The thing that causes a wing to stall (and subsequently perhaps to
spin) is that it meets the air at greater than the stalling angle.
All subsonic thin wings, flown at speeds where compressibility is not
an issue(below about 200 knots) stall at around 15 degrees angle of
attack (the angle at
At 01:01 PM 3/06/2011, you wrote:
Hi;
Another article which expands upon the subject:
http://www.flightglobal.com/articles/2011/02/06/352727/industry-sounds-warnings-on-airline-pilot-skills.html
Interesting that a meeting was held and nobody could remember where
the new stall recovery
Hi;
Another article which expands upon the subject:
http://www.flightglobal.com/articles/2011/02/06/352727/industry-sounds-warnings-on-airline-pilot-skills.html
On Mon, 30 May 2011, Mike Borgelt wrote:
WTF
.
Tom
- Original Message -
From: Mike Borgelt mborg...@borgeltinstruments.com
To: Discussion of issues relating to Soaring in Australia.
aus-soaring@lists.internode.on.net
Cc:
Sent: Monday, 30 May 2011 7:43 PM
Subject: Re: [Aus-soaring] Stalls
At 07:37 PM 30/05/2011, you wrote:
Airbus
The artificial horizon (AH) will only tell you if you are climbing or
descending. It works on the direction you are travelling in.
Most larger aircraft will have an angle of attack device, either a
vane or probe, mounted on either side of the nose. This can be used in
a
On 30/05/2011, at 12:26 PM, DMcD wrote:
I was attempting to explain a stall like this to #2 wife and had
difficulty understanding why they did not put the nose down or look at
an instrument to tell them their AOA since they would have had some
minutes to think about this during what appears
On 30/05/2011, at 5:07 PM, anthony.sm...@adelaide.on.net wrote:
Stall angle gets really complicated and modern airliners will have a computer
to work it all out and provide warning to the crew. Most of the time this
takes the form of a 'stick shaker' - a system which mechanically shakes
Of Mark Newton
Sent: Monday, 30 May 2011 6:32 PM
To: anthony.sm...@adelaide.on.net; Discussion of issues relating to Soaring
in Australia.
Cc: DMcD
Subject: Re: [Aus-soaring] Stalls
On 30/05/2011, at 5:07 PM, anthony.sm...@adelaide.on.net wrote:
Stall angle gets really complicated
At 12:56 PM 30/05/2011, you wrote:
I know nothing about nothing which is probably apparent from my
postings, but can someone tell me, do instruments like an artificial
horizon give these pilots any indication of nose angle or angle of
incidence?
I was attempting to explain a stall like this to
On 30/05/2011, at 6:51 PM, David Conway wrote:
As Mark says stall angle is complicated but they manage to present a lot of
it on the primary flight display alongside the airspeed strip:
Yep, although on AF-744 the PFD would have been inoperative.
(one of the alerts very early in the piece
At 07:37 PM 30/05/2011, you wrote:
Airbus PFDs are driven by the air data computers. The flight data
recorder indicates that all three air data computers tripped offline --
which would have removed the PFD's data feed, which would have
rendered the entirety of both pilots' PFDs inoperative.
May 2011 7:13 PM
To: Discussion of issues relating to Soaring in Australia.
Subject: Re: [Aus-soaring] Stalls
At 07:37 PM 30/05/2011, you wrote:
Airbus PFDs are driven by the air data computers. The flight data
recorder indicates that all three air data computers tripped
So when they are talking about recovering from stalls, they dont mean the
cheap seats, its something those big things with the whatcha callits out the
sides do.
JR
___
Aus-soaring mailing list
Aus-soaring@lists.internode.on.net
To check or change
Hi;
Here is the release from BEA which may answer some questions (and raise
others):
http://www.bea.aero/fr/enquetes/vol.af.447/point.enquete.af447.27mai2011.en.pdf
On Mon, 30 May 2011, Mike Borgelt wrote:
At 12:56 PM 30/05/2011, you wrote:
I know nothing about nothing which is probably
Hi;
On Mon, 30 May 2011, Mark Newton wrote:
On 30/05/2011, at 12:26 PM, DMcD wrote:
I was attempting to explain a stall like this to #2 wife and had
difficulty understanding why they did not put the nose down or look at
an instrument to tell them their AOA since they would have had some
Quite a lot of further information (mixed in with varying amounts of
falsehood) on this specific accident can be found here:
http://www.pprune.org/tech-log/452836-af447-thread-no-3-a.html
Filter as required - after a while you will work out which contributors
know what they are talking about.
At 07:55 PM 30/05/2011, you wrote:
Content-Type: multipart/related;
boundary==_NextPart_000_0096_01CC1EFF.5B554370
Content-Language: en-au
There is a backup system and separate display to the PFD's (ISIS)
So hopefully when the computers went off line the back up display
worked
On 30/05/2011, at 8:18 PM, Mike Borgelt wrote:
So hopefully when the computers went off line the back up display worked from
the gyros and accelerometers? With the quality of the gyros and
accelerometers they would be using the attitude display at least ought to
work usefully for some
At 08:58 PM 30/05/2011, you wrote:
On 30/05/2011, at 8:18 PM, Mike Borgelt wrote:
So hopefully when the computers went off line the back up display
worked from the gyros and accelerometers? With the quality of the
gyros and accelerometers they would be using the attitude display
at least
WTF
http://www.flightglobal.com/articles/2011/05/28/357321/revised-stall-procedures-centre-on-angle-of-attack-not.html
Mike
Borgelt Instruments - manufacturers of quality soaring instruments since 1978
phone Int'l + 61 746 355784
fax Int'l + 61 746 358796
cellphone Int'l + 61 428 355784
Scary, isn't it?
-Original Message-
From: aus-soaring-boun...@lists.internode.on.net
[mailto:aus-soaring-boun...@lists.internode.on.net] On Behalf Of Mike
Borgelt
Sent: Monday, 30 May 2011 11:27 AM
To: Discussion of issues relating to Soaring in Australia.
Subject: Re: [Aus-soaring
On 30/05/2011 10:57 AM, Mike Borgelt wrote:
WTF
http://www.flightglobal.com/articles/2011/05/28/357321/revised-stall-procedures-centre-on-angle-of-attack-not.html
Exactly. I've been reading the PPRuNe threads on this sad business
since day one. (OK I know some people will claim
I know nothing about nothing which is probably apparent from my
postings, but can someone tell me, do instruments like an artificial
horizon give these pilots any indication of nose angle or angle of
incidence?
I was attempting to explain a stall like this to #2 wife and had
difficulty
, 2011 1:54:59 PM GMT +10:00 Canberra / Melbourne / Sydney
Subject: Re: [Aus-soaring] Stalls
I was attempting to explain ... this to #2 wife.
No! no! D bin D. You get the senior #1 wife to explain things to the junior
wives. :-)
C bin D
- Original Message -
From: DMcD slutsw
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