Posts about: "F-WTSA" [Posts: 5 Pages: 1]

ChristiaanJ
18th Aug 2010, 21:24
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Post: 20
M2dude,

Re the MEPU at the Le Bourget museum...
The story I just got was that it was taken off F-WTSA or F-WTSB at Roissy for a fault and replaced (both 'SA and 'SB operated out of Roissy around '74 / '75 for things like route proving, etc.).
It got left on a shelf in a store, and was only discovered again in 2003 during the "big clean-out" and was saved 'in extremis' by somebody who recognised it for what it was, stopped it from being 'binned' and took it over to the museum.

Quote:
Originally Posted by Biggles78
10,000kg in a trim tank? No, I am really not that stupid to think it was all used for trim
Initially of couse it was. It was not until the return to subsonic, towards the end of the flight, that the contents of the n\xb0 11 trim tank were moved forward again to the other tanks.
So yes, you're right, essentially all of it was "useable" fuel, it did not serve only for the trim.

Quote:
Also wish someone had recorded her being rolled (like the B707 when being displayed).
Don't we all....
Jock Lowe seems to have stated there is a photo.... and we all still wonder if there is some footage taken from the Lear Jet during the filming of "Airport 79". But none is publicly known to exist ... we just know it's been done!
M2dude
15th Sep 2010, 16:04
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Post: 365
bio161
Quote:
- In June 1974 Air France pitted Concorde against the B747 in a direct race. The
Hi, I think that they are refereing to the French development aircraft 102 F-WTSA, I remember the event really well, the aircraft was even delayed on the ground in Paris while one of the 'passengers' (An American press reporter) went shopping in the terminal building. In spite of the delay Concorde still won the 'race' with ease.

Dude
ChristiaanJ
16th Oct 2010, 22:27
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Post: 580
OK, I see others have already posted answers.
I've carefully avoided looking at them, but I'll might as well plug in mine now.

Quote:
Originally Posted by M2dude
If you were never personally involved withe the aircraft you can leave out the really stinky questions if you want.
My personal problem is that I was involved in the very earliest days, before the aircraft went into service, and then in the last days and afterwards...
So the questions dealing with the in-service period are totally outside my field of experience... all I can do is guess, in case I saw the answers somewhere.

1) How many Concorde airframes were built?
Twenty-two.
Two static-test airframes.
- One at Toulouse, for purely static tests, and tests such as vibration and flutter.
- One at Farnborough, for the long-duration thermal fatigue tests.
(A few bits and pieces of the Farnborough test specimen have survived, and can still be seen at the Brooklands museum).
Two prototypes (001 and 002)
Two pre-production aircraft (01 and 02)
Two production aircraft used for certification, that never entered service (201 - F-WTSB and 202 - G-BBDG)
Fourteen production aircraft, seven that served with British Airways, seven that served with Air France.

2) As far as the British constructed aircraft went, name the destinations that were served?. Regular flight numbers only, excludes charters etc.
Not a clue as to the full list.
- Bahrain, obviously.
- JFK.
- IAD (not sure if that's rated as regular, or only incidental)
- Dallas (with Braniff)
- Barbados (of course, right until the end)
- Sngapore (with Singapore Airlines, and G-BOAD in Singapore Airlines colours on one side)
- Sydney (again no idea if that rated as a regular flight or only a few tries)

3) What was the departure time for the ORIGINAL morning LHR-JFK Concorde services? (Not called the BA001 then either).
Not a clue either. Vague memory of about 10:00 am which gave you a full working day in New York.

4) Further to question 3 above, what WERE the original flight numbers for the BA001 and BA003? (The morning and evening LHR-JFK services?)..
Never flew on them, never had to deal with them.
BA174 comes to mind from the depths of my memory, in that case BA003 would have been BA176?

5) There were no less than FORTY SIX fuel pumps on Concorde. What was the breakdown for these? (Clue; don't forget the scavenge pump )
M2dude, I did AFCS, not the fuel system. I believe you, but without pulling out some diagrams I honestly have NO idea.
I expect each tank had at least two pumps, which gets me up to 26.
Then there were a few emergency pumps for the trim tanks, and I suppose each engine had additional pumps associated with it.
Still nowhere near the 46 I need to find.....

6) What airframe had the only TOTALLY unique shape?
That would have been my old friend, 01 (G-AXDN), first pre-production aircraft, now at Duxford.
It was the first Concorde with the new transparent visor, but it still had the short tail that characterised the prototypes.
It was 02 (F-WTSA), the first French pre-production aircraft, that was close to the final shape of the production aircraft.

7) This one is particularly aimed at ChristiaanJ. What was the total number of gyros on the aircraft?
Good question.... never counted them all. But I'll try a guess.
First a nice one, the SFENA Emergency Standby Artificial Horizon (made by the firm I worked for).
Ran off the Emergency Battery Bus via a small independent inverter.
And if that failed too, it would still run reliably for several minutes on its own inertia.
Next, the rate gyros used by the autostabilisation system ; these measured the angular rate of the aircraft along the three main axes, pitch, roll and yaw.
There were six, three each for the two autostab systems.
Now the rest....
Each IMU (inertial measurement unit, part of the inertial naviagation system) had three gyros.
With three INS on board, that would make nine.
Much as I try, I can't remember other ones, so I'll look forward to the final answer.
I can imagine the weather radar using an additional gyro for stabilisation, but I never went there.

8) How many wheel brakes?
Unless this is a trick question, I would say eight, for each of the main gear wheels.
The nose gear did not have any brakes - unless there were some small ones to stop the wheels rotating after retraction of the gear, but not used during landing.

9) What Mach number was automatic engine variable intake control enabled?
No idea.
Mach 1.0 or thereabouts is my personal guess only.

10) Above each bank of engine instruments were three lights, a blue, a green and an amber. What did they each signify?
I know that they each monitored the status of one of the engines, because it was too complex for the pilots to fully monitor all the parameters of all four engines in the short time between start-of-roll and V1... they had too many other things to do.
But I don't remember what each light meant, would have to look it up in the manual.

11) At what airfied were the first BA crew base training details held?
No idea.
Was it Brize Norton, or Casablanca?

12) What LHR runways did Concorde use for landing and take-off? (Trick question, not as obvious as it might seem).
No idea.
Vague memory of it being systematically the North runway for noise issues.

13) What operator had serious plans to operate Concorde from SNN to JFK in the early 1980's?
No idea.

14) What development aircraft did not exceed Mach 2 until fifteen months after her maiden flight?
I would expect the obvious answer to be 002.
Working up from first flight to Mach 2 was a slow and laborious process, and in the end it was 001 that both flew first, and also went to Mach 2 first.
I don't think any of the other aircraft took that long.

A I said, I tried to answer all questions "off the top of my head", without looking at any other sources.

CJ
ChristiaanJ
12th Dec 2011, 17:31
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Post: 1523
Quote:
Originally Posted by db737 View Post
Hi, Christaan. Thank You for the info. No, we don't have to go to that extreme.
LOL.... OK.
Anyway, for modelers (not your case, I take it) a Munsell chip ref wouldn't be much use..... they'd need a Humbrol paint number !

"Matching colors" is a Concorde problem to this day....
A small group of enthusiasts is trying to re-paint F-WTSA (the French preprod Concorde, now at a small museum south of the Paris Orly airport) in the same paint scheme as in the olden days... ancient BA livery on one side, ancient AF livery on the other side.
Getting hold of all the paint color references is not obvious!

CJ
NHerby
10th Jul 2012, 09:10
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Post: 1655
@CliveL

Quote:
Partly out of equal shares, but there was also more flight test development work than could be handled by just one aircraft in a reasonable timescale, and each partner had their own sphere of responsibility to cover so if you have to have two airframes it made some sense to have one each.
Thanks again CliveL

A few pages earlier on this thread some of you have posted some of their favourite photos of Concorde. Here are very sad, chocking and rare photos:

This is 211 (F-BVFD) after "Air France's special treatment" (shame on them). The photos were taken in 1994. More photos of this can be seen here: Maripa : Documentation photographique.

To compensate, here's one of my favourite:


Most of those photos were taken at Toulouse (we saw a lot from Filton in this thread but very few from France). The caption of the top left picture says it is 102 (F-WTSA) and 201 (F-WTSB) in the background. The image comes from a french website ( Concorde dans la presse de 1965 \xe0 2003 ) gathering hundreds of articles about Concorde. Very interesting but in French only.
I particulary like this last serie of photos because it shows the process of a dream turning into reality, the beginning of such a beautiful adventure and the symbol of a time where national pride and technical achievment had more importance and value than the basic investment/profitability ratio that rules the world today! And now, more than 40 years later, not only we are not able to build a SST but we are also not able to make a SST flying again.
And this leads to a new question (maybe another 64000$ one):
As we can see in those photos and as I have seen in photos from Filton, several pre-production and production airframes were built at the same time. Did the fabrication of pre-production or production a/c had to be stopped at some point to wait for in flight test results? Similar question: did the early flights revealed unforseen problems that needed to be sorted out before the program can move on?