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Forum: Tech Log

11th Jun 2011, 12:24

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

No it doesn't take 10 degrees nose up to initiate...

No it doesn't take 10 degrees nose up to initiate a climb but if you applied a large aggressive input with less aerodynamic damping (at high alt) then you would reach 10 degrees very quickly. ...

Forum: Tech Log

10th Jun 2011, 15:49

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

Sorry for the long quote, but it will explain...

Sorry for the long quote, but it will explain things better than I can. Its from Boeing's take on upsets and may help us understand why the climb happened. (Yes I know Airbus FBW is different from...

Forum: Tech Log

9th Jun 2011, 10:09

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

JD-EE Read the safety first article, it will...

JD-EE

Read the safety first article, it will explain, as I have tried to do, why the stall warning may have gone off.

Forum: Tech Log

9th Jun 2011, 09:44

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

CONFiture Fair enough, my last sentence...

CONFiture

Fair enough, my last sentence should have said that Vsw in Alt Law occurs at a lower AoA than Alpha Prot in Normal Law. I say that clearly enough elsewhere but it was late and as I...

Forum: Tech Log

8th Jun 2011, 22:51

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

A/P drops out at 1 degree above Alpha Prot in...

A/P drops out at 1 degree above Alpha Prot in normal law, you can still get back to Alpha Max with full back stick and the A/T out (Alpha Floor) which is still short of Alpha Stall albeit not by...

Forum: Tech Log

8th Jun 2011, 21:51

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

Bearfoil remember that in Alt Law Vsw is based on...

Bearfoil remember that in Alt Law Vsw is based on an AoA value which is lower than V Aprot in Norm Law and if you drop into Alt Law at Hi LvL the warning can be triggered by turbulence or heavy...

Forum: Tech Log

4th Jun 2011, 07:43

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

Hi speed protection (Normal Law) cannot be...

Hi speed protection (Normal Law) cannot be overridden. The pitch up can be reduced, possably delaying recovery, but not overridden even with full forward stick. If you leave it alone to do its...

Forum: Tech Log

28th May 2011, 15:07

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

RBF Surely in a spiral dive you would have...

RBF

Surely in a spiral dive you would have increasing G if you pulled backstick which you could sense. Can't see the confusion myself, certainly not for 4 min's.

It may well be when all is...

Forum: Tech Log

27th May 2011, 21:48

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

Murphy, No I wasn't, maybe vaguely somewhere...

Murphy,

No I wasn't, maybe vaguely somewhere in the grey matter, and even if I was could I recall that info under pressure?

I make the same point that you are re the confusion that might have...

Forum: Tech Log

27th May 2011, 19:48

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

Our training is always to honour the stall...

Our training is always to honour the stall warning with unreliable airspeed indications as it is based on AoA.

Forum: Tech Log

27th May 2011, 19:32

Replies: 2,070

AF447 Thread No. 3

Views: 613,703

Posted By Ashling

PEI 3721 There is no requirement to check...

PEI 3721

There is no requirement to check the THS.

Airbus have changed their stall recovery procedures to seperate the nose down input from the power up. You now only smoothly increase power...

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