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 Post subject: Rubber propellors??
PostPosted: Sat Aug 29, 2009 10:35 pm 
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Taken by a friend in SoCal this afternoon..
;)
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 Post subject:
PostPosted: Sat Aug 29, 2009 11:21 pm 
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nope, all props do that as they are approaching thier max RPM. If the max RPM is exceeded all the blades will wrap around to the same side of the hub and set up a imbalance to the point it will cause the engine to be ripped from the airframe.............................

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Jack, You have Debauched my sloth !!!!!!
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 Post subject:
PostPosted: Sun Aug 30, 2009 12:29 am 
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digital photography again-

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PostPosted: Sun Aug 30, 2009 12:57 am 
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The Inspector wrote:
digital photography again-

I don't think so, more a facet of the focal-plane shutter, as used on all sorts of cameras. Seems to be a common 'flaw' with 'phone cameras these days, but was also common with film camera in the early 20th century, as below. Plus ça change, plus c'est la même chose.

http://en.wikipedia.org/wiki/Focal-plane_shutter

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 Post subject:
PostPosted: Sun Aug 30, 2009 8:29 am 
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JDK is wrong. The photo of the car is proof of Einstein's theory of relativity, as the car approaches the speed of light, objects appear to stretch out (warp speed).


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 Post subject:
PostPosted: Sun Aug 30, 2009 8:47 am 
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SO, Thats why auto manufacturers install blue instrument panel lighting, so you just think the car's faster than it really is.................. :wink:

And James, last time I checked my phone, it didn't use any film for the camera, it's digital

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PostPosted: Sun Aug 30, 2009 11:28 am 
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Quote:
JDK is wrong. The photo of the car is proof of Einstein's theory of relativity, as the car approaches the speed of light, objects appear to stretch out (warp speed).


So where's the flux capacitor?

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PostPosted: Sun Aug 30, 2009 11:50 am 
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kalamazookid wrote:
Quote:
JDK is wrong. The photo of the car is proof of Einstein's theory of relativity, as the car approaches the speed of light, objects appear to stretch out (warp speed).


So where's the flux capacitor?


You don't want to know................................

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Jack, You have Debauched my sloth !!!!!!
We tried voting with the Ballot box, When do we start voting from the Ammo box, and am I allowed only one vote ?
Check out the Ercoupe Discussion Group on facebook


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 Post subject:
PostPosted: Sun Aug 30, 2009 12:10 pm 
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If you get your camera to spin at the same RPM as the engines are running, does that make the rest of the plane go rubbery? :shock: Really does make your arms all twisty though!

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 Post subject:
PostPosted: Sun Aug 30, 2009 3:30 pm 
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Flux capacitors hadn't been invented yet when the above photo that JDK submitted was taken. The race car in the photo was powered by Tri-lithium crystals which proved to be very highly toxic. Di-lithium crystals that where discovered about 1500 years later and proved to be much less toxic. The flux capacitor was invented about the same time and was needed for Di-lithium crystals to be used to power many things. I hope this answers your questions. :roll:

I thought everyone knew that...

The rubber propellers where invented to prevent serious injury if a ground person was struck by one...


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 Post subject:
PostPosted: Sun Aug 30, 2009 5:52 pm 
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The Inspector wrote:
And James, last time I checked my phone, it didn't use any film for the camera, it's digital

I think this is a serious remark... Try reading it again. The factor, I believe (open to correction) is the shutter type, not camera or film type.

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 Post subject:
PostPosted: Sun Aug 30, 2009 8:36 pm 
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Consider your leg to have been tugged on vigorously. I really do know the difference between shutters and media types. The 1902 race car photo you've used as an example, the camera was most likely a bellows type and had a shutter speed of about 7 days and about zero for depth of field which is why the car looks like a bauhaus print and the photographer probably used a wet plate or perhaps real cutting edge tin plate as the impression medium. My point is that irregardless of the shutter type being used, digital cannot 'freeze' action sufficiently to prevent 'warp drive' type images so you get the odd looking twisting prop effect. Like I said in another thread in this part of the forum, digital 'movies' of turning propellers do odd visual things like eliminate the 60Hz effect and turn the image of a rotating prop into a series of Monty Python like stop action jerky, non sensical, bizzare images that don't make sense to the processer swinging between your ears because it's not what the mind has been 'trained' to accept and expect so it looks weird and unnatural.

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 Post subject:
PostPosted: Sun Aug 30, 2009 9:00 pm 
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The Inspector wrote:
Consider your leg to have been tugged on vigorously.

Thank you. I'll relocate the joint later... 8)

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"Switch on the underwater landing lights"
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