In Case You Missed It
Two-axis Electric Trim Controller for Under $50
This homebuilt two-axis electric trim controller has all the functions of the fanciest commercial units, yet it costs less than $50 for the parts.
Wind Tunnel
Stall flutter is the result of the elastic axis of a wings surface being aft of the aerodynamic center, resulting in instability. A vicious cycle of lift, twist, stall and lift may ensue.
