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Scale weight - thru the coffee table!

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  • Member since
    January 2003
  • From: Everywhere
Posted by stinger on Monday, August 4, 2003 10:20 PM
Demon - Truly appreciate your knowledge. "Close to" (the speed of light), and "as yet unmeasured" (mass) are the key words there. Einstein still has not been proven wrong. Then again, in calculus, I did have to take that leap of faith about Lim 1/n, as n approaches infinity, = 0. So, basically, I can concieve of "Warp speed, Mr. Zulu", but we're not there yet. (Or are we?)
Thanks for making us think - Stinger

May an Angel be your wingman, and the Sun be always at your six

  • Member since
    November 2005
Posted by Anonymous on Monday, August 4, 2003 9:48 PM
This conversation is insane. And I thought Quantum Physics was hard to follow.

Muzzleflash, time cannot be scaled, as time is an abstract created by men so it gives us an excuse to yell at women for being late for a date.

As for mass, using Einstein's formula E=mc2, where m=mass and c=the constant of the speed of light, as something accelerates due to a constantly increasing energy, mass would become infinite. However, that has been disproven by the existence of anti-protons and anti-neutrons, which travel close to the speed of light with an as yet unmeasured mass.

Einstein's theory wasn't wrong, just incomplete.

Plesae remeber to tip your waitress.

demono69
  • Member since
    January 2003
  • From: Everywhere
Posted by stinger on Monday, August 4, 2003 9:28 PM
Ok - So I didn't get the Memo on the Rooster Booster thing (I must have been in Physics class that day). Is it any thing to do with an increase in engine performance due to the ingestion of birds, or just what the heck is it? I thought that was what brought down at least one B1.
(I am obviously reaching for thought here).
I can hear all of you who know cackling out there.
Please give us a clue

May an Angel be your wingman, and the Sun be always at your six

  • Member since
    November 2005
Posted by Anonymous on Monday, August 4, 2003 9:05 PM
Can't scale time either. So you can scale wing size down to a model, but time cannot be scaled.

Good topic though, and the rooster booster is fine as long as you THAW the birds first :P

  • Member since
    November 2005
Posted by Anonymous on Monday, August 4, 2003 8:54 PM
QUOTE: conversely it will also reach mach II at at a poultry 20 mph / 33 kmh


So sound must travel slower coming from a smaller speaker?
It doesn't matter how big something is, it still must travel at 740 mph (approx) to reach mach 1.

QUOTE: Your "poultry" comment got me wondering about an actual meeting of chickens and aircraft, anyone else heard of the "Rooster Booster?"


Yep, pretty cool.
  • Member since
    January 2003
  • From: Everywhere
Posted by stinger on Monday, August 4, 2003 8:44 PM
Kubai - PS : Mass cannot conversely reach an infinitely positive level, otherwise we would be traveling at warp speed, right?

May an Angel be your wingman, and the Sun be always at your six

  • Member since
    January 2003
  • From: Everywhere
Posted by stinger on Monday, August 4, 2003 8:39 PM
Kugai - Of course! How stupid of me. If I had thought about volume I would have seen it. That third dimension changes so many things, doesn't it? I must be watching too much TV, and staring at my laptop screen for too long! Interesting that nothing in Einsteins world could never exist in only two dimensions because our third dimension would have to reach infinity, which, so far as we know, is impossible, because mass therefore would be reduced to zero, which cannot happen even on the atomic level.
Is that close enough for an A in that physics lesson?

May an Angel be your wingman, and the Sun be always at your six

  • Member since
    November 2005
Posted by Anonymous on Monday, August 4, 2003 8:16 PM

stinger,
Weight is proportional to mass, which is proportional to volume, volume is proportional to the cube of a linear distance, which is the ratio 1/72.

A cube with a side of 3 has volume of 27. A cube with a side 4 has a volume of 64. The ratio of their volume is (64/27) which is (4/3)^3.
  • Member since
    January 2003
  • From: Everywhere
Posted by stinger on Monday, August 4, 2003 8:09 PM
Kugai - I must have missed something in college physics (like I ever went to class at all). Could you please briefly expalin your cubist theory? Thanks, Stinger

May an Angel be your wingman, and the Sun be always at your six

  • Member since
    July 2003
  • From: Huntington, WV
Posted by Kugai on Monday, August 4, 2003 5:47 PM
BTW: I forgot to mention this...

Your "poultry" comment got me wondering about an actual meeting of chickens and aircraft, anyone else heard of the "Rooster Booster?"Big Smile [:D]

http://i712.photobucket.com/albums/ww122/randysmodels/No%20After%20Market%20Build%20Group/Group%20Badge/GBbadge2.jpghttp://i6.photobucket.com/albums/y211/razordws/GB%20Badges/WMIIIGBsmall.jpg

  • Member since
    July 2003
  • From: Huntington, WV
Posted by Kugai on Monday, August 4, 2003 5:44 PM
Sorry, migs, but you missed somethingWink [;)]. When figuring scale, the weight would be figured by cubing the scale. The linear dimensions are 1:72, but weight would be 1:(72x72x72), or 1:343,248

So, your example would be for a fighter weighing 14,400kg. The "scale weight" would be about 38.5g. For a specific example, a 1:72 F-14 would weigh a little more than 90g ( about 3 ounces for you non-metric folks ) at max takeoff wt. A plane weighing 200kg in 1:72would have a real-life weight of over 74,000 metric tons ( besides, what on this earth is dense enough to weigh 200kg for the volume of a 1:72 scale airplane? )

http://i712.photobucket.com/albums/ww122/randysmodels/No%20After%20Market%20Build%20Group/Group%20Badge/GBbadge2.jpghttp://i6.photobucket.com/albums/y211/razordws/GB%20Badges/WMIIIGBsmall.jpg

  • Member since
    November 2005
Posted by Anonymous on Monday, August 4, 2003 5:00 PM
Hmm.. WOnder what that Gustav would weigh..
  • Member since
    November 2005
Posted by Anonymous on Monday, August 4, 2003 4:51 PM
hahahahahahah migs...i gotta say your post cracked me up....when you said "poultry 20mph" I suspect you meant "paltry" as in contemptible...but I really like the idea that it would fly like a big fat chicken!
  • Member since
    November 2005
Scale weight - thru the coffee table!
Posted by Anonymous on Monday, August 4, 2003 4:47 PM
Ever wondered what your models should weigh in scale ? calculator at the ready you will find it suprisingly heavy - 200 kg
for an average modern fighter in 1:72 ! - conversely it will also reach mach II at at a poultry 20 mph / 33 kmh - anyone suggest other area's where the scale maths gives odd or suprising results Question [?]
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