Canadian_JOY
Well Known Member
I've plumbed the wing of our aircraft with an extra 1/4" plastic tube to accommodate a future AoA installation. I recently upgraded our GRT AHARS to the new Adaptive AHARS and included the AOA option.
I'm not in the mood to spend the big bucks for the Dynon heated AOA probe, nor to mount its electronics out in a finished wing. That leaves me with the task of devising a homebrew AOA probe. I've looked at the ingenious method employed by the RV12 gang (love that drilled rivet near the leading edge!) but our finished wing won't allow this option.
I've been giving consideration to installing something very simple immediately adjacent to the existing heated pitot - perhaps offset an inch or so outboard of the pitot so the AOA would receive some "bump protection" from the adjacent pitot. I've been thinking of using a piece of 1/4" 5052 aluminum tubing welded into a doubler plate. Drill a 1/4" hole through the wing, install the doubler from the inside, then bend the pipe to the appropriate downward angle. On the inside I'd likely go with just a Nylo-Seal 262-N union to adapt from the aluminum to plastic line. This could even be scaled down to use 1/8" tubing if one wanted.
What have others done to fabricate an AOA probe?
I'm not in the mood to spend the big bucks for the Dynon heated AOA probe, nor to mount its electronics out in a finished wing. That leaves me with the task of devising a homebrew AOA probe. I've looked at the ingenious method employed by the RV12 gang (love that drilled rivet near the leading edge!) but our finished wing won't allow this option.
I've been giving consideration to installing something very simple immediately adjacent to the existing heated pitot - perhaps offset an inch or so outboard of the pitot so the AOA would receive some "bump protection" from the adjacent pitot. I've been thinking of using a piece of 1/4" 5052 aluminum tubing welded into a doubler plate. Drill a 1/4" hole through the wing, install the doubler from the inside, then bend the pipe to the appropriate downward angle. On the inside I'd likely go with just a Nylo-Seal 262-N union to adapt from the aluminum to plastic line. This could even be scaled down to use 1/8" tubing if one wanted.
What have others done to fabricate an AOA probe?