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Author Topic: Space X to fly first private passenger around the moon  (Read 2495 times)

Offline Flyaway

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Space X to fly first private passenger around the moon
« on: September 13, 2018, 11:23:11 pm »
Quote
SpaceX has signed the world’s first private passenger to fly around the Moon aboard our BFR launch vehicle—an important step toward enabling access for everyday people who dream of traveling to space. Find out who’s flying and why on Monday, September 17.

https://twitter.com/id/status/1040397262248005632

Elon confirms underneath that’s a new render of the BFR. You can find a better version of the image on the link below.

https://www.spacex.com
« Last Edit: September 13, 2018, 11:47:33 pm by Flyaway »

Offline Archibald

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Re: Space X to fly first private passenger around the moon
« Reply #1 on: September 14, 2018, 03:59:32 am »
Here we go again. As in February 2017. Btw, BFS seems to have changed, not exactly for good: it now looks like a Shuttle orbiter.

Wait and see.
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Offline sferrin

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Re: Space X to fly first private passenger around the moon
« Reply #2 on: September 14, 2018, 04:14:00 am »
Here we go again. As in February 2017. Btw, BFS seems to have changed, not exactly for good: it now looks like a Shuttle orbiter.

Wait and see.

3 fins now instead of two (more weight and drag).  And the "150 tons to orbit" included the weight of the orbiter so it's more like 100 tons. . . even less now with the extra fin.
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Offline Tuna

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Re: Space X to fly first private passenger around the moon
« Reply #3 on: September 14, 2018, 09:42:12 am »
And the "150 tons to orbit" included the weight of the orbiter

Exactly what is your source here? SpaceX has never referred to the payload capacity of any of their rockets as including the second stage.

Offline sferrin

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Re: Space X to fly first private passenger around the moon
« Reply #4 on: September 14, 2018, 09:52:33 am »
And the "150 tons to orbit" included the weight of the orbiter

Exactly what is your source here? SpaceX has never referred to the payload capacity of any of their rockets as including the second stage.

Their initial release said 150 tons to orbit with BFR.  Something I saw a week or two ago said, "100 tons when fully reusable".

here:

« Last Edit: September 14, 2018, 09:56:10 am by sferrin »
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Offline Flyaway

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Re: Space X to fly first private passenger around the moon
« Reply #5 on: September 14, 2018, 09:52:43 am »
Find out who’s flying and why on Monday, September 17 at 6pm PT.

Video stream will be here:

Offline Flyaway

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Re: Space X to fly first private passenger around the moon
« Reply #6 on: September 14, 2018, 09:54:20 am »
And the "150 tons to orbit" included the weight of the orbiter

Exactly what is your source here? SpaceX has never referred to the payload capacity of any of their rockets as including the second stage.

Their initial release said 150 tons to orbit with BFR.  Something I saw a week or two ago said, "100 tons when fully reusable".

All I will say to you on the second figure is source, as it’s a new one on me?

Offline sferrin

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Re: Space X to fly first private passenger around the moon
« Reply #7 on: September 14, 2018, 09:58:50 am »
And the "150 tons to orbit" included the weight of the orbiter

Exactly what is your source here? SpaceX has never referred to the payload capacity of any of their rockets as including the second stage.

Their initial release said 150 tons to orbit with BFR.  Something I saw a week or two ago said, "100 tons when fully reusable".

All I will say to you on the second figure is source, as it’s a new one on me?

See above.  I always wondered about the 150 tons claim because if it meant 150 tons AND the orbiter that would be a hell of a launcher.  For example, the Shuttle is always quoted as 65,000lb payload because the 150,000lbs of the orbiter itself didn't count.
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Offline TomS

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Re: Space X to fly first private passenger around the moon
« Reply #8 on: September 14, 2018, 10:32:42 am »
https://www.spacex.com/sites/spacex/files/making_life_multiplanetary-2017.pdf

Clearly states that 150 tons is the payload to LEO for the BFR spacecraft, not for the BFR first stage. 

BFR is a hell of a big launcher -- bigger than Saturn V.  The only really comparable launcher being discussed is SLS Block 2.

Offline sferrin

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Re: Space X to fly first private passenger around the moon
« Reply #9 on: September 14, 2018, 11:30:18 am »
https://www.spacex.com/sites/spacex/files/making_life_multiplanetary-2017.pdf

Clearly states that 150 tons is the payload to LEO for the BFR spacecraft, not for the BFR first stage. 

BFR is a hell of a big launcher -- bigger than Saturn V.  The only really comparable launcher being discussed is SLS Block 2.

Did you watch the video? From video:
« Last Edit: September 14, 2018, 11:32:37 am by sferrin »
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Offline TomS

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Re: Space X to fly first private passenger around the moon
« Reply #10 on: September 14, 2018, 11:44:39 am »
https://www.spacex.com/sites/spacex/files/making_life_multiplanetary-2017.pdf

Clearly states that 150 tons is the payload to LEO for the BFR spacecraft, not for the BFR first stage. 

BFR is a hell of a big launcher -- bigger than Saturn V.  The only really comparable launcher being discussed is SLS Block 2.

Did you watch the video? From video:

Yep.  Sorry, I was responding to the idea that the payload number includes the weight of the second stage, which isn't so.  It sounds like they've downsized a bit more in the latest iterations of the design. 

Offline sferrin

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Re: Space X to fly first private passenger around the moon
« Reply #11 on: September 14, 2018, 11:57:27 am »
https://www.spacex.com/sites/spacex/files/making_life_multiplanetary-2017.pdf

Clearly states that 150 tons is the payload to LEO for the BFR spacecraft, not for the BFR first stage. 

BFR is a hell of a big launcher -- bigger than Saturn V.  The only really comparable launcher being discussed is SLS Block 2.

Did you watch the video? From video:

Yep.  Sorry, I was responding to the idea that the payload number includes the weight of the second stage, which isn't so.  It sounds like they've downsized a bit more in the latest iterations of the design.

Or maybe the payload ratio just went down as weight goes up with the detail design work (adding a 3rd fin and it's associated weight and drag for instance).
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Offline Tuna

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Re: Space X to fly first private passenger around the moon
« Reply #12 on: September 14, 2018, 02:25:06 pm »
I think that more than the fin the issue is that they seem to have moved from 3x sea level, 4x vacuum engine setup to using 7x the same engine. For landing considerations, those engines must remain able to throttle down deep while in 1 bar without becoming too underexpanded, so they just lost 10-15s of planned specific impulse.

Offline Rhinocrates

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Re: Space X to fly first private passenger around the moon
« Reply #13 on: September 14, 2018, 06:13:27 pm »
There is a complication at the root of the lower tail fin that appears to be a hinge and a similar one for the canard, which would suggest that they fold upwards during re-entry, a la Bor, MiG 105, Spiral.
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Offline merriman

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Re: Space X to fly first private passenger around the moon
« Reply #14 on: September 14, 2018, 08:21:02 pm »
BFS looks like an escapee from a George Pal movie. I like it!

David
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