Blackbird
Topic Author
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VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 8:47 am

The VC-10 had a rather interesting hydraulic layout if I recall... anyone know more?
 
N231YE
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RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 8:53 am

This may be of interest to you:

http://www.vc10.net/Technical/hydraulics.html
 
Blackbird
Topic Author
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RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 9:08 am

Thank you. Was the electrically-driven hydraulic pack system successful?

Andrea
 
N231YE
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RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 9:50 am

Quoting Blackbird (Reply 2):
Was the electrically-driven hydraulic pack system successful?

I am not sure. I will try to find out though.
 
saintsman
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RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 4:43 pm

Actually they worked quite well.They weren't something that was changed that often.

If I remember correctly, the main issues we had was with the autopilot servo motors that were connected to the PFCUs.
 
Tristarsteve
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RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 6:41 pm

I do remember pushing the steps around the aircraft to check the hyd quantitys on a weekly check.
There was no EICAS to look at!, you had to go and look at every little tank and check the level.
 
vc10
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RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 7:53 pm

The PFCU system was a very reliable system, after a few initial problems, and in the 10 years I was with the VC-10 I do not recall them being a problem. The biggest problem was if something went wrong with the elevator PFCU as they were so high from the ground, and I always remember the feeling of relief after working on one, using a cherry picker, on the ramp at LHR . It was good to get down in one piece, Prior to the introduction of the VC-10 BOAC had to build a special overhaul workshop for them where the air was finely filtered as the limits on the PFCU components was very tight.

littlevc10
 
VC-10
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RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 7:55 pm

Quoting Blackbird (Reply 2):
Was the electrically-driven hydraulic pack system successful?

Well, they are using it on the 380!
 
DH106
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Joined: Wed Jun 15, 2005 5:32 pm

RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 8:03 pm

Slightly off topic, for those with an eye for detail - the the VC10 has always struck me as unique in that it doesn't seem to have any secondary nose gear doors - meaning the small ones that remain open when gear is down and covers the area where the leg itself extends through. Take a look at any VC10 piccie with the gear down and you'll see what I mean.

Is there a small 'hatch' that closes from the inside when the gear is raised to streamline the hole in the fuz through which the nose gear passes when down?
...I watched c-beams glitter in the dark by the Tanhauser Gate....
 
VC-10
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RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 8:52 pm

Quoting DH106 (Reply 8):
Is there a small 'hatch' that closes from the inside when the gear is raised to streamline the hole in the fuz through which the nose gear passes when down?

Yes, the strut door folds in two & goes up into the bay aft of the strut
 
DH106
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RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 10:33 pm

Quoting VC-10 (Reply 9):
Yes, the strut door folds in two & goes up into the bay aft of the strut

Ahhhh - thanks. Neat arrangement.
Love the VC-10 - a very asthetic aircraft. Excellent safety record as well.
...I watched c-beams glitter in the dark by the Tanhauser Gate....
 
baroque
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Joined: Thu Apr 27, 2006 2:15 pm

RE: VC-10 Hydraulic's And Control-Surfaces

Fri Dec 08, 2006 10:54 pm

Quoting VC-10 (Reply 7):
Quoting Blackbird (Reply 2):
Was the electrically-driven hydraulic pack system successful?

Well, they are using it on the 380!

Ok, but is that a yes or a no?  angel 
 
VC-10
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RE: VC-10 Hydraulic's And Control-Surfaces

Sat Dec 09, 2006 3:39 am

Quoting Blackbird (Reply 2):
Was the electrically-driven hydraulic pack system successful?

I've just remembered that it was used on the Vickers Valiant before the VC-10

And the Nose Gear Door

http://homepage.ntlworld.com/paul.robinson16/Door.jpg

http://homepage.ntlworld.com/paul.robinson16/Door2.jpg

Taken from 1962 vintage course notes
 
DH106
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Joined: Wed Jun 15, 2005 5:32 pm

RE: VC-10 Hydraulic's And Control-Surfaces

Sat Dec 09, 2006 4:14 am

Quoting VC-10 (Reply 12):
And the Nose Gear Door

Makes perfect sense now VC10 - thanks  Smile
I did manage a quick look at G-ARVM's nose gear before she was unfortunately cut up and did see a bit of the blue painted door face behind the leg!
Seems fairly simple and doesn't need a lot of space - wonder why no other airliners used a system like that.
...I watched c-beams glitter in the dark by the Tanhauser Gate....
 
Blackbird
Topic Author
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Joined: Wed Oct 06, 1999 10:48 am

RE: VC-10 Hydraulic's And Control-Surfaces

Sat Dec 09, 2006 6:31 am

I think that hydraulic pack system sounds a hell of a lot better than the systems we used on our jets.
 
Blackbird
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RE: VC-10 Hydraulic's And Control-Surfaces

Sun Dec 24, 2006 9:46 am

I don't know why this didn't occur to me back then: I thought electrical systems have a higher incidence of failure than hydraulic systems?

Andrea K
 
Blackbird
Topic Author
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RE: VC-10 Hydraulic's And Control-Surfaces

Fri Jan 19, 2007 2:57 pm

Did those electrical hydraulic packs have mechanical linkages like an ordinary hydraulic powered plane, or was it fly-by-wire?

Andrea K
 
saintsman
Posts: 2037
Joined: Fri Mar 15, 2002 12:34 am

RE: VC-10 Hydraulic's And Control-Surfaces

Fri Jan 19, 2007 4:48 pm

Quoting Blackbird (Reply 16):
Did those electrical hydraulic packs have mechanical linkages like an ordinary hydraulic powered plane, or was it fly-by-wire?

They are both. Mechanical for normal use and electrical for autopilot.
 
Blackbird
Topic Author
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RE: VC-10 Hydraulic's And Control-Surfaces

Sun Jan 21, 2007 4:45 pm

How did it achieve such reliability using an electrically powered hydraulic system. From what I remember, electrical systems have a far higher incidence of failures. What made it reliable enough if applicable, even if it was just dumb luck. :p

Thank you for your reply, Saintsman

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