Osprey aircraft takeoff at Farnborough Air Show 2006

[MeteoricDragon]

I know that the camera effect is causing the blades to look like they're not really spinning, but it looks kind of cool like that.

[2430liney]

It's called temporal aliasing or the stroboscopic effect!

[longdan1]

Wow - a mew type of aircraft that doesn't actually need the blades to turn to make it fly :)

[BungYung]

The blades and camera are in synchrony like the spokes of the wagon wheels in the old wild west movie. The shutter speed used to be 16 frames and sometimes the spokes of the wagons were at a speed when 16 spokes passed a point in one second. The wheels actually looked like they weren't turning.

[benfalas]

I think is like a camara efect, becouse the blades move but very slowly (at less thats what we see) but acctually the blades are moving so fast that the camara doesent ''see'' it.

I think that may be. A camara efect.

[Chopper125]

the camera frame rate makes it look as though the blades arent moving

[BipedalMammal]

Youtube is full of uneducated idiots. People knew of this effect a century ago, yet modern day people are STILL this ignorant?

It's all about FPS and RPM. If you match the two properly, this is what you get. Every time the shutter on the camera opens, the rotors have made 1 revolution, and are back in their starting position. They appear to be stationary, because YOU ONLY SEE WHAT THE CAMERA SEES.

Open a book once in awhile!

[greymon54]

i know wat happened!!

those planes dont need the propellers cos of there wings, but if it wants to land or go fast they use propellers

[PWN3GE]

Um, you do realize that wings don't produce thrust right? The osprey uses those two propellers as it's main propulsion source. This phenomena was created by the camera's shutter speed being the same as the osprey's propeller speed.

[Gruntol5]

You need another 20 years of going to school.

[rensisgewoongoed]

it has happend before watch this vid;'

HOW the fuck is this helicopter flying?

[riserunrest]

You need a gun that can shoot where it is going not where it has been. You need a caliber that is not the same as a .30-06 hunting rifle. Why do you need these things? To suppress enemy fire when you have to land and take off especially when its primary use is to transport marines. 45 Marines have died in 143 accidents even before it went to the warzone of Iraq.

[thrillbilly2]

Very neat technology, I just went to an airshow today and saw one of these for the first time.

[Gruntol5]

That's a pretty unique piece of film there. I wonder whether this coincidence of rotation speed and camera frame rate has occurred before. We've all seen wheels apparently going backwards or stationary on cars in film. Assume that normal prop speeds are too fast, helicopter rotor speeds too low, but Osprey just right to get this effect.

[legalex7]

what the hell??

[fizzychops]

Man that is freaky!

[Meirele]

Is it me or there something wrong here.

[berendharmsen]

rotation of props is in phase with framerate of camera

[Meirele]

Ah ! Ok, now I hava a confirmation...I was not that drunk ! LOL

Thanks for the explanation. I've never seen such sincronization...

[BipedalMammal]

Wow, someone with a functioning brain on Youtube...