----- Original Message -----

From: Jim Sower

To: Rotary motors in aircraft

Sent: Wednesday, March 02, 2005 8:46 PM

Subject: [FlyRotary] Re: EWP showdown

I was hoping to use them like fuel pumps - both for takeoff and landing, one or the other enroute ...

Russell Duffy wrote:

<... would give me 3 pumps in series ...>
Why do they have to be in series?  Don't ANY of these folks make a
viable check valve?

It's just the easiest way to do the test.  BTW, I was reviewing some old EWP posts today, and noticed that Bob tested his pumps in series, and parallel, and found that series had a higher flow rate.  That might be specific to his pumps, rather than a general rule, but the point was that parallel isn't necessarily better. 

 

Cheers,

Rusty (can't parallel park either)

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