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SpaceX and other space stuff

#801
SBassman said:
How does a single Raptor engine compare to a single Saturn V engine?
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1,522,000 lbf for the F1, ~500,000 max for the Raptor, so roughly 1/3 the thrust. The F1s were HUGE!

(Edit: though there's an engine comparison page on wikipiedia that says Raptor SL gets 2,205,000Nm= 1,626,325ft-lb, so confusing...)
 
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#802
Rocketdyne F-1 (Saturn V) = 1,522,00 pounds thrust at sea level, 1,746,000 pounds thrust in vacuum

SpaceX Raptor = up to 790,000 pounds thrust in vacuum*

* the Raptor is designed to be used in a variety of pressures giving different thrust levels. The nozzle designs are different depending on whether it’s a sea level-optimised launch engine or a vacuum-optimised boost engine which also give different thrust levels. Plus, the Raptor is designed to be used up to 1,000 times, a slight improvement over the F-1’s single use!
 
#803
bholder said:
1,522,000 lbf for the F1, ~500,000 max for the Raptor, so roughly 1/3 the thrust. The F1s were HUGE!

(Edit: though there's an engine comparison page on wikipiedia that says Raptor SL gets 2,205,000Nm= 1,626,325ft-lb, so confusing...)
Click to expand...

Beat me to it!

(Edit - I think the 1.6 million pound figure was the original design goal from before the design was changed to use methalox fuel. I don’t know if they planned a huge Raptor launch engine and then Merlins for the second stage. The current design is less showbiz but a lot more practical.)
 
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#808
I'd still like to be an astronaut and visit the ISS, but that pic of Chris sleeping does not look comfortable at all.

GJCCFFhH7wheQG5aGUkfEa-1200-80.jpg


Source: Space station crew spend extra night in Russian segment as air leak investigation continues | Space.

-Mike
 
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#810
MJ5150 said:
Give it up Boeing.
SpaceX has this under control.

-Mike
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Don’t forget it’s competition that drives innovation, Boeing got to be the world leader in passenger aviation as a reaction to Douglas and Lockheed kicking their ass. That’s what pretty much killed the British aviation industry, we went from too many companies to just one in about 30 years through a process of amalgamations and now it’s more or less over. I won’t go any further because politics discussions are verboten (with good reason!)
 
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#811
I agree about the competition, but, it's also hard to ignore thoughts about what it would be like if SpaceX had More funding - that we are essentially throwing away with both NASA internal programs as well as Boeing money. :)

I know Boeing has some great achievements in the past, but I don't want the company involved in the 737 Max building my next capsule.
 
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#812
SBassman said:
I agree about the competition, but, it's also hard to ignore thoughts about what it would be like if SpaceX had More funding - that we are essentially throwing away with both NASA internal programs as well as Boeing money. :)

I know Boeing has some great achievements in the past, but I don't want the company involved in the 737 Max building my next capsule.
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The other part of this - is what NASA concluded about Boeing after the Starliner investigation.
In addition to a very long list of corrective actions necessary, they drew some conclusions questioning their overall development process. That's not too good, but now that a little time has elapsed, no one is talking about that, and Jim B is just talking up their next steps. Not a fan of all that. That doesn't smell good at all.
 
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#813
RayWithFlats said:
Don’t forget it’s competition that drives innovation, Boeing got to be the world leader in passenger aviation as a reaction to Douglas and Lockheed kicking their ass. That’s what pretty much killed the British aviation industry, we went from too many companies to just one in about 30 years through a process of amalgamations and now it’s more or less over. I won’t go any further because politics discussions are verboten (with good reason!)
Click to expand...
Boeing certainly used to know how to compete. If they don't figure it out again real soon now, they'll be gone. Times they are a changin'.
 
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#817
bholder said:
Boeing certainly used to know how to compete. If they don't figure it out again real soon now, they'll be gone. Times they are a changin'.
Click to expand...

That's a subject near and dear to the hearts of Pacific Northwesterners.
It's definitely a different company nowadays, and from my view not better.

-Mike
 
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#819
ahc said:
[This invalid link has been removed]
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From the article:
'will take the company's XL-1 lunar lander to the south pole of the moon with NASA payloads on board, including scientific experimentation instruments, as well as cargo from commercial passengers.'
I wonder what that commercial passenger cargo could be.

-Mike
 
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#820
A busy few days coming up.
Launchapalooza! You can watch 5 rockets launch in 4 days this week | Space.
The ULA launch was scrapped for today, but the others look good to go for now
SpaceX is on deck.
If you haven't seen a Rocket Labs launch from New Zealand yet, be sure and make time to watch it. It'll be dark, so you won't be able to see the surrounding scenery as well, but it's going to be cool nonetheless.

-Mike
 
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