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"Adverse yaw and roll coupling"

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Mike_Greenwood

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10. "RE: Adverse yaw and roll coupling"
11-19-02, 04:49z

Hi Ben,
>>My question is given the reaction of adverse yaw with the application of
aileron, why doesn't an airplane react in a similar way when rudder is
applied (with a pitch up)?<<
This is from a non-pilot as you know, so bear with me <g>. My understanding is that the adverse yaw condition is caused (assuming a left bank) by the right wing generating more lift (aileron down) hence more induced drag than the left wing. That induced drag makes the plane yaw to the right....correct?
Now, in a knife edge configuration, the rudder acts alone to pitch the airplane "up." Since it's a purely vertical move, I wouldn't expect yaw (along the defined "pitch" axis) at all. Similar to moving the elevator in level flight to pitch up. However, I *would* expect a roll tendancy to the upper side of the low wing. In other words if you were in knife edge flight with the left wing pointed to terra firma, and pitched up with rudder, I'd expect the airplane to tend to roll to the right due to the increased airflow over the lower wing.
Just my common sense thoughts...
--Greenie
**6 miles SSE KSJC**
-= VPC OffLine Reader 2.1 =-
Registered to: Mike Greenwood
-OLR.PL v1.80-

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Table of Contents

  Subject      Author      Message Date     ID

Adverse yaw and roll coupling    Ben_Chiu    11-16-02

   RE: Adverse yaw and roll coupling    Tarmack    11-18-02    1

      RE: Adverse yaw and roll coupling    Ben_Chiu    11-18-02    4

           RE: Adverse yaw and roll coupling    djpacro    11-19-02    9

                RE: Adverse yaw and roll coupling    Ben_Chiu    11-19-02    14

           RE: Adverse yaw and roll coupling    Mike_Greenwood    11-19-02    10

                RE: Adverse yaw and roll coupling    DHamblin    11-19-02    12

                RE: Adverse yaw and roll coupling    DHamblin    11-19-02    13

                     RE: Adverse yaw and roll coupling    Ben_Chiu    11-19-02    16

                RE: Adverse yaw and roll coupling    Ben_Chiu    11-19-02    15

                     RE: Adverse yaw and roll coupling    djpacro    11-25-02    21

                          RE: Adverse yaw and roll coupling    Ben_Chiu    11-25-02    22

   RE: Adverse yaw and roll coupling    DHamblin    11-18-02    2

      RE: Adverse yaw and roll coupling    Ben_Chiu    11-18-02    5

           RE: Adverse yaw and roll coupling    DHamblin    11-18-02    7

                RE: Adverse yaw and roll coupling    Mike_Greenwood    11-19-02    11

                     RE: Adverse yaw and roll coupling    AlanParkinson    11-22-02    19

                          RE: Adverse yaw and roll coupling    Mike_Greenwood    11-23-02    20

                RE: Adverse yaw and roll coupling    Ben_Chiu    11-19-02    17

   RE: Adverse yaw and roll coupling    IFLYExtra300S    11-18-02    3

      RE: Adverse yaw and roll coupling    Ben_Chiu    11-18-02    6

           RE: Adverse yaw and roll coupling    Tarmack    11-18-02    8

                RE: Adverse yaw and roll coupling    Ben_Chiu    11-19-02    18

           RE: Adverse yaw and roll coupling    ghmorris    12-01-02    23

                RE: Adverse yaw and roll coupling    ghmorris    12-01-02    24

                RE: Adverse yaw and roll coupling    Ben_Chiu    12-01-02    25

                     RE: Adverse yaw and roll coupling    ghmorris    12-02-02    26

                          RE: Adverse yaw and roll coupling    Ben_Chiu    12-02-02    27

                               RE: Adverse yaw and roll coupling    ghmorris    12-02-02    28

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