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SWZL-1 Stick Shaker

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0.21 KGS
$9.99 (Fixed shipping cost)

Product Description

Currently out of stock.


The SWZL-1 is a simple to install stick shaker that uses EFIS AoA information from Dynon, Garmin and Grand Rapids Technology to provide tactile feedback of impending stall.

See the project page in The Hangar Workshop for the open source documentation for the hardware design.  (Note that the code embedded on the chip is not provided as open source, however the hardware is an open development platform for this and other motor driving applications.)  

The SWZL-1A is an aircraft “stick shaker” controller system that provides a haptic pre-stall warning based on a stall vane switch or the Angle of Attack (AoA) information received from an electronic flight information system (EFIS) serial data stream. The SWZL-1A controller directly drives a small vibration motor that is clamped to the control stick or control yoke of the aircraft.  The device is compatible with EFIS devices from Dynon, Garmin and Grand Rapids Technology (GRT).

In normal operation the stick shaker does not interfere with the aircraft controls.  As a stall is approached, the aircraft angle of attack increases to the point where the stick begins vibrating and pulsing.  As the angle of attack increases, the amplitude of the vibration and the frequency of the pulsing increase, providing a progressive indication of an impending stall.  For aircraft without an angle of attack sensor, a simple stall vane switch may be connected to the SWZL-1A controller to provide a single-level, non-progressive pre-stall indication.





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