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Old 10th Apr 2014, 01:24
  #185 (permalink)  
Agrajag
 
Join Date: Jan 2008
Location: Oz
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it doesn't matter if it cont or bendix both do the same job. fuel px is measured post pump and pre fcu. wf is measured post fcu. it can be measure as px and conveverted as I've said to read wf or you can have a vane or spool type that measures flow pre spider and post fcu and it must have a in and a out, if it doesn't have that its measuring px.
Yes Conti and Bendix do the same job of supplying fuel to the injectors, though in very differing ways. That understanding means that we as pilots operate them in a different manner, from starting technique down to usage of the boost pump. And I'll say it again: our fuel flow sender is pre-FCU; in fact it's pre-fuel pump.

Perhaps you wont explain because you don't know ? but do enlighten me how then it measures its fuel air ratio to provide the correct settings.
I could indeed, and I could probably also do so for a RR Dart, but both would be equally irrelevant to this discussion. I don't believe I need to prove my credentials in order to demonstrate that you have no idea of what is in our particular aircraft, and therefore how it's best utilised. You're lecturing me, and others here, on the basis of some broad assumptions that were never true.

Now yesterday I worked on 3 different engines including turbine types and one airframe and gave advise on one other airframe. Now its impossible for me to know each individual aeroplane that you all have but the principles are the same when setting up your system and how and what px are there. so if its read directly via px line or electrical via a transducer it still reads wf as a measurement of px unless you are using a spool/vane inline unit.
I hope you didn't offer strident, condescending advice on these varied aircraft without even setting eyes on them, or knowing what engines and equipment were installed. Because that's what you've been doing here!

Sorry yr right, but all the way along you've been pushing the hard line that there's only one way to operate all piston aero engines, and that's simply not true. I was taught the same stuff when I started, but I've since become aware that it was an over-simplification. We now know more about what's going on inside the engine, and we can use that information to optimise its operation in every phase of flight, instead of a one-size-fits-all rule. And since we didn't just buy our licences, as you sneeringly inferred a while back, we have the capacity to do so.
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