Author Topic: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)  (Read 20286 times)

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #20 on: 09/29/2017 04:43 AM »
"Good idea how to create carbon-fiber tank.  "That's key to developing this big rocket.


Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #22 on: 09/29/2017 04:44 AM »
Raptor will be highest thrust-to-weight ratio engine ever.


1,200 seconds across 42 main engine tests.

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #23 on: 09/29/2017 04:44 AM »
Raptors would fire for 40secs to land a vehicle on Mars.

Online meekGee

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #24 on: 09/29/2017 04:44 AM »
Says the 12m test tank was pressurized to design pressure, but failed just above that.
Design goal for Raptor 300 Bar
ABCD - Always Be Counting Down

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #25 on: 09/29/2017 04:45 AM »
Propulsive landing:

To land on Moon/Mars, you have to get propulsive landings right.  That's what we've been practicing with F9.  16 successful landings in a row.

That's without redundancy.  F9 lands on single engine.  BFR would have multi-engine out landing capability.
« Last Edit: 09/29/2017 04:46 AM by ChrisGebhardt »

Offline Chris Bergin

Aiming to get propulsive landing perfect. (That'll be for the launch mount return).

BFR won't need legs.


Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #28 on: 09/29/2017 04:46 AM »
"We can get to landing reliability on par with safest commercial airliners."

We believe propulsive landing precise is so great that it will land back on its launch mount.  It won't need landing legs.

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #29 on: 09/29/2017 04:47 AM »
Whoa.  30 Falcon launches anticipated next year.

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #30 on: 09/29/2017 04:48 AM »
We need a high launch rate for BRF and the plan for Mars and orbital refueling.

Offline WindnWar

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #31 on: 09/29/2017 04:48 AM »
200 bar for current Raptor tests, flight pressures of 250 with a goal of 300 bar.

That's 2900 psi current, 3625 for flight chamber pressure, and 4351psi for their goal chamber pressure.

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #32 on: 09/29/2017 04:49 AM »
Next key tech is automated rendezvous and docking.  This has to be very high precision for propellant transfer.

Dragon 2 will do completely automated berthing tech.  Won't need Canada arm like Dragon 1.  "Just press 'go' and it will dock."

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #33 on: 09/29/2017 04:49 AM »
Dragons are also helping perfect heat shield tech.


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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #34 on: 09/29/2017 04:51 AM »
We started off with a few people who really didn't know how to make rockets. I ended up being chief engineer because we couldn't get anyone to join. I messed up the first three launches.  Fortunately, the fourth launch worked or that would have been it for SpaceX.  Fate liked us that day.

Today is the 9th anniversary of the first successful SpaceX launch.

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #35 on: 09/29/2017 04:52 AM »
Falcon 1 small compared to Falcon 9.

F9 is 30x more payload than F1 and reuse of first stage (and hopefully soon of the fairing).  Hoping we can get ot 80% reuse of the F9 systems.

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #36 on: 09/29/2017 04:52 AM »
Falcon Heavy "hoping for still the end of the year."

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #37 on: 09/29/2017 04:54 AM »
Beginning serious development of BFR.

BFR is fully reusable.

150t to LOE on BFR v. 30t to LEO for FH.

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #38 on: 09/29/2017 04:54 AM »
BFR is 106m tall.

Offline ChrisGebhardt

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Re: Elon Musk Presentation, IAC 2017 - Sep. 29, 2017 (0430 UTC)
« Reply #39 on: 09/29/2017 04:55 AM »
Sub-scale BFR - 31 Raptor engines for 5,400t lifting 4,400t vehicle.

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