Quote:
Originally Posted by cRiPpLe_rOoStEr
Messing up aero while braking could eventually improve braking, and decrease wear and tear of the brakes too. Not a bad idea at all, yet controlling the flaps may add a layer of complexity and weight...
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The brake light circuit could be the trigger. It's enabled at all times.
Since rotors and drums have the facility to store quite a bit of heat flux, actual flap opening could be delayed on a timer, as well as the closure.
An interrogating remote infrared sensor, calibrated for open circuit threshold would initiate the end of the cooling cycle once rotor or drum temp. parameter was satisfied.
Low power 12-VDC solenoids could actuate the flaps against a mechanical spring preload and viscous damper.
Or wire them 'fail-open'.