Yes, it does... Thanks!
I hope I never will experience this situation, but a pilot has of
course to know what to do “if”. ;-)
Best,
Stefan
----- Mensagem de Rudy Chalupa <rudo...@aol.com> ---------
Data: Wed, 22 Feb 2023 13:27:51 +0000 (UTC)
De: Rudy Chalupa <rudo...@aol.com>
Assunto: Re: [Sursound] Death Spiral
Para: sursound@music.vt.edu
Hi Stefan,
The layperson's explanation: If you are flying by visual flight
rules (typically a small plane with no instruments)(or you ignore
your instruments) and you cannot see the horizon (clouds, night),
you can get into a situation where the plane begins to bank (turn)
but you don't know it (due to gravity plus centrifugal force still
pulling you toward the floor). In this case the plane will spiral
ever tighter and lower until it reaches the ground while you are all
the while convinced you are flying straight and level.
Hope this helps!
Rudy ChalupaPleiades Audio + Electronics
-----Original Message-----
From: Stefan Schreiber <st...@mail.telepac.pt>
To: Surround Sound discussion group <sursound@music.vt.edu>
Sent: Tue, Feb 21, 2023 7:50 pm
Subject: Re: [Sursound] So long CIPIC HRTF?
Maybe it is me who now really would need some crash course in aviation, but:
Is flying in a spiral not something you would do in some intentional way?
(Opposite to the spin situation, because this is kind of uncontrolled.
Or you "have to do something".)
So in which sense would you have to "recover" from the spiral?
I read this before, btw:
"But whoever cares, really? We all know what we're talking about.
Especially when you have to use the instrument in order to deliver
yourself and your passengers from a death spiral."
So what is this spiral? A situation when the plane is spinning, even a
stall (interruption of air flow), or what else?
(Please enlighten me, and then I will ask Anders H. "what to do". ;-)
Best,
Stefan
----- Mensagem de Fons Adriaensen <f...@linuxaudio.org> ---------
Data: Tue, 21 Feb 2023 21:45:38 +0100
De: Fons Adriaensen <f...@linuxaudio.org>
Assunto: Re: [Sursound] So long CIPIC HRTF?
Para: sursound@music.vt.edu
On Tue, Feb 21, 2023 at 07:08:51PM +0000, Stefan Schreiber wrote:
I am just “sharing” what a Swedish pilot and aviation engineer wrote to me,
discussing and clarifying your problem(s)... ;-)
We were not discussing spins, either upright or inverted.
A 'spiral', very different from any spin, was mentioned,
and Sampo seemed to think that recovery from that would
require regaining speed. The opposite is true, as in a
spiral your airspeed will increase [1]. Unless you recover,
there are two ways in which it can end: by smashing into
the ground, by or structural breakdown as the result of
excessive speed.
So as part of spiral recovery, you need to reduce speed.
[1] As it will during any turn, unless you compensate
by pulling the stick to maintain altitude.
Ciao,
--
FA
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