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Subject: RE: [FlyRotary] Re: Fwd: Fuel systems
Date: Thu, 16 Oct 2003 12:18:50 -0400
Message-ID: <0B27ED95697C4D4CBC82D79E790FE5678B0A0F@exchange.rfgonline.com>
Thread-Topic: [FlyRotary] Re: Fwd: Fuel systems
Thread-Index: AcOT/3Q1yUwEuMXzSiSDlRpGCEPMsQAAW9Eg
From: "Robinson, Chad" <crobinson@rfgonline.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>

Actually, you've raised two interesting concepts. First, sensing via a =
pressure sensor hadn't occurred to me, so I'm smacking myself for that. =
It's obviously a fairly simple solution, and easily added as extra =
inputs to most monitoring devices (and my glass cockpit).

But more importantly, fuel level itself is an instant indication of =
what's going on. If you're crossfeeding it without knowing it (because =
the solenoid failed, even though you didn't mean to crossfeed) your fuel =
level is going to rise in one tank, so anything that tracks such =
information can figure out what's going on and warn you.

Thanks,
Chad

> -----Original Message-----
> From: John Slade [mailto:sladerj@bellsouth.net]
> Sent: Thursday, October 16, 2003 12:06 PM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: Fwd: Fuel systems
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> Chad,
> Good questions, all.
> The solenoid is a pretty simple device. Give it a couple of=20
> amps and it
> clicks. Take em away and it clicks again. I've been thinking=20
> about a way to
> monitor the solenoid position but havent come up with one yet.  On
> epossibilit might be a pressure sensor in each return line.=20
> My initial plan
> is to keep a close eye on the fuel state of each tank=20
> (always) using my
> capacitance and sight guages. Hopefully I'd spot any transfer=20
> anomoly. Down
> the road I'll look into a detection system, but right now I need to
> concentrate on getting this plane in the air. Its amazing how much
> complexity you can add based on a "simple" idea.
> Regards,
> John
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