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Hoversite 2003 |
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Page 5 |
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Thrust Duct, Rudders & Lift Wing and the Control System (our own design)... |
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Above, the thrust duct is glued into place using a full can of "Great Stuff" expanding foam. We used the prop on its shaft as a guide to help locate the duct.
The rudders and lift wing can be seen under construction to the left. |
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The tail assembly takes shape. |
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In the photos to the right and below you can see the elements of our unique control system. Instead of cables and pulleys, we used a single torque-tube running all the way to the back of the rudder. An actuator rod extends from the tube directly to the back of the rudder.
The control stick is made entirely from EMTfittings - no welding required.
As you can see, the torque tube is off center (there was not enough room under the engine). To route it through the thrust duct, we placed a 1" dia EMT guide tube down there before foaming the duct in place. |
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A one-piece torque tube extends through the thrust duct to back of rudder. |
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Full right rudder |
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For the trim wing control, we used a separate actuator cable with a lockable T-handle -- purchased from an auto parts store. Pull up to raise bow, push down to lower it.
Separating the the yaw and pitch controls in this way greatly simplified the stick design.
For the throttle, we used a bicycle brake handle and cable assy. |
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The cockpit showing controls |
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Torque tube and engine cables routed aft |
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The tail end showing details of the torque tube rudder control system |
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Continue on to Page 6
Maiden Flight,
Trailer starts to take shape... |
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The 5/16" actuator rod runs up through a hole in a 1/8" aluminum plate attached to the back of the rudder. It's kinda crude, but so far, it seems effective. |
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Check out my previous projects:
Ultralights & Amphibs |
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Back to Main/Index Page |
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Contact me |
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