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Tracy Crook wrote:
>
> >
> The FBW RX-8 throttle body controller design is done and the
> inevitable 'feature creep' has begun. > > It occurred to me that since the throttle controller has access to
> all the EC2 data that it could do a number of things. The two I
> have adopted so far are manifold pressure hold and RPM hold. > They hold the respective parameter constant at the value it was at
> when the function was engaged. Obviously the MP hold can only
> work up to the ambient or turbo boost pressure available. They
> are disengaged by either hitting the cancel button or sensing that
> the pilot is frantically trying to regain control by moving the
> power lever.
> > Any other ideas for this widget before I freeze the design?
> > Tracy Crook
> > How about Prop sync ;-)
> > Monty
> > > My prop is always in sync!
> > But seriously, build a plane that needs it and you'll get it! : )
> > Tracy
>
What is prop sync? Having two props with crossing arcs, turning in opposite directions and timed so they don't collide?
Ernest, its used mainly in multi-engine a/c. I have one in the 414 I fly and its supposed to simplify the sync of the RPM's of the two motors.. it don't work worth a darn but.. then I've never seen one that does... I don't know if anyone is building a twin on here, but as Tracy says.. you'd have to build a plane that needs it first.. all the singles in the world don't.. Now he doesn't know that I've actually design'd a twin I'd like to build w/ rotaries.. but thats a discussion for another day :-).
Jarrett Johnson
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