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The Vulcan howl - again

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Simon Chaddock14/12/2010 19:32:23
5672 forum posts
3011 photos
I make no apologies for raising this again. It is a noise that's quite unique.

Once XH558 reaches the end of its flying life recordings like this will be all that  is left.

Edited By Simon Chaddock on 14/12/2010 19:33:56

Garry Pollard14/12/2010 20:12:25
1091 forum posts
Lets hope that is many years in the future Simom
Stephen Grigg15/12/2010 00:10:01
8691 forum posts
1128 photos
Excellant,what engines are fitted into the Vulcan and why does it have such a distinctive howl?
ken anderson.15/12/2010 14:16:20
8623 forum posts
779 photos
yes-i take my hat off to the lads at AVRO......proud to be british........
  ken anderson    ne...1.
Turbycat15/12/2010 14:24:23
594 forum posts
55 photos
An early Bristol Siddelety olympus I think.
Spent a week at Waddington in the 80's on an ATC cadet camp. Best one for noise was when I was on a camp at Binbrook and we stood at the end of the runway next to a lightning taking off on full reheat!

Edited By Turbycat on 15/12/2010 14:28:11

Supersooty15/12/2010 15:02:34
22 forum posts
3 photos
IAn early Bristol Siddelety olympus I think.
558 is fitted with the Olympus 201engines each giving 18,000 lbs of thrust.  Later aircraftv were fitted with Olympus 300 series giving close to 20,000 lbs of thrust.  Small beer in comparison to the modern Trent engines fitted to the A380!
Kozmyk15/12/2010 15:15:37
151 forum posts
4 photos
If you want to help keep XH558 flying take a look here:

Edited By Kozmyk on 15/12/2010 15:16:11

Supersooty15/12/2010 15:16:41
22 forum posts
3 photos
why does it have such a distinctive howl?
The howl comes from the intake skins flexing and airflow through the compressor it comes in at 97% RPM.
As an ex-Vulcan Propulsion fitter, it was always a joy to take the engines up to 'Max' and wake Scampton up at night!
andy watson15/12/2010 15:37:22
1942 forum posts
20 photos
I wonder if the 4 70mm EDF fans I have asked Santa for will manage the same.........
Simon Chaddock15/12/2010 17:24:44
5672 forum posts
3011 photos
Yes even 20.000lb thrust is small compared to a modern turbo fan but the Olympus is a pure jet.
At the time it had one of the largest "cores" of any jet engine and thus it ended up in reheat form in both TSR2 and Concorde.
There is a nice story in Sir Stanley Hooker's book when he personally took charge of the throttle when demonstrating an early prototype Olympus to an American delegation. Despite objection from the test engineer he slammed the throttle to full power from idle without hesitation. Few early axial turbojets took kindly to such treatment but nevertheless it ran smoothly up to show 5000lbs thrust on the dial.
Although impressed with this the Americans indicated they already had engines of this power under test.
Sir Stanley gently pointed out that the dial was only showing half scale. Brilliant! 

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