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Forum: Tech Log

14th Jun 2011, 11:37

Replies: 2,070

AF447 Thread No. 3

Views: 613,705

Posted By TyroPicard

Svarin That only applies in Normal Law - in ALT...

Svarin
That only applies in Normal Law - in ALT 2 the roll control is direct - so no positive spiral stability. That is why the a/c rolled on AP disconnect instead of maintaining zero roll-rate.

Forum: Tech Log

3rd Jun 2011, 20:23

Replies: 2,070

AF447 Thread No. 3

Views: 613,705

Posted By TyroPicard

Possible reasons for roll when AP disconnects in...

Possible reasons for roll when AP disconnects in ALT 2....

Fuel imbalance
Asymmetric thrust
Rudder position
Roll demand
Aileron or spoiler position
Icing

Any more, anyone?

Forum: Tech Log

27th May 2011, 22:11

Replies: 2,070

AF447 Thread No. 3

Views: 613,705

Posted By TyroPicard

Chris Scott Because without much airflow at...

Chris Scott

Because without much airflow at really low IAS gravity affects the position of the AoA vane just as it does on the ground? The designers had to choose a speed - they chose 60kts.

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