Mailing List flyrotary@lancaironline.net Message #58898
From: Ernest Christley <echristley@att.net>
Subject: Re: [flyRotary] Spreadsheet Fuel Section
Date: Sun, 26 Aug 2012 23:12:44 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Ed, I've been trying to calculate my fuel flow and compare that to what the spreadsheet gives.

I'm running four 460cc/min injectors in two banks.  For this paricular log sample, bank1 has pulsewidth of 5.251ms and the second bank is firing for 4.001ms.  With a MAP at 28.5" (96.4kPa) and an intake temp of 91, the engine is spinning 5550RPM with an AFR of 13.1.

Using the fuel flow numbers I have, I should be burning 12.48gph.  The spreadsheet says the number would be 12.8gph.  Given that these data logs have a bit of noise, I call that good nuff' for gubment work.

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