fw 190a5 flight model

[badatflyski]

Originally Posted by FC99

Please, post this on Aces High board, I'd like to read Dale's comment when he realize that his FM is "Gaston approved"

Structural limit for deformation is the one listed in manual, for fighter planes, safety factor was typically about 1.5 so plane with 8G limit will be expected to survive 12G. Between 8 and 12G plane will suffer permanent damage and in case of repeated over-stressing it will break even at values under 12G.
You can see in attachment where is the expected wing failure for one WWII fighter.


There is no aviation board where Gaston didn't post his alternative aerodynamics theories, if he was capable of learning anything he would learn it long ago. He is not even funny anymore, it's just sad.

Hi FatCat! long time heuh?!

Wurger's wings broke at 14g continous and fuselage at 20g continous.
the full "monocoque" design was one of the strongest or even maybe the strongest of all planes of WW2.

About the low speed turn from Gaston theory : wtf

yes, the 190could turn faster than other planes in certain conditions, but we can't actually talk about a turn in the sense most think of (180° or higher), the 190 was able to START the turn much faster than most planes due to it's aileron effectiveness (roll rate acceleration) and as Gaston should know, a turn bleeds aircraft energy very bad, and semi laminar wing profile is not so good for low speeds, that's why you do not turn make direction changes of more than 90° in combat with a 190 and you keep scissoring and rolling keeping the speed high, if your fysical condition allows it...

A (real veteran)russion pilot said some years ago after seeing IL2: you make continuesly turns of more than 3G, in real life after a few of those turns, your muscles burns, your vision is troubled and you can't handle the stick correctly,what means you're a sitting duck in a combat area.


PS: an A8 at 6000m is faster in a 90° turn than a P51D, not because of the speed, but because the plane has a higher angle and the pilot, due to his seat pisition, is allowed to endure +1G than any other plane

PS2: how are you FC?

[Gaston]

Originally Posted by FC99

Structural limit for deformation is the one listed in manual, for fighter planes, safety factor was typically about 1.5 so plane with 8G limit will be expected to survive 12G. Between 8 and 12G plane will suffer permanent damage and in case of repeated over-stressing it will break even at values under 12G.
You can see in attachment where is the expected wing failure for one WWII fighter.

"Between 8 and 12G plane will suffer permanent damage"

Well, I figure in typical WWII aircraft the upper limit is 6 G (typical pilot limit) plus 2 Gs of engine-caused wing bending... So that is still 8 Gs total, and still within what you say is the start of permanent deformation...

An exceptional case is the P-51, which with G-suit could make the pilot tolerate 7 Gs, and probably added 2 "Gs" or more with the engine leverage...

So that makes for 9-10Gs... Hey, isn't the P-51 well-known for unexpected -and never explained- wing and tail failures? Hmmm... What a coincidence...

Also the P-51's wing obviously bent more than expected given its gun reliability record under turning Gs: Now isn't that another interesting coincidence?

Another interesting case is the Spitfire, which in my view must have added an exceptional amount of wing bending to its 6 G pilot limit: I figure up to 3 Gs, or over 22 000 lbs worth of extra wing bending over the "base" 44 000 lbs at 6 Gs...

This also makes for a total of 9 Gs, but the mutliple spar-inside-the spar wing construction was well-designed to bend, and could probably take that without huge risks... Unlike the P-51, the Spitfire is not known for wing failures, but IS known for wing deformation at high Gs with careless pilots... What a coincidence...

Since the pilot could not take much more than 6 Gs without at least losing his situational awareness in close combat, it does seem a bit strange these things were often damaged...

Gaston