Ok... I must be missing something here, but I have seen a torque/rpm
curve from a static prop on a stand where both were measured and
plotted, and it matched known flight profiles very closely... i.e.
the "projected" flight time with a given prop/rubber combination and
actual times were not "useless" as stated...
From my experience, torque curves of rubber are very important to
know... and knowing what the rpm of a VP prop during unwind is, and
when it changes as the pitch changes, I would think would be nice to
be able to test and plot...
I dunno... everyone can correct me if I'm wrong, but if you had the
ability to save and plot torque and rpm (even just those...) during
unwind, as well as torque during winding, it would be pretty
valuable... especially with VP, or flaring props...
JH
--- In Indoor_Construction_at_yahoogroups.com, dgbj@... wrote:
> Measuring a propeller without measuring airspeed and RPM is like
measuring the
> forces on a wing without measuring attack angle. The information
is useless.
>
> "(What I NEED, more than anything else, is the time to work on the
concept!)"
>
> Yes!
>
> Gary Hinze
Received on Mon Apr 30 2007 - 14:01:54 CEST
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