Author Topic: 2 little questions  (Read 8769 times)

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Offline dee

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2 little questions
« on: June 20, 2011, 01:57:37 PM »
Ian has just posted in the Media section about Kemble. A cracking pic of 558 and looking at it, i noticed the Silver Engine cover things are differant from one side to the other in shape i mean. Not the actual silver things but the bit in between?  Any reason or just we didnt have matching silver things? Also on the left hand side beyond the tail fin is what looks like a white disc? Is is just a Decal badge or something else? Just wondered, no sweat if its not answered  :)
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Offline Gully

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Re: 2 little questions
« Reply #1 on: June 20, 2011, 02:03:50 PM »
Can't see the picture here at work, but I'd guess the difference in the end caps is related to the ECM plate beneath one set of engines and the white dot is the foam lance point for the bomb bay. As I say though, just surmising in the absence of the picture!

Gully
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Offline dee

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Re: 2 little questions
« Reply #2 on: June 20, 2011, 02:05:56 PM »
http://www.bbc.co.uk/news/uk-england-gl ... e-13839934
The first pic is the one i was looking at Gully.
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Offline Mayfly

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Re: 2 little questions
« Reply #3 on: June 20, 2011, 02:14:55 PM »
Ians link works Dee but yours doesn't
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Offline Landyman

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Re: 2 little questions
« Reply #4 on: June 20, 2011, 02:15:51 PM »
I crawled over and around those exhausts at Lyneham while on polishing duty and have to admit I hadn't noticed the difference between them.  :oops:
I think that Gully has the answer with the ECM plate being on the starboard side. He is certainly correct with the white disc being a foam access in case of fire. I did get plenty of time to inspect that when I polished that area.

Landyman.
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Offline dee

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Re: 2 little questions
« Reply #5 on: June 20, 2011, 02:29:34 PM »
Quote from: "Mayfly"
Ians link works Dee but yours doesn't

http://www.bbc.co.uk/news/uk-england-gl ... e-13839934
Does this link work?
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Offline Mayfly

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Re: 2 little questions
« Reply #6 on: June 20, 2011, 02:37:42 PM »
Yes that one does.  :)
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Offline speedy

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Re: 2 little questions
« Reply #7 on: June 20, 2011, 02:38:39 PM »
Yup, it's the ECM plate.  Makes the rest of the arrangement look different from side to side but it isn't.  Some Vulcans had two, some had one.  Craig Bulman's book Vulcan from a different angle (or similar title) will list which ones had which number and when.
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Offline speedy

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Re: 2 little questions
« Reply #8 on: June 20, 2011, 02:39:31 PM »
Quote from: "Landyman"
I crawled over and around those exhausts at Lyneham while on polishing duty and have to admit I hadn't noticed the difference between them.  :oops:
I think that Gully has the answer with the ECM plate being on the starboard side. He is certainly correct with the white disc being a foam access in case of fire. I did get plenty of time to inspect that when I polished that area.

Landyman.

Hope I didn't leave any footprints.... lol
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“If anybody ever tells you anything about an aeroplane which is so bloody complicated you can't understand it, take it from me: it's all balls.” — R. J. Mitchell

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Offline dee

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Re: 2 little questions
« Reply #9 on: June 20, 2011, 03:26:41 PM »
I see, but why are they differant, why because of the ECM plate are they differant? Why cant they be the same both sides? :oops:
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Offline Zero One

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Re: 2 little questions
« Reply #10 on: June 20, 2011, 03:50:12 PM »
Quote from: "speedy"
Yup, it's the ECM plate.  Makes the rest of the arrangement look different from side to side but it isn't.  Some Vulcans had two, some had one.  Craig Bulman's book Vulcan from a different angle (or similar title) will list which ones had which number and when.

The port exhaust cones ARE different to the starboard ones...the port one have no webs... the reason as I understand it....  the airflow under the starboard wing is disturbed by the Red Shrimp plate and therefore the shape of the starboard efflux cones, or actually the larger webs between and outside the end caps counteracts and cancels this disturbance, in upper airflow..... ergo a stable wing

Am I right Sam?
« Last Edit: June 20, 2011, 03:53:28 PM by Zero One »
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Offline dee

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Re: 2 little questions
« Reply #11 on: June 20, 2011, 03:53:03 PM »
Now that i can sort of understand Denis.
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Offline Zero One

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Re: 2 little questions
« Reply #12 on: June 20, 2011, 03:54:44 PM »
Quote from: "dee"
Now that i can sort of understand Denis.

An "Anoraks" viewpoint :lol:  :lol:
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Offline dee

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Re: 2 little questions
« Reply #13 on: June 20, 2011, 05:05:07 PM »
So something as simple as a little change in shape like that can affect the stability so much!?
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Offline deeleyt

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Re: 2 little questions
« Reply #14 on: June 20, 2011, 09:09:57 PM »
The addition of somthing as simple as a sharks fin antenna is enough the cause a disturbed air flow, as a simple example, on some JP's a thin coating of concrete was added to the leading edge to cause disturbance to the airflow to upset the natural good tendencies of the aircraft. Another example are vortex generators some only as high as 5 mm (sorry about the non-imperial ref).
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