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Thread: Rolls ( not the o es you eat!)

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    Senior Member Ski's Avatar
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    Rolls ( not the o es you eat!)

    What is the difference between a loaded and unloaded roll?

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    Member JayPee's Avatar
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    Loaded means a loadfactor higher than the standard 1G. An unloaded roll is just rolling/banking, nothing more. In contrast, a loaded roll means you're rolling/banking as well as pulling, so you are increasing the loadfactor of the aircraft which results in more than 1G load on the jet's body.

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    Member Dojo's Avatar
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    by Jaypee.

    A loaded roll means that additional G force above 1G is applied to the airframe, usually by back stick pressure.

    e.g. think aileron roll (where you literally just rotate the aircraft by pulling directly right or left on the stick, vs. a barrel roll, where you nose up (back stick adding G or "loading the wings", before you start your roll).

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    Retired Pilot Tex's Avatar
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    JayPee and Dojo pretty much covered it. One additional point. The g-meter measures the forces in the cockpit. A loaded roll results in more stress on the wings as they are away from the main body. During a loaded roll near airframe limits, the torsion from rolling in combination with the pull can result in exceeding limits. This causes crew chiefs like Snoopy to have a very bad day and not think highly of said pilot. Or if you really exceed the limit, the pilot has really bad day trouble shooting the wing off light.

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    GOMER 2 Noodle's Avatar
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    ^^this^^

    Thats why there are symmetric and asymmetric g-limits contained in the stores limitation charts found in the -1 and -34. You might see a reduced limiting load factor; a restricted stick throw, i.e. "half lateral stick"; or both.

    Like Tex said, the reduced load factor accomodates the fact that the accelerometer (aka g-meter) measures the load factor at the cockpit, not out at station 1 or 11.

    By the bye, the "wing-off light" and "wing-on computer fail" are two of my favorite phrases.

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    476 vFG Founder Snoopy's Avatar
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    We had a pilot this weekend land code 3 for over G. This same pilot has had an over g the last 4 months straight.

    Needless to say maintenance wasn't happy with him.

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    Member JayPee's Avatar
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    Quote Originally Posted by Snoopy View Post
    We had a pilot this weekend land code 3 for over G. This same pilot has had an over g the last 4 months straight.

    Needless to say maintenance wasn't happy with him.
    What does a land code 3 mean? A code III in our flight log means having ejected ( but not KIA ) so I'm thinking this is a different code 3?

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    476 vFG Founder Snoopy's Avatar
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    Obviously is has a different meaning, it means the jet returns with a red X discrepancy.

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    510th vFS Pilot Trigger's Avatar
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    Quote Originally Posted by Snoopy View Post
    We had a pilot this weekend land code 3 for over G. This same pilot has had an over g the last 4 months straight.

    Needless to say maintenance wasn't happy with him.
    Do you have the same unofficial system as the RAF in that said pilot should report to maintenance with a crate or two of beer by way of apology?

    Remember one of our jockeys overstressing a jet the day before we were due to trail said jet across the pond. Grrrrr
    Last edited by Trigger; 05May15 at 05:40.

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    Member JayPee's Avatar
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    Quote Originally Posted by Snoopy View Post
    Obviously is has a different meaning, it means the jet returns with a red X discrepancy.
    Meaning it has to stay on the ground until fixed and cleared to go up again?

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