1. Auto speedbrake deployment idea.
      Auto speedbrake deployment idea.

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      Registered: April 2007
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      Somewhat unclear images, but here's the idea:
      A DC motor with a small wheel drives a large wheel with an arm mounted onto it (the large grey wheel on the right side). From this arm, a linkage is connected to a bell-cranck. The bell cranck will transfer horizontal movement into vertical movement.
      The main thing here is that the linkage is connected to an oval slot in the bell-cranck.

      When the spoiler arm is down and in detent, the arm can't move. We need to raise it. The process:
      The motor starts turning, and the linkage will move to the end of the oval slot in the bell-cranck. Then the bell-cranck will raise the spoiler lever, thus making it possible to deploy it.
      When the spoilers are stowed again, the motor moves the linkage back to the start of the oval slot in the bell-cranck. When the spoiler arm has moved to the foremost position, it will automatically go into detent.
      If one mounts a ball-bearing to the spoiler arm, making the ball-bearing move on the metal track, this should work very well. Please feel free to comment and give suggestions.
      Date: Sun April 5, 2009 Views: 2,530
      Filesize: 153.1kb Dimensions: 1024 x 455
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