Will 10lbs of thrust lift a 10lb rocket in the air or is it a different formula?
What are you doing with a gun in space?
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| Author: | joeranger [ Sat Apr 21, 2007 11:42 pm ] |
| Post subject: | Rocket science |
Will 10lbs of thrust lift a 10lb rocket in the air or is it a different formula? What are you doing with a gun in space? |
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| Author: | Harry Harris [ Sun Apr 22, 2007 1:17 am ] |
| Post subject: | Re: Rocket science |
Newton's third law staes that "For every action, there is an equal and opposite reaction." Technically 10lbs of thrust shouldn't lift 10lb rocket as you'd need to account for the weight of the rocket. If the rocket weighs say 5lb then 5lbs of thrust should make it 'weightless', 16lbs should just about get it off the ground. Add more thrust for more lift. Harry [img]http://www.triotech.demon.co.uk/hhacabanner.gif[/img]Edited by: [url=http://p220.ezboard.com/bthealienslegacy.showUserPublicProfile?gid=harryharris>Harry Harris[/url] at: 4/23/07 8:42 am |
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| Author: | JediFraz [ Mon Apr 23, 2007 10:29 am ] |
| Post subject: | Re: Rocket science |
Escape velocity calculation ----------------------- My WebPage... Of d00m! It's the 21st Century and where are the flying cars...?? -I was *promised* flying cars..... |
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| Author: | Wookiee Gunner [ Mon Apr 23, 2007 3:36 pm ] |
| Post subject: | Re: Rocket science |
Why would it take 16lbs of thrust to lift a 5lb rocket? Since thrust is counteracting gravity, shouldn't it take 6lbs? Thrust-Rocket Weight (6-5) equals effective thrust. Or am I oversimplifying (sorry, I'm not the rocket scientist in my group, that would be my buddy). |
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| Author: | Harry Harris [ Mon Apr 23, 2007 3:43 pm ] |
| Post subject: | Re: Rocket science |
Quote: Quote:Why would it take 16lbs of thrust to lift a 5lb rocket? Because I made a typo! Harry [img]http://www.triotech.demon.co.uk/hhacabanner.gif[/img] |
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| Author: | Siderwinder forge [ Mon Apr 23, 2007 3:45 pm ] |
| Post subject: | Re: Rocket science |
Not a good idea in rocket science Harry.  SAS Anything that, in happening causes itself to happen, happens again.Edited by: [url=http://p220.ezboard.com/bthealienslegacy.showUserPublicProfile?gid=siderwinderforge>Siderwinder forge[/url]  at: 4/23/07 1:07 pm |
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| Author: | Bug Stomper [ Mon Apr 23, 2007 8:04 pm ] |
| Post subject: | Re: Rocket science |
Ok, just for a little nitpicking: Thrust would be lbf or N and mass is lbs or kg - this is often confused. Cheers, Stefan |
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| Author: | Harry Harris [ Mon Apr 23, 2007 8:07 pm ] |
| Post subject: | Re: Rocket science |
I just answered the question dude!  Harry [img]http://www.triotech.demon.co.uk/hhacabanner.gif[/img] |
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| Author: | Ripstick [ Mon Apr 23, 2007 11:49 pm ] |
| Post subject: | Re: Rocket science |
Okay -- air-speed velocities, typos, and nitpicking aside... you guys are missing the most obvious question: <span style="font-size:medium;]What are you building Joe? Rick "Ripstick" [img]http://www.propguild.com/ripstick/Ripstick_Aliens_Legacy_Banner_2007.jpg[/img] |
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| Author: | Rook 3 [ Tue Apr 24, 2007 1:10 am ] |
| Post subject: | Re: Rocket science |
Okay, admit it: You just saw "The Astronaut Farmer" didn't you? Russ 
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| Author: | falken1o8 [ Tue Apr 24, 2007 1:11 am ] |
| Post subject: | Re: Rocket science |
Ok..I'll bite what are ya making Joe ?? Scott |
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| Author: | tonyandcherie [ Tue Apr 24, 2007 3:18 am ] |
| Post subject: | Re: Rocket science |
It doesn't matter, the Government already knows because he's not wearing his aluminum foil helmet!! [img]http://www.colonialmarines.net/Banner.jpg[/img] |
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| Author: | WDImagineer2b [ Tue Apr 24, 2007 12:57 pm ] |
| Post subject: | Re: Rocket science |
What is it with aluminium foil helmets at the moment?  That same quote came up on the Steel guitar forum the other day! |
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| Author: | Siderwinder forge [ Tue Apr 24, 2007 1:03 pm ] |
| Post subject: | Re: Rocket science |
[img]http://www.agirlsworld.com/rachel/beat-street/reviews/pix/signs2.jpg[/img] Anything that, in happening causes itself to happen, happens again. |
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| Author: | joeranger [ Tue Apr 24, 2007 2:07 pm ] |
| Post subject: | Re: Rocket science |
It is going to be good, hopefully I will have time to work on it this weekend. I am going to document the process. What are you doing with a gun in space? |
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| Author: | joeranger [ Tue Apr 24, 2007 2:10 pm ] |
| Post subject: | Re: Rocket science |
Here is what I was looking for NASA thrust caculator What are you doing with a gun in space? |
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