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XyZspineZyX
07-07-2003, 10:20 PM
From a post over at Aces High by funkedup.

"Regarding Spitfire wing failures, it was not a structural problem. Spits had no problem staying together in high speed dives - they dove to some of the highest recorded Mach numbers for a prop fighter.

The problem with Spitfire Mk. V wing failures is detailed in Chapter 21 of Jeffrey Quill's book "Spitfire: A Test Pilot's Story". The explanation in the book is a bit technical but the short story is that some airplanes were being loaded improperly in the field, causing an aft CG shift and longitudinal instability. The instability manifested itself by stick force reversal in hard maneuvers. Stick force reversal meant that as the pilot pulled harder and harder, suddenly the thing would go all the way back in his lap and stay there unless he pushed forward with all his might. When this happened in a high speed dive recovery, the airframe was subjected to loads way beyond design limits, sometimes resulting in wing spar failure and disintegration. The problem was resolved by modifications to the elevator and its control circuit."


edit: added quotation marks
http://www.stenbergaa.com/stenberg/crandall-stormclouds2.jpg


Message Edited on 07/07/0305:39PM by MiloMorai

XyZspineZyX
07-07-2003, 10:20 PM
From a post over at Aces High by funkedup.

"Regarding Spitfire wing failures, it was not a structural problem. Spits had no problem staying together in high speed dives - they dove to some of the highest recorded Mach numbers for a prop fighter.

The problem with Spitfire Mk. V wing failures is detailed in Chapter 21 of Jeffrey Quill's book "Spitfire: A Test Pilot's Story". The explanation in the book is a bit technical but the short story is that some airplanes were being loaded improperly in the field, causing an aft CG shift and longitudinal instability. The instability manifested itself by stick force reversal in hard maneuvers. Stick force reversal meant that as the pilot pulled harder and harder, suddenly the thing would go all the way back in his lap and stay there unless he pushed forward with all his might. When this happened in a high speed dive recovery, the airframe was subjected to loads way beyond design limits, sometimes resulting in wing spar failure and disintegration. The problem was resolved by modifications to the elevator and its control circuit."


edit: added quotation marks
http://www.stenbergaa.com/stenberg/crandall-stormclouds2.jpg


Message Edited on 07/07/0305:39PM by MiloMorai

XyZspineZyX
07-07-2003, 10:28 PM
Do you always answer a question from one forum, on another forum?

Da Buzz
---------------------------------------------------------------------------------------
<center> Butcher Bird
<center>
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<center.
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XyZspineZyX
07-07-2003, 10:36 PM
the spit is not in FB so, this thread is off-topic. http://ubbxforums.ubi.com/infopop/emoticons/icon_razz.gif

No sorry but, I don't see quite the point here in posting this.

1 Judge not, that ye be not judged.
2 For with what judgment ye judge, ye
shall be judged: and with what
measure ye mete, it shall be
measured to you again.

http://members.chello.se/ven/ham-pin.gif

XyZspineZyX
07-07-2003, 10:38 PM
Did you just get up or maybe it is oxygen starvation Buzz?/i/smilies/16x16_smiley-wink.gif


BuzzU wrote:
- Do you always answer a question from one forum, on
- another forum?
-
-

I don't see me answering any question. Just posting some info that might be of interest to some here.

@ Platypus. It is coming and there have been posts claiming the Spit was weak structurally.

http://www.stenbergaa.com/stenberg/crandall-stormclouds2.jpg


Message Edited on 07/07/0305:40PM by MiloMorai

XyZspineZyX
07-07-2003, 10:42 PM
I live at 7500 ft. I always need more oxygen.


btw.. It did seem like a response to a debate on another forum./i/smilies/16x16_smiley-wink.gif

Da Buzz
---------------------------------------------------------------------------------------
<center> Butcher Bird
<center>
http://www.histoiredumonde.net/images/20_eme_siecle/avions/fw190/intro.jpg

<center.
http://perso.wanadoo.es/francesclleonsi/corsair2SKY.gif

XyZspineZyX
07-08-2003, 02:11 AM
Bah, sometimes I post stuff from other forums. Some persons/personettes just get jealous about it.

This came from the LEXX forum.

Brian Downey's new website is up. --> http://www.briandowney.biz/

XyZspineZyX
07-08-2003, 02:13 AM
forgot.

Thanks for the Spit post. /i/smilies/16x16_smiley-happy.gif

XyZspineZyX
07-08-2003, 02:39 AM
BuzzU wrote:
- I live at 7500 ft. I always need more oxygen.
-
-
- btw.. It did seem like a response to a debate on
- another forum


You actually need oxygen in 7500 feet, you must really smoke a hell of alot....... /i/smilies/16x16_smiley-wink.gif