Fuel flow incorrect? |
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keithb77
Check-In Staff Joined: 24 Apr 2017 Points: 15 |
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Posted: 24 Apr 2017 at 12:10pm |
Hi, very nice looking plane
But as an FSEconomy user I have a concern with the fuel flow, it seems to be pretty much locked at around 370 GPH, I can make large power changes without change to the fuel flow. In real life it should be around 210-220 GPH (US) I think. 370 GPH and 1440 gallons = less than 4 hours aloft and a significant reduction range and increase in fuel costs I could play with the fuel flow scalar but maybe I'm doing something wrong? Fuel trimmers would be a possibility but I don't think they are modelled. Nothing about this mentioned that I can see in the upcoming patch notes, except maybe FDE improvements. Cheers Keith
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Martyn
Just Flight Staff Development Manager Joined: 31 Mar 2008 Location: Huntingdon, UK Points: 7615 |
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Hi Keith,
What altitude/power settings are you using? I've just checked using the latest build (currently in late testing) and at FL150 with 14000 RPM (190 KIAS) I am seeing approx. 1560lbs per hour, or 230 GPH. Thanks Martyn
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Martyn
Just Flight Ltd |
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keithb77
Check-In Staff Joined: 24 Apr 2017 Points: 15 |
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It was over a range of settings...but I've just been notified of the SP2 update so I will download and retest that one :)
Cheers Keith
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keithb77
Check-In Staff Joined: 24 Apr 2017 Points: 15 |
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Martyn,
Using SP2 now - but I can't even get to 14,000 RPM at 15,000 ft, the best I can get is 13,840 RPM at max throttle which gives 280 KTAS (from the Z display) and 370 GPH.
Throttling back to 9,480 RPM gives 230 GPH at 250 KTAS, a bit further to 9,000 RPM gives 200 GPH and 198 KTAS. I'm happy with the speed/GPH at cruise...but the displayed RPM may be too low? At higher throttle settings the GPH stays at 370 whilst the RPM varies with throttle... Cheers Keith |
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keithb77
Check-In Staff Joined: 24 Apr 2017 Points: 15 |
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Also I note the .air file hasn't changed, despite there being 'FDE improvements' ... is that correct?
I uninstalled again and checked the folder was empty before rereinstalling.
And I find it very difficult to get her on to the ground, really doesn't want to slow down in the air... Checked RPMs and handling against the old Rick Piper freeware - which seems to be correct... Cheers Keith |
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