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Helicopter Crash?... I Don't Know....

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Comics Nice Funny Crashes Accidents Helicopters
maliikk
  • By: maliikk
  • Subscribers: 7
  • Updated: 24-Jul-07
  • Videos: 108
  • International International
  • Comments: 10
  • Views: 46,398
  • Added: 02-Jun-07

how is helicopter fly?....

  1. Categories: Comedy, Wheels & Wings
  2. Favorite On: juju777
Comments on

Helicopter Crash?... I Don't Know....

10 Comments | Add Comment
  • can any smart ppl

    tell us whats gong on?

    By NAtdni 1185348739 Reply Spam [+1] Moderate Up Moderate Down
    • It's a "video effect"

      This is an illusion created by the effect of video-taping objects in motion. Since the shutter speed of the camera rotates at a particular frequency, and the blades of the helicopter also rotate at a particular frequency, the camera is only going to capture the degree to which the two frequencies are "out of phase" with one another. In the case of this video, it seems that the two are rotating at roughly the SAME frequency (I'd say, about 30 frames per second), meaning that the overhead blades are going to APPEAR to remain motionless. It's a illusion, a video effect. (Same reason why, for instance, car wheels sometimes appear on film to rotate in reverse as they're slowing down.)

      By Trancecoach 1185639197 Reply Spam Moderate Up Moderate Down
    • rong

      rong

      By thecaveman20bc 1215282400 Reply Spam Moderate Up Moderate Down
  • it wusnt hard to figure this out

    Dude i have seen this vid. i have an idea on how its doin this. the heli has been slung under another helicopter and as it swings through the air the back rotor is pushed be the air passing by it.

    By thecaveman20bc 1215282333 Reply Spam Moderate Up Moderate Down
  • I know

    he is using a special camers , the speed of this camera is the same of the fan speed (sychronized camera )

    By os7078090 1186130202 Reply Spam Moderate Up Moderate Down
  • clarification

    The main rotor turns at a rate quite a bit faster than 30fps.

    The effect that most have noted (periodic motion freezes when the rates are matched, also holds true then the motion frequency is a multiple of the sampling frequency. In this case, assuming the frame rate of the camera is 30 (it may not be...) the rotor RPM is likely to be 180, or 6x the sampling rate.

    By softboyled 1185690906 Reply Spam Moderate Up Moderate Down
  • Interesting

    Nice effect. But seeing as this video is probaly running 30 fps and the blades are spinning at 30 rps it only makes sence but it does look cool

    By abeisgreat 1185259617 Reply Spam [-1] Moderate Up Moderate Down
  • wtf

    wtf

    By 2007_Agent 1180978669 Reply Spam [-1] Moderate Up Moderate Down
  • It's a repeat

    and by the way - it only looks like it's still because it's moving at the same rate as the frame rate on the camera...

    By Akhy 1180793205 Reply Spam [-2] Moderate Up Moderate Down
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