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最新回复 发布由 Crowbar

    Top THAT, Longbow!

    在 Lock On: Flaming Cliffs 1 & 2

    发布于

    Again, there's no motion blur in that. I work in video post production house and well aware of the strobe effect.

    I guess you didn't check my link.

     

    So here is another:

     

    The movie is a series of still pictures that flash on and off 24 times every second. That's plenty fast enough for your brain to think the motion is continuous because your eyes can't see the separate frames. No finite sampling rate, however, is fast enough to capture the true continuous motion.

    The wagon wheels can even appear stationary: Suppose the movie camera snaps a frame and the wheel turns just enough in the 1/24th of a second before the camera snaps the next frame so that the next spoke has rotated into the position of the first spoke. Then the camera snaps another frame. The second frame looks identical to the first frame even though the individual spokes are in different positions because all the spokes look alike and they line up with the first-frame positions. At this wagon speed, the wheel doesn't seem to be turning at all in the movie.

    If the wheel turns a little faster than this, the spokes seem to slowly move forward. That's because the second spoke, going a little fast, went by the position of the first spoke by the time the camera snapped the second frame. If the wheel turns a little slower, then the spokes appear to move slowly backwards.

    Thus, wagon wheels can appear to move backwards, then forwards as the wagon picks up speed. If the wagon slows down, the wheels can seem to change direction again and go backwards. It all depends on how fast the camera snaps frames relative to the wagon wheel speed.

    (Answered by April Holladay, science correspondent, October 17, 2001)

    Just 7 G's...

    在 Lock On: Flaming Cliffs 1 & 2

    发布于

    Why don’t the pilots wear G-suits?

    G-suits are designed with air bladders (pockets) that inflate and deflate to keep a pilot’s blood from pooling in the pilots’ legs while executing sharp, unpredicted combat maneuvers. Unlike combat flying, the Blue Angels demonstration pilots know the maneuvers they will fly prior to execution, so each pilot knows when one will be pulling heavy gravitational forces. Anticipating the changes in gravitational forces allows the Blue Angels demonstration pilots to combat the G-forces with muscle contractions. In addition, the Boeing F/A-18’s control stick is mounted between the pilot’s legs. The Blue Angels have a spring tensioned with 35 pounds of pressure installed on the control stick that gives the pilot a “false feel.” This allows the pilot minimal room for uncommanded movement. The pilots rest their right arms on their thighs for support and stability while flying. Therefore, inflating and deflating air bladders in a G-suit would interrupt this support and stability, causing uncommanded aircraft movement. In this case, G-suits would detrimentally impact flight safety.

     

    Why, oh why the movie ends at it's climax :doh:

    Skin requests for F-15

    在 3D Modeling for DCS World

    发布于

    I'd love to see skins of these F-15C squadrons:

    • 27th FS Fighting Eagles Langley AFB, VA
    • 71st FS Ironman Langley AFB, VA
    • 58th FS Gorillas Eglin AFB, FL
    • 60th FS Fighting Crows Eglin AFB, FL
    • 85th TES/79th TEG Eglin AFB, FL
    • 390th FS Wild Boars Mountain Home AFB, ID
    • 1st FS Griffins Tyndall AFB, FL
    • 2nd FS Second to None Tyndall AFB, FL
    • 95th FS Mr Bones Tyndall AFB, FL
    • 44th FS Vampires Kadena AB, Okinawa
    • 67th FS Fighting Cocks Kadena AB, Okinawa
    • 19th FS Fighting Gamecocks Elmendorf AFB, AK
    • 54th FS Fightin' 54th Elmendorf AFB, AK
    • 493rd FS Grim Reapers Lakenheath AB, England

    :thumbup:

    How to design cockpit?

    在 3D Modeling for DCS World

    发布于

    Well... I am kinda tired of your posts, so here I reply:

    Radar range 110 km

    Is that nominal radar range or effective tracking range for target of certain RCS?

    If it's nominal than early AN/APG-63 radar had the range of 100 nm (185 km) so nothing really exciting :dontgetit:

    If it's tracking range than what kind of target does it track at that range?

    New AN/APG-63(v)3 radar can track a target of RCS = 1 m² at 144 km.

    40~60% stealth

    What do you mean by that? That the plane you are talking about is 40~60% stealth? Wow... :doh: Than it's not stealth at all :megalol:

    can attack 4 target in the same time

    Another 'wow'... For AN/APG-63(v)3 it's 20 targets...

    Ha!Ha!Ha!

    :doh:

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