Warbird Information Exchange

A) Don't know and B) Not for me they won't

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Don't make me go get my flying monkeys-

I looked at the pics at 300% size & can't see any dimples.... but they *could* be filled with paint....

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Those who possess real knowledge are rare.

Those who can set that knowledge into motion in the physical world are rarer still.

The few who possess real knowledge and can set it into motion of their own hands are the rarest of all.

to what end?

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"I knew the jig was up when I saw the P-51D-20-NA Mustang blue-nosed bastards from Bodney, and by the way the blue was more of a royal blue than an indigo and the inner landing gear interiors were NOT green, over Berlin."

Someone trying to cover his butt....?

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Those who possess real knowledge are rare.

Those who can set that knowledge into motion in the physical world are rarer still.

The few who possess real knowledge and can set it into motion of their own hands are the rarest of all.

On WIX. That'll help.

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"I knew the jig was up when I saw the P-51D-20-NA Mustang blue-nosed bastards from Bodney, and by the way the blue was more of a royal blue than an indigo and the inner landing gear interiors were NOT green, over Berlin."

@Rob.Brindley: Yes, it is, it was at MeierMotors, delivered to customer late last year.
@ZRX61: All I do know is, it belongs to a German customer (AFAIK), identity unknown so far (at least not common knowledge). You will not get any info who it is, if he doesn´t want to say so. Who worked on it? I´d like to know myself.
@all: Does it look like it was done like this during original production, or might it be some repair, or simply impossible to say by the pics alone? Just curious....

Michael

I'm guessing that this was done during assembly, since most of the damaged rivet buck tails are covered with grey paint that matches the rest of the structure, but I could be wrong.

-Pat

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Trust me, I know what I'm doing.

Does anybody know what kind of rivets they use on the German aircraft? Did they use AN/MS or some equivalent? They being Flug werk or who ever might do repair work on those aircraft.
Just curious as to the old and or current standard?
Thx

The .pdf hyperlink in the first post includes "After a few flights being flown within prescribed limits (max. 450km/h, 3g)".

Are these Speed/G limits the maximum for these aircraft or just the limits for a particular flight testing phase?

Don't know about the Germans but in the UK for Warbirds you have some paperwork that gets approved and it states limits for speed and Gs. They are called Airworthiness Approval Notes.
Sample here for a Spitfire-
http://www.caa.co.uk/aandocs/20279/20279000000.pdf
I suspect under the EASA rules which has become the standard for the European countries it is the same for German registered aircraft which lack a standard airworthiness certificate such as homebuilts and warbirds.

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Rich Palmer

Remember an Injured Youth
benstear.org
#64- Stay Strong and Keep the Faith

BOOM BOOM, ROUND ROUND, PROPELLER GO

Don't Be A Dilbert!

Thanks for the info..

450kmh/280mph & 3G just seem to be on the low end for this type of aircraft. 450km/280mph VNE???
Then again, if only 3G's has caused the wing spar damage.....???

Interesting document about the Spitfire. The Spit TR9 I flew in had a placard in the rear cockpit. "Maximum diving speed 370Kts IAS".
The document mentioned they had to add weight to the tail to get the correct CG, I think if they had put a book shelf in the unused radio rack and put in all the documents generated in this rebuild, they wouldn't have needed any lead at all.

It all depends on where it is registered and what the bureaucrats deem is required. Each country and even different aircraft of the same species may end up different.
A while back new spar booms were extruded using an Alum Alloy that ended up testing less than the original. Those ended up with more restrictive speed and G loads IIRC.
I would guess every Spitfire has weight in the back since they all differ from the early models. Each improvement in power brought a larger, heavier engine and prop. The nose extended forward but the tail stayed pretty much in the same spot. To balance the titter-totter you add weight to the aft end.
The Bald Eagle thread has some pics of the Mk XVIII weight installation some where back a few pages.

_________________
Rich Palmer

Remember an Injured Youth
benstear.org
#64- Stay Strong and Keep the Faith

BOOM BOOM, ROUND ROUND, PROPELLER GO

Don't Be A Dilbert!