future
"Live Long and Prosper"

Offline AncientU

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42 Raptors in first stage and 7 in second.

Including three smaller ones in the middle.

Smaller ones in middle look to have retractable nozzles... optimized for deep space, departure burns, etc.
"If we shared everything [we are working on] people would think we are insane!"
-- SpaceX friend of mlindner

Online matthewkantar

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39-A!!

28M pounds of thrust exceeds the rating of 39A by a considerable margin.

Brownsville pad possibly.

Says 39A in the video.

Enjoy, Matthew

Offline Dante80

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39-A!!

28M pounds of thrust exceeds the rating of 39A by a considerable margin.

Brownsville pad possibly.

No, 39A. It clearly says it. They will probably make a new ditch, as the video hints at.

Offline topsphere

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39-A!!

28M pounds of thrust exceeds the rating of 39A by a considerable margin.

How is this rating determined?

Offline starsilk

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crash a small moon into the surface. lots o' heat.

or planet sized mirrors in orbit to reflect more sunlight.

Offline Jarnis

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Epic video that sure turns the hype to 11.

Bit of artistic license here and there that will probably get polished out when things are fleshed out, but it is a good ~4min summary of the plan how to get there. Sadly omits the return trip, hope it doesn't generate a lot of "one way trip" stories from clueless press.
« Last Edit: 09/27/2016 06:04 PM by Jarnis »

Offline MarekCyzio

39-A!!

28M pounds of thrust exceeds the rating of 39A by a considerable margin.
I guess this is the smallest of all challenges ;)

Offline HighlandRay

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I am completely blown away by that video and Elon hasn't said a word yet
To old to die young

Online Lars-J

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Amazing image of the booster boost-back:   :o  :o  :o

20+ raptors firing.

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