You can whistle...
You can whistle...
Joined: May 2001
Posts: 1,424
Likes: 34
From: London,England
I wish someone could answer this one, I've been on the 'bus for about 3 years now and it does whistle when in cloud. Is it the ice probe on the front of the windscreen I wonder. There must be an Airbus expert out there somewhere who could sort this out, no one at work seems to know.
PPRuNe Engineering Dept Apprentice
Joined: Mar 2001
Posts: 295
Likes: 1
From: Deep in the boglands of Western Ireland
Hmmm, this sounds like some kind of a vortice or something that only happens when hit by water vapour. Can ye tell where the sound comes from? Or it it al around? oh, and how loud is it?
Thread Starter
Joined: Oct 2001
Posts: 56
Likes: 0
From: uk
The sound is not very loud: you barely notice it if you are chit-chatting or concentrating REALLY hard on the crossword.
It's kind of an ethereal whistle, not locatable particularly, but very definite when entering and leaving a cloud layer, i.e. it doesn't gradually gain volume, it is there (in cloud) or not (back into the blue). C'mon guys, someone must know!
It's kind of an ethereal whistle, not locatable particularly, but very definite when entering and leaving a cloud layer, i.e. it doesn't gradually gain volume, it is there (in cloud) or not (back into the blue). C'mon guys, someone must know!
Joined: Aug 1998
Aviation Qualifications: ATPL
Posts: 6,623
Likes: 847
From: Ex-pat Aussie in the UK
At a guess, I would say that, as fair proportion of cloud at altitude is made up from ice crystals, the sound is from the ice crystals rushing past the cockpit.
Like sands through the hourglass....
Like sands through the hourglass....
None but a blockhead
Joined: Nov 1999
Posts: 534
Likes: 0
From: London, UK
It's probably just a little nervous at not being able to see the sky, especially if it's just been bullied by a Boeing, so it's whistling to keep its spirits up, People don't worry nearly enough about the feelings of their a/c...
R
R
Joined: Jun 2001
Posts: 78
Likes: 0
From: Bahrain
When the French developed the bus, they immediately realized they need plenty of computers and even more software development for those computers. So they went to who else but good old Bill Gates. Well you know Bill when he develops an operating system he always puts in a back door and some form of gimmick. So he figured that he will program the computer to whistle "Yanky doodle comes to town" whenever the thing goes through a cloud.. .In fact if you press simultaneously PROG, OVERFLY and 6 on the MCDU you get the lyricks of "Yanky doodle" on the MCDU so you can sing along to the music.
Joined: Feb 1998
Aviation Qualifications: ATPL
Posts: 1,595
Likes: 0
From: Formerly of Nam
Dont know if its any help but the old DC-9 blokes used to tell me they could hear a whistle in the 9s cockpit when ice was forming on some particular antenna. Served as a good reminder to bung on the anti-ice.
[ 31 January 2002: Message edited by: Slasher ]</p>
[ 31 January 2002: Message edited by: Slasher ]</p>
