Flicker Vertigo

hz2p · Post by **hz2p** » Fri Feb 25, 2005 1:45 pm

Enlighten me, oh wise ones, as to what "everybody knows", and the nonsense Transport had us repeat for years.

Flying Low · Post by **Flying Low** » Fri Feb 25, 2005 1:55 pm

Last I heard about that one was that it has quietly disappeared from the TC curriculum (sp?). The few cases that were attributed to "flicker vertigo" were actually traced back to people suffering from mild epilepsy.

This is all third hand info so if someone has something concrete confirming the above or otherwise I'd like to hear it.

peeelot · Post by **peeelot** » Sat Feb 26, 2005 7:11 am

If you are landing into a setting sun and look through the prop that will cause it.

Benwa · Post by **Benwa** » Sat Feb 26, 2005 8:17 am

Welcome to the real world peeeelot.

Ever landed into the setting sun ?

No Conflict · Post by **No Conflict** » Sat Feb 26, 2005 8:40 am

Ever landed into the setting sun ?

I've landed into the sun (NO, not actually INTO the sun, you know what I mean

), and a few times at sunset

Never actaully experienced it, mostly it's just the flicker that's annoying. Last I heard, possibly not true, is that there is no such thing.

The few cases that were attributed to "flicker vertigo" were actually traced back to people suffering from mild epilepsy.

I heard the same.

5x5 · Post by **5x5** » Sat Feb 26, 2005 11:48 am

Here's an interesting link that talks about flicker vertigo - and a bunch of other interesting conditions as well.

http://www.vnh.org/FSManual/09/09Percep ... rders.html

. . · Post by **. .** » Sat Feb 26, 2005 12:32 pm

obviously you don't get it every time you land into the sun. I think it's very angle and prop condion specific. I did have a definate flicker effect one time on approach into the sun with a Caravan. The torque was perhaps 300lbs so the prop was in about a corase a setting as possible in flight. There was a very pronounced flicker effect. I didnt' experience any urge to bank with the prop or make pitch movements. I do see how if it had been more severe an illusion might be convincing.

Benwa · Post by **Benwa** » Sat Feb 26, 2005 3:52 pm

You will see a flickering effect quite often at night while taxiing... but we're talking VERTIGO here.

By the way, it's a good way to check your tachometer...

peeelot · Post by **peeelot** » Sat Feb 26, 2005 8:46 pm

Sorry I was mistakened Flicker Vertigo is as stated Results from the strobe effect caused by looking through a windmilling prop into the sun

Shiny Side Up · Post by **Shiny Side Up** » Sun Feb 27, 2005 11:15 am

...or watching Japanese cartoons.

shitdisturber · Post by **shitdisturber** » Sun Feb 27, 2005 8:55 pm

You watch "The Simpsons" waaay too much!

Shiny Side Up · Post by **Shiny Side Up** » Mon Feb 28, 2005 10:40 am

You know only by watching The Simpsons too much would you get where that comes from...

shitdisturber · Post by **shitdisturber** » Mon Feb 28, 2005 12:32 pm

Yeah but I admit I have too much free time on my hands; besides, I'm trying to cut down.