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TAS and fuel flow values do not seem to match POH tables #155

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adauming123 opened this issue May 25, 2022 · 1 comment
Open

TAS and fuel flow values do not seem to match POH tables #155

adauming123 opened this issue May 25, 2022 · 1 comment
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@adauming123
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Describe the bug
When setting the prop RPM and Torque to various values at cruise stated by the POH, they don't seem to match very well.

Example:
Figure 1
image

Figure 2
image

As seen in figure 1, I am cruising at 8000 feet with RPM set to 1750 and torque set to 1843. According to the POH (figure 2) I should achieve 171 KTAS at 396 PPH, but instead, I observe 166 KATS at 440. While they are not THAT far off, I have observed fairly large deviations of more than 10 kts and more than 50 ppm from POH, especially when cruising at 1900 RPM.

Wonderful mod you have here, just wanted to point out something i noticed :)

@adauming123 adauming123 added the bug Something isn't working label May 25, 2022
@fabio-alss-freitas
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fabio-alss-freitas commented Jun 30, 2023

Hello, @adauming123 , how are you?

It seems that you are looking at the table for the 208B non-EX, with a lower engine configuration (675 shp / 3 blade), while the aircraft in question is the 208B EX (867 shp / 4 blade). Could you please confirm by testing the table below?

Screenshot_20230630_081015_Adobe Acrobat

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