Author Topic: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)  (Read 16507 times)

Online Chris Bergin

There's the 9m BFR.

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #41 on: 09/29/2017 04:55 AM »
Crew module:

48m length
85t dry mass
150t max ascent payload
9m diameter
Paylaod return mass 50t


Online ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #43 on: 09/29/2017 04:56 AM »
Think of BFR crew/cargo vehicle as if Dragon and Stage 2 never separated and operated together.

"You can fit a whole stack of Falcon 91s in the payload bay of BFR."
« Last Edit: 09/29/2017 05:48 AM by gongora »

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #44 on: 09/29/2017 04:56 AM »
shots
"I think it would be great to be born on Earth and to die on Mars. Just hopefully not at the point of impact." -Elon Musk
"We're a little bit like the dog who caught the bus" - Musk after CRS-8 S1 successfully landed on ASDS OCISLY

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #45 on: 09/29/2017 04:57 AM »
Talking about delta wing for control of pitch angle despite wide range of payloads and atmospheric densities.

needed to generalize capability of BFR to land "anywhere in the solar system."


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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #47 on: 09/29/2017 04:58 AM »
a 380
"I think it would be great to be born on Earth and to die on Mars. Just hopefully not at the point of impact." -Elon Musk
"We're a little bit like the dog who caught the bus" - Musk after CRS-8 S1 successfully landed on ASDS OCISLY

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #48 on: 09/29/2017 04:58 AM »
825 m3 - bigger than pressurized area of A380 aircraft.

In Mars transit config, 40 cabins and large common areas, central storage, galley, and solar storm shelter.

2-3 ppl per cabin.  About a 100 people per flight to Mars.

Online Chris Bergin

40 cabins for crew transport. Could have five to six in a cabin, but expect 2 to 3. 100 people to Mars. Entertainment area. Solar Storm Shelter, etc.

And the business end:

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #50 on: 09/29/2017 04:59 AM »
Sub-cooled methane and oxygen is the propellant.

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #51 on: 09/29/2017 04:59 AM »
10-12% density increase when you sub-cool this props.

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #52 on: 09/29/2017 05:00 AM »
Header tank will be used to feed engines at landing at first.

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #53 on: 09/29/2017 05:00 AM »
tanks en gine
"I think it would be great to be born on Earth and to die on Mars. Just hopefully not at the point of impact." -Elon Musk
"We're a little bit like the dog who caught the bus" - Musk after CRS-8 S1 successfully landed on ASDS OCISLY

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #54 on: 09/29/2017 05:00 AM »
Ship engine section:

4 vac Raptor and 2 sea-level Raptors.  All can gimbal.


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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #56 on: 09/29/2017 05:01 AM »
Can land with either one of the two center engines.

Both will lit, but it one fails, BFR can land with just one sea-level Raptor engine.

Online Chris Bergin

New refueling process from the tanker.

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #58 on: 09/29/2017 05:02 AM »
Refueling - ships mate at the rear, same mating interface with Booster.

Use control thruster to accelerate in the direction you want to transfer propellant toward.

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #59 on: 09/29/2017 05:03 AM »
BFR has more capability to LEO than Saturn V -- even with full reusability AND FAR CHEAPER.

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