View Full Version : Why?
TIMTS
10th Dec 2004, 01:26
The picture is taken at TNCM and is a 737 BBJ. The question is: Why does the spinner have this white twisting line painted on it? Just for looks or does it have a purpose?
http://img.photobucket.com/albums/v381/HeliKen/PPRUNE/PICT0216.jpg
simfly
10th Dec 2004, 01:29
You'll find that most turbo fans have this, it helps show whether the fan is turning or not for a start...
TIMTS
10th Dec 2004, 01:57
ok..makes sense..thanks.
Is it just me or is this thing just a beautiful piece of engineering?
http://img.photobucket.com/albums/v381/HeliKen/PPRUNE/PICT0217.jpg
This one is not far behind!!
http://img.photobucket.com/albums/v381/HeliKen/PPRUNE/PICT0228.jpg
SeldomFixit
10th Dec 2004, 05:17
There was/is a theory that it helps deter birdstrikes by oscillating and giving the hapless avion something to see/avoid.
Definitely helps se/avoid for any hapless plod that thinks getting up close and personal at the wrong time might be fun :ok:
Hay Ewe
10th Dec 2004, 05:50
There is already at least one thread on pprune about this- I dont know how to post a link to a search. from memory, it is a visual thing for ground people, with all noise on the ramp / stand call it what ever it is a visual clue
Hay Ewe - take a look at this