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  #11  
Old 01-26-2018, 10:49 AM
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Quote:
Originally Posted by kapton
1.6 million pounds vs 2.8 million pounds excess thrust.
Now tell me the lift off mass of the FH vs the liftoff mass of a Saturn V. Then you can compare accelerations.

I gave you the weights and the thrust. You can convert to weight on earth to mass quite easily.
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  #12  
Old 01-26-2018, 10:52 AM
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Quote:
Originally Posted by tbzep
3.1 million pound rocket with 4.7 million pounds of thrust. 1.6 million pound difference. IIRC, the Saturn V weighed a tad over 5 million and produced 7.8 million, so a difference of nearly 2.8 million lbs. The Falcon Heavy will creep off the pad if that's any indication. It should be really cool...even if it fails!


4.7m lbs thrust divided by 3.1 m lbs rocket = 1.51 Thrust/Weight ratio for FH
7.8m lbs thrust divided by 5 m lbs rocket = 1.56 T/W ratio for Saturn V

Pretty similar... Should look about the same.

1.7m lbs thrust / 1.2 m lbs rocket = 1.41 T/W ratio for Falcon 9 currently flying

If anything, FH should have a little more "giddy-up-go" than the current Falcon 9...

6.78m lbs thrust / 4.47 m lbs rocket = 1.51 T/W for shuttle

Same as Falcon Heavy, so the liftoff should be about the same.

Later! OL J R
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  #13  
Old 01-26-2018, 11:20 AM
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Musk hired 4 guys before Falcon existed from my group for top level positions. Now look what they have done! F'n amazing.

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  #14  
Old 01-26-2018, 12:55 PM
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Quote:
Originally Posted by luke strawwalker
7.8m lbs thrust divided by 5 m lbs rocket = 1.56 T/W ratio for Saturn V


Apollo Saturn V was actually 7.6 / 6.2 m lbs at liftoff for a 1.22 T/W ratio.
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  #15  
Old 01-26-2018, 02:51 PM
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Quote:
Originally Posted by tbzep
I gave you the weights and the thrust. You can convert to weight on earth to mass quite easily.
We need more "polymer people" on here (there's even a fellow named "Propane" who does radio spots promoting that alkane hydrocarbon); "Kapton" made that query to you, but--as far as I know--"Mylar" and "Tedlar" are still unrepresented on YORF (as are "Nylon," "Rayon," "Teflon," "Kevlar," etc.)... :-)
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  #16  
Old 01-26-2018, 11:32 PM
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Quote:
Originally Posted by Royatl
Apollo Saturn V was actually 7.6 / 6.2 m lbs at liftoff for a 1.22 T/W ratio.


See what happens when you quote someone else... LOL OL J R
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  #17  
Old 01-27-2018, 09:46 AM
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Quote:
Originally Posted by luke strawwalker
See what happens when you quote someone else... LOL OL J R

It's just being lazy and using wiki...
At least it got more people to post on this thread than all the other threads combined in a week's time.
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  #18  
Old 01-27-2018, 11:06 PM
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Quote:
Originally Posted by tbzep
It's just being lazy and using wiki...
At least it got more people to post on this thread than all the other threads combined in a week's time.


True... I almost blamed wiki myself since I cheated and looked the other stuff up on there as well, but I saw I quoted you and figured I'd blame you instead...

Later! OL J R
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