Hi,

As you know by now,my question will always be twofold. One for the
Vision and one for the Triumph Spitfire. Rotarys will be used in
both. Has anybody used an electric cooling fan on an aircraft(for
extended taxi operations) and how does an electric fan compare to the
viscous fan on my 13B Turbo engine?

Regards,

Pierre

The large diameter high HP version certainly work at low taxi speeds.
The current drain should be at least 30 amps or about 360 watts which is
about 1/2 HP.

The big advantage is you can switch it off when you don't need it. The
downside is it blocks some of the air flow through the core.

The engine driven mechanical viscous fan on the other hand can be as much as
3 or 4 HP or more at  high engine RPM. Not practical for an aircraft due to ducting
limitations.

Paul Lamar ...No rotor no motor.



Peirre,
I keep a 500 hp V8 cool with 2 each of their 16" fans [Spal]. Best electric fans on
the market.
Larry




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