Author Topic: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)  (Read 83648 times)

Offline Chris Bergin

There's the 9m BFR.
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Offline ChrisGebhardt

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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

Offline Chris Bergin

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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 »

Offline Lar

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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

Offline ChrisGebhardt

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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."

Offline Chris Bergin

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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

Offline ChrisGebhardt

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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.

Offline 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:
« Last Edit: 09/29/2017 04:59 am by Chris Bergin »
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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.

Offline Chris Bergin

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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.

Offline 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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