Turbo - No Fuel Flow
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In SPAD.Next data inspection, BKSQ_FuelFlow_1 is not updated at all (value is always 0 and never changes), while priming or when engine is started and pushed up to 20mp.
GALLONS PER HOUR, I don't find this variable at all.
Also I noted that once engine is running, the FF needle only start to move around 18mp, not below.
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I did another test and found something interesting.
This time, the fuel flow indication didn't increase again, even after tapping the gauge. The EDM showed that fuel flow was increasing normally, so the engine itself was receiving fuel correctly.
Since I had previously completed a flight where the gauge worked as expected, I tried to figure out what was causing the needle to stick. It seems to start sticking at around 16°C. By 20°C, the needle no longer moves upward at all, even if I tap on the gauge. -
Hi, everyone. I looked into this more today, and found the obvious: The fuel flow gauge is highly non-linear at the very bottom of its scale. Since these real instruments are full of real mechanical eccentricities, I've just added a little piece of "cheater" code to help boost the fuel flow indication just enough to read on the scale. Hopefully that should help eliminate any confusion.
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@Woolies Deploying the flight simulation software emergency response team now
@Black-Square said in Turbo - No Fuel Flow:
@Woolies Deploying the flight simulation software emergency response team now
Oh one one eight nine nine nine, eight eight one nine nine, nine one one nine, seven two five . . . . . . three.
I love the IT Crowd!
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@Black-Square said in Turbo - No Fuel Flow:
@Woolies Deploying the flight simulation software emergency response team now
Oh one one eight nine nine nine, eight eight one nine nine, nine one one nine, seven two five . . . . . . three.
I love the IT Crowd!
@rightseat Remember: They're not just the emergency services, they're your emergency services
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I just noticed something today. First I started flying the turbo version of the commander and got that fuel flow needle not moving when priming (always). Then I switched to the normal version for a few flights, and there the needle is moving as expected. And today I have done another flight with the TC version and guess what: the needle was moving!
I can't find the logic there, but that is maybe something useful for you. -
I thought I remembered the TC needle moving during the prime sequence right after the patch, but now it never moves at all anymore.
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Ratman nailed it regarding temperature sensitivity on the TC version. Well, it might be a couple things that need adjusting to be ideal. Procedure is to crack the throttle 1/4 in. and increase mixture to full rich to achieve > 5 GPH. Two things look to be working against trying to achieve that.
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Fuel flow does not increase based on throttle setting until the throttle is up to around 80% and higher, thus cracking it 1/4 in., or even 50% open, is no different than keeping it fully shut off in terms of fuel flow and starting the plane. You just need some fuel flow during prime to start.
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On the TC version fuel flow is dependent on outside temperature. The TC version looks to behave like the normally aspirated version at ~54F, where fuel flow peaks, and at temps below. As temp increases from 54F, fuel flow starts to drop when priming. Since its pretty damn hot all over the northern hemisphere right now, if you fly real world conditions, you're probably at > 75F on the ground. If temp gets high enough, fuel flow drops to zero until the conditions in #1 are met with the throttle up > 80%. These temp effects are not seen on the normally aspirated version as far as I could tell.
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