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Thread: Spoilers vs. Ailerons for roll control?

  1. #21

    Join Date
    Aug 2011
    Posts
    282
    Quote Originally Posted by FlyingRon View Post
    What, we're not going to talk about wing warping?
    If you'd like to discuss wing warping, it's coming back! actually, everyone would like to do it again as it is much more efficient (if it could be done and still hold fuel, landing gear, flap systems, increased wing loadings, ...). The only drawback would be potentially poor stall characteristics.

  2. #22

    Join Date
    Mar 2013
    Posts
    8
    Good discussion,

    The B52 is spoilers only..limited to 45 degrees of bank I believe. Most airliners have both. T38 was aileron only with a 720deg/sec roll rate. The F4 had both. The C&D and hard wing E had serious adverse yaw issues at high AOA...the down aileron would just increase drag and pull the jet out of control.

    At low AOA the aileron rules in roll, high AOA, the spoiler works better. (or rudder in the F4's case). An AOA or flap lever derived lockout for ailerons? The DC10 and 767 have a second aileron that works at lower speeds. Flap position or airspeed is used lock/unlock the extra aileron in those if I remember correctly.

    Not an aero engineer but I did teach high school Physics 20 years ago.

    Jake

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