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Forum: Tech Log

3rd Apr 2013, 06:40

Replies: 62

Fly a Boeing? Why is right rudder trim needed in cruise?

Views: 19,334

Posted By Straight & Level

So, this thread is taking an interesting 'turn'....

So, this thread is taking an interesting 'turn'. Pun intended ;)

I still maintain that the likely culprit is uneven cooling in the rudder actuator mechanism, as do Boeing it seems (thanks SMOC and...

Forum: Tech Log

2nd Apr 2013, 14:33

Replies: 62

Fly a Boeing? Why is right rudder trim needed in cruise?

Views: 19,334

Posted By Straight & Level

Ah! Most of my flying is East/West rather than...

Ah! Most of my flying is East/West rather than North/South so I haven't noticed anything significant. Interesting theory though!

Forum: Tech Log

2nd Apr 2013, 13:54

Replies: 62

Fly a Boeing? Why is right rudder trim needed in cruise?

Views: 19,334

Posted By Straight & Level

Good point Bearcat! Thanks for the excerpt...

Good point Bearcat! Thanks for the excerpt Main_dog, I think that explains it reasonably well :ok:

BOAC: Most of my flying is in the Northern Hemisphere. Care to expand on your question? I'm not...

Forum: Tech Log

2nd Apr 2013, 12:33

Replies: 62

Fly a Boeing? Why is right rudder trim needed in cruise?

Views: 19,334

Posted By Straight & Level

Bearcat, I've heard something similar myself, but...

Bearcat, I've heard something similar myself, but was wondering if there was anything definitive written by Boeing about this. So far I think SMOC and main_dog have the most plausible explanation:D...

Forum: Tech Log

2nd Apr 2013, 10:48

Replies: 62

Fly a Boeing? Why is right rudder trim needed in cruise?

Views: 19,334

Posted By Straight & Level

Good point Turin :D RB211/RR Trent engines...

Good point Turin :D

RB211/RR Trent engines turn clockwise as viewed from the front, whereas GE's turn anti-clockwise.

All the types I've flown generally need a squeeze of right trim, so you...

Forum: Tech Log

2nd Apr 2013, 09:50

Replies: 62

Fly a Boeing? Why is right rudder trim needed in cruise?

Views: 19,334

Posted By Straight & Level

I've not heard that one. What about a night...

I've not heard that one. What about a night flight ;)
Other theories are that the cargo doors on the 757 and 777 are on the right side, and in some way this affects the torsional stiffness of the...

Forum: Tech Log

2nd Apr 2013, 09:10

Replies: 62

Fly a Boeing? Why is right rudder trim needed in cruise?

Views: 19,334

Posted By Straight & Level

Fly a Boeing? Why is right rudder trim needed in cruise?

Something that I've wondered often but never received a definitive explanation to. Why in the cruise with balanced thrust and fuel do Boeings need a touch of right rudder trim? My experience is on...

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