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WOLFPLAYER2007
09-07-2008, 05:30 PM
Why the germans painted spirals on the spinners of their aircrafts? it is something to disturb the enemy psychologicaly like the shark mouth on some american planes or what?

WOLFPLAYER2007
09-07-2008, 05:30 PM
Why the germans painted spirals on the spinners of their aircrafts? it is something to disturb the enemy psychologicaly like the shark mouth on some american planes or what?

berg417448
09-07-2008, 05:34 PM
The purpose was probably to give ground personnel a visual cue that the engine was turning in order to prevent accidents when they were working near rotating props.

ImMoreBetter
09-07-2008, 07:44 PM
... And because it looks neat.

general_kalle
09-08-2008, 12:38 AM
read some where that some germans believed that they would confuse the enemy pilots and gunners,
when looking at the plane from the front

Uufflakke
09-08-2008, 02:48 AM
The purpose of this pattern is to provide ground personnel with a visual cue that the engine is actually turning. This simple warning is an important safety feature that can often prevent tragic accidents when personnel are working near rotating engines. This precaution dates back to at least the 1930s when spirals appeared on the spinners of many propeller-driven aircraft. Otherwise, a propeller rotating at high revolutions per minute can become nearly invisible and very difficult to see to an observer on the ground.

The above quote comes from this site:

http://www.aerospaceweb.org/question/propulsion/q0233a.shtml

bill_1202
09-08-2008, 03:47 AM
I can tell all of us that as a C-130 crew chief is that the reason is you can get hyptomised on the tarmack and want to to walk towards the blades (the source) at night with the light carts lighting up the environment at night. Not good a good saftey issue. The pilots do not care about any of this. In fact, it that it distracts them in flight.

So there has been a lot of studies throughout the years on how to paint the prop tips and what color to paint them.

Current USAF procedures are black.

Chris0382
09-08-2008, 05:03 AM
The spinning prop would hypnotize its foe entising the foe to fly directly towards the prop.

buzzsaw1939
09-08-2008, 10:43 AM
Doesn't matter what you paint on a prop spinner, you wont see it at anything above idle!

DKoor
09-08-2008, 10:46 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Chris0382:
The spinning prop would hypnotize its foe entising the foe to fly directly towards the prop. </div></BLOCKQUOTE> http://forums.ubi.com/images/smilies/88.gif

Chris0382
09-08-2008, 10:50 AM
Nice to see someone with a sense of humor LOL

Aaron_GT
09-08-2008, 11:37 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Doesn't matter what you paint on a prop spinner, you wont see it at anything above idle! </div></BLOCKQUOTE>

The fact that you can't see it as anything other than a blur when the prop is spinning is the point. If you see a spiral, it's not moving. If it is spinning visibly, prop is at low revs, if a blur, high revs. Painting circles or lines on the spinner doesn't manage all of these nearly so well.

buzzsaw1939
09-08-2008, 02:01 PM
Right on Aaron! http://forums.ubi.com/images/smilies/25.gif

MB_Avro_UK
09-08-2008, 02:36 PM
Hi all,

The WW2 Dornier 24 three-motor Flying Boat also had spirals on the spinners.

It was to protect the ground crew and not to 'dazzle' bomber gunners...

http://img.photobucket.com/albums/v82/MB_Avro/lwredding2c.jpg


Best Regards,
MB_Avro.