Question for the history buffs

[SeaCat]

German pilots believed that it would throw off the aim of anti-aircraft gunners. (From Luftwaffe Aces by Franz Kurowski)

[David603]

It makes judging distance harder for the enemy gunners.

[Yossarian]

It is for ground crew to tell if the prop is spinning, so you don't approach the aircraft until it has completely stopped.

Modern aircraft still have it

[Wissam24]

Yeah, it shows that the propeller is spinning....

[The_Goalie_94]

I dont think that a spiral on the little hub in front of the propeller will throw off the enemies aim...no offence, but it seems useless.

[Soviet Ace]

Originally Posted by The_Goalie_94

I dont think that a spiral on the little hub in front of the propeller will throw off the enemies aim...no offence, but it seems useless.

It was useless.

[skullblits]

It was used to scare the Birds away from the..... errrr Thingy ma jingy