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Old August 21st 10, 02:26 PM posted to rec.aviation.rotorcraft
Peter Dohm
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Posts: 1,754
Default vibration measurement system

"Peter Dohm" wrote in message
...
"Stu Fields" wrote in message
.. .

"Jim Logajan" wrote in message
.. .
"Stu Fields" wrote:
I have heard that there is a down loadable application for the Iphone
that can produce 3 axis vibration measurements and store them for
analysis on my computer. EEK!! I said "How Much" and the guy said
499. I said sold!! $500 is cheap for that capability and the guy said
"No $4.99"!!! I'm still waiting for a friend of mine to evaluate this
ability on his Enstrom Helo.... Geesh if it will handle the low
frequency vibration analysis, I will buy an Iphone for nothing else.

Stu Fields the excited and maybe gullible?

Is this that the app described here?:

http://itunes.apple.com/app/vibration/id301097580?mt=8
http://www.macresearch.org/showcase-...ctrum-analyzer

Or here?:
http://prmac.com/release-id-12044.htm

The latter is priced at $1.99. You could save 40%!! ;-)


Thanks Jim. I hadn't looked up the app yet. I wish the 100hz sample
rate was more like 1khz, but it does look like it will do some of what I
want in my helicopter.
Stu

I wonder if the app writers are taking advantage of a "feature" that may
have been included to evaluate warranty claims--and possibly to reject the
claim if the customer "spiked" the phone...

Peter



Oops, sorry, I forgot to look at the date!

Peter