invernyx / md11-bugs

The official bug tracker for the TFDi Design MD-11
https://tfdidesign.com/md11.php
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[BUG] - PW High Idle #1281

Open AllNaturalBlue opened 1 month ago

AllNaturalBlue commented 1 month ago

Describe the bug

The idle power on the PW engines are too high.

Steps to reproduce

Start the engines and keep the throttle in the idle position.

Expected behaviour

The PW4462 engines usually idle at around 65% N2, however in the TFDi they idle at around 75% N2 on the ground. This can cause descents where the speed doesn't bleed off properly as it should and can result in faster rolls on the ground with the parking brake off.

Evidence

TFDIMD11 image

The first image is the TFDi, second image is from a YouTube video of a Martinair MD-11.

Simulator

Microsoft Flight Simulator 2020 (MSFS)

Crash

No

Phase of flight

Pre-flight

Altitude

This issue happens both on the ground and in the air.

Agreement

Leonsgame commented 3 weeks ago

Something I noticed is that with the current build (v. 0.66.0.2), if you put the FADEC's into Alternate mode, the N2 goes down to 65%, like it should according to this issue.

FADEC normal Microsoft Flight Simulator - 1 37 19 0 23 06 2024 22_17_05

FADEC alternate

Microsoft Flight Simulator - 1 37 19 0 23 06 2024 22_17_19