<Snip - List of sensors in previous note - additions follow>

Del if you have the capacity water & oil temps into and out of the

rads

would be
handy. Also air temps in and out of the rads.

This would give us a handle on how well the cooling system
is working. Also a few pressure measurements around the radiators
would indicate how well the scoops and ducts are working.

I would also like to see cylinder head temperature down next to
the combustion chamber adjacent to the lower spark plugs.

Paul Lamar

How about enough channels for each rotor (3 for the 20B) + 1 tit
(turbine inlet temp) for the turbocharged crowd, mounted to read the
temp just before the turbo? Might be useful! Also Oxygen sensor (for EC
tuning).
 [Marc Wiese]

Del Wrote:

Paul, would a differential pressure sensor work or the duct system (cuts the
cost in half and probably would provide better sensitivity) or were you
thinking of absolute pressure sensors?  Would the duct system temperature
and air pressure sensors be something that would only be needed during the
test flight period and then not be used after the duct system has been
worked out?

Yes on the differential if you used static pressure as the reference.
Yes. Once the duct system is working the pressure should not change
over time.

Ideally you would want a number of pressure sensors to get a good indication
on how the air is moving through the system.  All of those sensor wouldn't
be monitored after the duct system has been optimized.  It might be better
to develop a box (painted black?) with a set of sensors and a data capturing
unit that could be loaned or rented, for a modest fee, to those that want to
monitor their duct system during first flight and subsequent flights, if the
duct system is modified.  To minimize temperature induced errors it would be
best to keep all of the pressure sensors inside of the 'black box' and run
tubing to it.

Marc, can you be more specific about 'enough channels for each rotor'.
Where you thinking of EGT for each exhaust port?

We are working on that. I am collecting Mazda solenoid valves so we
can use one pressure sensor and select a bunch of pressure taps.
Don't throw those old Mazda smog air solenoid valves away.
Please send them to me.

Paul Lamar
 
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