I've been asked to look at a cruise control for a single-
engined light plane. I got the request via an intermediary,
who doesn't know a lot of details except that

(1) the micro should maintain the sensor input at 200Hz by

(2) sending a DC pulse to a pitch-control servo on the propellor

It seems "simple" enough, under ideal conditons anyway, but
if any of the licenced pilots on the list have any comments I'd
be glad to hear them. There will be real life factors to take
into consideration, eg buffeting, plane loading, time needed to
change pitch etc

Also, I have my hourly rate of course, and have a rough idea
what time is involved in the initial stages at least, but have
no idea what a commercially available unit costs. Possibly
the enquirer can't afford a unit off the shelf, I don't know. Any
ideas ? I'd just like to know whether I'm hundreds or thousands
of dollars off-beam. As there could be a small run follow up,
it would be nice to know I could actually get a reasonable return

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