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Forum: Tech Log

11th Mar 2023, 14:52

Replies: 29

Random 777 questions, part 1

Views: 6,671

Posted By tdracer

All FADEC engines (in "Normal" mode) adjust the...

All FADEC engines (in "Normal" mode) adjust the fuel flow to keep the target N1 or EPR - Rolls is no way unique in the that regard. The EAI debit is to protect EGT margins.
However, since anti-ice...

Forum: Tech Log

9th Mar 2023, 15:33

Replies: 29

Random 777 questions, part 1

Views: 6,671

Posted By tdracer

No, it won't. The FADEC receives the bleed...

No, it won't. The FADEC receives the bleed status from the aircraft, and will automatically derate the max TO thrust to account for the bleed debits (in some cases it will also debit max climb, but...

Forum: Tech Log

8th Mar 2023, 19:40

Replies: 29

Random 777 questions, part 1

Views: 6,671

Posted By tdracer

Memory also says it applies to the 737, but I...

Memory also says it applies to the 737, but I wouldn't swear to that (WAI wasn't exactly my area of expertise).

Forum: Tech Log

8th Mar 2023, 17:00

Replies: 29

Random 777 questions, part 1

Views: 6,671

Posted By tdracer

The answers above are pretty good, I'll add a few...

The answers above are pretty good, I'll add a few things:
WAI draws a lot of bleed air from the engine - far more than ECS or Engine AI, so the potential impact to EGT margin is large. Further, on...

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