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Forum: Tech Log

1st Jul 2011, 05:08

Replies: 1,069

AF 447 Thread no. 4

Views: 281,606

Posted By PickyPerkins

Failsafe

"AIRPLANE UPSET RECOVERY (http://www.skybrary.aero/bookshelf/books/435.pdf), A test pilots point of view"
by Captain William Wainwright, Chief Test Pilot, Airbus Industrie,
... There is no need...

Forum: Tech Log

29th Jun 2011, 14:32

Replies: 1,069

AF 447 Thread no. 4

Views: 281,606

Posted By PickyPerkins

Not seeing the wood for the trees

No objection. I agree with you. Human factors and the "startle effect (http://www.faa.gov/other_visit/aviation_industry/airline_operators/training/media/Appendix%203-E_HighAltOperations.ppt)" is...

Forum: Tech Log

29th Jun 2011, 13:39

Replies: 1,069

AF 447 Thread no. 4

Views: 281,606

Posted By PickyPerkins

Elevator deflection conventions

I don't know what the standard convention is, but in Fig. 6 of this NASA report a + elevator movement results in an increased pitch down moment, i.e. the opposite of your assumption.

The negative...

Forum: Tech Log

29th Jun 2011, 04:55

Replies: 1,069

AF 447 Thread no. 4

Views: 281,606

Posted By PickyPerkins

Not seeing the wood for the trees.

Yes, probably an outlier because AF447 came down in a deep stall, with a slower descent than for a spin , spiral dive, or the like.

It might be interesting, and possibly useful, to examine these...

Forum: Tech Log

25th Jun 2011, 04:28

Replies: 1,069

AF 447 Thread no. 4

Views: 281,606

Posted By PickyPerkins

Not seeing the wood for the trees.

A major part of this thread has been and still is (very appropriately and usefully) along the lines of looking at the bark of one tree using a variety of microscopes. I would like to step back for a...

Forum: Tech Log

24th Jun 2011, 17:54

Replies: 1,069

AF 447 Thread no. 4

Views: 281,606

Posted By PickyPerkins

Absence of elevator control reversal

Thanks for your comment.

Looking at Fig. 6 (see below) of the NASA report "Dynamic Modelling and Simulation of Large Transport Aeroplanes in Upset Conditions", I see that for the generic twin jet...

Forum: Tech Log

22nd Jun 2011, 05:18

Replies: 1,069

AF 447 Thread no. 4

Views: 281,606

Posted By PickyPerkins

Those who cannot remember the past ........

http://pp.home.infionline.net/s&r.jpg

Forum: Tech Log

17th Jun 2011, 05:07

Replies: 1,069

AF 447 Thread no. 4

Views: 281,606

Posted By PickyPerkins

RetiredF4 and HeavyMetallist

Not disagreeing at all with RetiredF4's detailed post, and in fact building on it, I would like to ask a question concerning the situation once the a/c had established an AoA of about 61°.
...

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