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Great job SpaceX



 
 
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  #1  
Old May 31st 20, 02:24 AM posted to sci.space.policy
Alain Fournier[_3_]
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Default Great job SpaceX

Nice launch.


Alain Fournier
  #2  
Old May 31st 20, 05:25 AM posted to sci.space.policy
Scott Kozel
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Posts: 62
Default Great job SpaceX

On Saturday, May 30, 2020 at 9:24:25 PM UTC-4, Alain Fournier wrote:
Nice launch.


Alain Fournier


This rocket is a lot bigger than it looks, it is taller than the Saturn 1B and has
greater payload to low Earth orbit.
  #4  
Old May 31st 20, 10:37 PM posted to sci.space.policy
snidely
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Posts: 1,303
Default Great job SpaceX

Alain Fournier suggested that ...
Nice launch.


Nice approach to station, too. I'm reviewing the NASA tubes of the
docking (I went to bed after crew wakeup).

It was hard to see thruster firings until departure from Waypoint 2.

Also, am I correct that the hinge for the nose cap is on the side
opposite the hatch and main window ports?

/dps

--
Killing a mouse was hardly a Nobel Prize-worthy exercise, and Lawrence
went apopleptic when he learned a lousy rodent had peed away all his
precious heavy water.
_The Disappearing Spoon_, Sam Kean
  #5  
Old May 31st 20, 10:50 PM posted to sci.space.policy
snidely
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Default Great job SpaceX

On Sunday, Snidely queried:
Alain Fournier suggested that ...
Nice launch.


Nice approach to station, too. I'm reviewing the NASA tubes of the docking
(I went to bed after crew wakeup).

It was hard to see thruster firings until departure from Waypoint 2.

Also, am I correct that the hinge for the nose cap is on the side opposite
the hatch and main window ports?


And the apatosaurus was in seat #4 during docking?

/dps

--
I have always been glad we weren't killed that night. I do not know
any particular reason, but I have always been glad.
_Roughing It_, Mark Twain
  #7  
Old June 1st 20, 04:57 PM posted to sci.space.policy
David Spain
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Default Great job SpaceX

On 2020-05-31 10:05 PM, Scott Kozel wrote:
On Sunday, May 31, 2020 at 12:32:42 PM UTC-4, Jeff Findley wrote:
In article ,
says...

On Saturday, May 30, 2020 at 9:24:25 PM UTC-4, Alain Fournier wrote:
Nice launch.

This rocket is a lot bigger than it looks, it is taller than the Saturn 1B and has
greater payload to low Earth orbit.


Yep. Falcon 9/Merlin first stage is quite a bit more advanced than the
Saturn 1B first stage (cluster's last stand) which was made from
existing tanks clustered together and was therefore less mass efficient
than a "clean sheet" would have been.

The upper stages are just different (kerosene on Falcon upper stage
versus LH2 on the Saturn), so hard to tell which one is "better".


Saturn 1B is clearly old technology, I just thought it was an interesting
comparison, that now we have a modern working rocket that exceeds its payload capacity.

Saturn 1B was huge and it dwarfed the Titan 3C, which was a large rocket in its
own right.


....The times they are a'changin....

Of note: I think it was Doug H. that mentioned in yesterday's presser
that F9 2nd stage was a rougher ride than shuttle when on SSME's only.
It might be that combustion flow through the MVac Merlin 1D leads to
more vibration of the engine, but it could also have been due to the
lower overall mass of the vehicle as well. Too bad all the surviving
Apollo astronauts are now too old to fly. I'd love to have had a
comparison. I'd bet $ that F9 is helluva lot smoother ride than a Saturn
5 or a Saturn 1B. Can we talk Walt Cunningham into a free ticket to ISS?
Heck 88 is the new 58 right? I'd get the feeling he'd say, "What? Are we
even moving?" :-)

Dave

PS: Good job SpaceX, looked like a nice ride from what I could see.

  #8  
Old June 2nd 20, 05:52 AM posted to sci.space.policy
snidely
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Posts: 1,303
Default Great job SpaceX

Alain Fournier noted that:
Nice launch.


Landing scheduled sometime between the anniversary of D-Day and the
anniversary of the Concorde's first non-stop crossing of the Atlantic.

(likely date is somewhere near the anniversary of Wiley Post completing
the first solo flight around the world)

/dps

--
But happiness cannot be pursued; it must ensue. One must have a reason
to 'be happy.'"
Viktor Frankl
  #9  
Old June 2nd 20, 12:34 PM posted to sci.space.policy
Jeff Findley[_6_]
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Posts: 2,307
Default Great job SpaceX

In article ,
says...

On Sunday, May 31, 2020 at 12:32:42 PM UTC-4, Jeff Findley wrote:
In article ,
says...

On Saturday, May 30, 2020 at 9:24:25 PM UTC-4, Alain Fournier wrote:
Nice launch.

This rocket is a lot bigger than it looks, it is taller than the Saturn 1B and has
greater payload to low Earth orbit.


Yep. Falcon 9/Merlin first stage is quite a bit more advanced than the
Saturn 1B first stage (cluster's last stand) which was made from
existing tanks clustered together and was therefore less mass efficient
than a "clean sheet" would have been.

The upper stages are just different (kerosene on Falcon upper stage
versus LH2 on the Saturn), so hard to tell which one is "better".


Saturn 1B is clearly old technology, I just thought it was an interesting
comparison, that now we have a modern working rocket that exceeds its payload capacity.


Agreed. I always thought the Saturn 1B could become quite the
workhorse. There were plans for upgrades as well. Tons of stuff on
astronautix.com.

Saturn 1B was huge and it dwarfed the Titan 3C, which was a large rocket in its
own right.


Here's a picture I found on Reddit showing various crewed launch
vehicles to scale:

https://www.reddit.com/r/nasa/commen...asa_human_spac
eflight/

Falcon 9 really is a beast. It doesn't look like much compared to the
Saturn IB, but to quote Han Solo: "She may not look like much, but
she's got it where it counts, kid."

But when you compare Saturn V to SLS 1A and SLS 1B (remains to be seen
if the EUS for 1B will ever be built), SLS falls short in the
performance department. NASA keeps boasting that SLS is "more
powerful" than Saturn V, but that's only liftoff thrust. The fact is
those SRBs do have high thrust, but their casings are *heavy* and their
ISP is terrible, leading to worse performance compared to something like
the Saturn V's first stage (LOX/kerosene like Falcon 9).

Jeff
--
All opinions posted by me on Usenet News are mine, and mine alone.
These posts do not reflect the opinions of my family, friends,
employer, or any organization that I am a member of.
  #10  
Old June 2nd 20, 12:50 PM posted to sci.space.policy
Jeff Findley[_6_]
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Posts: 2,307
Default Great job SpaceX

In article , says...

On 2020-05-31 10:05 PM, Scott Kozel wrote:
On Sunday, May 31, 2020 at 12:32:42 PM UTC-4, Jeff Findley wrote:
In article ,
says...

On Saturday, May 30, 2020 at 9:24:25 PM UTC-4, Alain Fournier wrote:
Nice launch.

This rocket is a lot bigger than it looks, it is taller than the Saturn 1B and has
greater payload to low Earth orbit.

Yep. Falcon 9/Merlin first stage is quite a bit more advanced than the
Saturn 1B first stage (cluster's last stand) which was made from
existing tanks clustered together and was therefore less mass efficient
than a "clean sheet" would have been.

The upper stages are just different (kerosene on Falcon upper stage
versus LH2 on the Saturn), so hard to tell which one is "better".


Saturn 1B is clearly old technology, I just thought it was an interesting
comparison, that now we have a modern working rocket that exceeds its payload capacity.

Saturn 1B was huge and it dwarfed the Titan 3C, which was a large rocket in its
own right.


...The times they are a'changin....

Of note: I think it was Doug H. that mentioned in yesterday's presser
that F9 2nd stage was a rougher ride than shuttle when on SSME's only.
It might be that combustion flow through the MVac Merlin 1D leads to
more vibration of the engine, but it could also have been due to the
lower overall mass of the vehicle as well. Too bad all the surviving
Apollo astronauts are now too old to fly. I'd love to have had a
comparison. I'd bet $ that F9 is helluva lot smoother ride than a Saturn
5 or a Saturn 1B. Can we talk Walt Cunningham into a free ticket to ISS?
Heck 88 is the new 58 right? I'd get the feeling he'd say, "What? Are we
even moving?" :-)

Dave

PS: Good job SpaceX, looked like a nice ride from what I could see.


I'd guess the Saturn IB and Saturn V would be a smoother ride (same
upper stage really), simply because LOX/LH2 likely makes complete mixing
easier resulting in more complete combustion. But, it certainly would
be more apples to apples than the shuttle due to the in-line stage
design and the single engine. The shuttle had that giant, heavy, ET
structure hanging off the side that likely dampened some of the
vibrations (it certainly did when the SRBs were firing!).

An in-line design is more likely to transmit vibrations straight from
the engine to the capsule with the propellant acting to dampen a bit of
that out. Remember the horrible time NASA had trying to dampen the
vibrations of Ares I? That's about as bad as it gets. Giant SRB in-
line with a smallish upper stage.

Jeff
--
All opinions posted by me on Usenet News are mine, and mine alone.
These posts do not reflect the opinions of my family, friends,
employer, or any organization that I am a member of.
 




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