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FM/DM threads Everything about FM/DM in CoD

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  #71  
Old 10-11-2011, 10:54 PM
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VO101_Tom VO101_Tom is offline
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Originally Posted by Ataros View Post
109s must be banned on all the servers as they outturn even Hurri. Proved now.
(the gunsight is a track recording bug and I am not the driver)
What is the historical 109 turnrate?
/trolling mode off
Yes, track recording works online now.
Hi. Who was the pilot of a Hurricane? He said what? Which systems is damaged, when he got the first hit? After that the speed at which he could turn to? He was able to keep the corner speed? Does it make sense to compare after that?

When we practicing on own server, the Hurricane does not seem a bad aircraft. It would be nice, if these "proofs" repeated under controlled conditions, for example on a 1v1 map...? It is possible...?
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  #72  
Old 10-11-2011, 11:07 PM
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That is an interesting chart, IvanK, but a bit difficult to read as the time scale is logarithmic.

The tendency is that in terms of turn rates full circle both planes were quite close with perhaps a very small advantage for the spit (perhaps 2s as absolut max generously estimated optically. Would have to print it out and measure it to be more precise) at medium velocities. The spit will rule at slow speeds. For high velocities theres a minor advantage for the 109 in terms of turn rate.
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  #73  
Old 10-12-2011, 12:40 AM
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CWMV CWMV is offline
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Originally Posted by Al Schlageter View Post
Auszüge aus Flugzeugdatenblatt Bf 109 E-1, E-3 nach L.Dv.556/3
http://www.rolfwolf.de/daten/E4/Emil.html

Official documentation for production 109Es is trash. Right, got you.

1.) V0 = 467 km/h
2.) V0 = 467 km/h Werte graphisch
3.) V0 = 467 km/h auf 0 m bezogen!
4.) V0 = 466 km/h

http://www.kurfurst.org/Performance_...MP16feb39.html

Strange that you would ignore other data on Barbi's site.
Far from ignored, just not relevant. That info does nothing more than prove that the difference between cannon and mg wing guns is negligible, and that the max speed at 1.3 ata is around 470kph.
So what is it at 1.35, or even better the MAX speed using the 1.42 emergency setting...Ill bet its closer to 490, unless you believe that the max speed wouldn't change with more power.
We are talking about MAX speed, right?

But I find your attitude even stranger.
See, this is the part of this site that I thought we were going to avoid in this thread. You act like you've got a dog in this fight, when were doing nothing more than comparing notes.
IvanK got on here and posted the same info, and more of it, but wasn't a snide little troll when he did it. In that way he came off as a professional and someone worth listening to.
You, not so much. I'm sorry to see that civil discussion is something you have not mastered.

And hypocritical to boot, you would chide me for ignoring information that you (erroneously) believe supports your point, while dismissing what I bring to the fore.

Now, perhaps we can continue this discussion in less derisive manner?

Id also like to add that I am amazed that with this exception the discussion here has been as informative and civil as it has been, lets hope it catches on around here!
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Just fix the friggin thing you boof heads. It's getting boring now. Only 11 people on the whole thing. Yawn.
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  #74  
Old 10-12-2011, 12:45 AM
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Originally Posted by fruitbat View Post
i wasn't talking about you mate.

Don't know if its the same as in il2, cause i've never flown with cockpit off in Clod, but in the old il2 flying wonderwomen use to give you a TAS readout.

for the record i fly both sides evenly, cause i don't see the point in depriving myself half the game. never understood that mentality, but thats me.
Truely Id like to see them all modeled correctly. No point in a sim if they aren't!

Have you got a good IAS to TAS converter link? On the phone now, cant search...

Kudos to you on flying both sides, I'm simply not interested in any British aircraft prior to the tempest.
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Just fix the friggin thing you boof heads. It's getting boring now. Only 11 people on the whole thing. Yawn.
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  #75  
Old 10-12-2011, 07:28 AM
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Originally Posted by VO101_Tom View Post
Oh, nothing wrong with what you wrote, i agree with it. The FMs really need to be reworked. I just wrote, because the cooling water is interesting, but until a broken wing is not a fatal damage, what can we expect at all the other damage ? Maybe not a big deal, but I was stunned
well when my left aileron was hit, it lost maybe about a third of its surface(only of the aileron), and i immediately could feel the decreased rollrate,so that is modeled correctly i think....regarding the damaged rads....im not really sure what was hit,...but i lost liquid for a short period.it didnt last long until my plane seemed to be leakproof again.
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  #76  
Old 10-12-2011, 07:46 AM
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regarding the turn rate of the bf...i know that is no evidence and im not an expert on these matters, but i recently watched an interesting docu on history channel where a former german fighter pilot states that the early bfs were really agile planes which could follow a turn of the spits in certain conditions for a certain time.he also stated that the spits were overall better turners, but that expierenced pilots knew how and when they were able to follow a turn and shoot the enemy.i found it interesting that he also said that he was dissapointed by the late g models cause they became too heavy to be used as turn fighters.
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  #77  
Old 10-12-2011, 10:19 AM
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Originally Posted by CWMV View Post
So what is it at 1.35, or even better the MAX speed using the 1.42 emergency setting...Ill bet its closer to 490, unless you believe that the max speed wouldn't change with more power.
We are talking about MAX speed, right?
Exactly. The notleistung 20% extra power would not cause any acceleration (only up to 10 km/h)? Nonsense.


source: www.enginehistory.com
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  #78  
Old 10-12-2011, 12:56 PM
TomcatViP TomcatViP is offline
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Quote:
Originally Posted by IvanK View Post
"What is the historical 109 turnrate?" .... same problem as always it depends whose data you believe !. It also depends on how the turn is being flown in each aircraft. You after Sustained or instantaneous ?

These charts are reasonable for sustained turn performance:

http://www.spitfireperformance.com/spit109turn.gif

Spit V 109 Turn times.
Those curves are contestable regarding how the both planes shld hve performed:
- first: on the ground of the knowledge of both nation at the time of the test/calculation (1940)
- Secondly : on the base of the contradictions that a modern analysis would tell us

First pt : If British engineer in 1940 had let an elliptical winged (EW) fighter be the most advanced defense they had allowed to be put on the frontline, for sure they were not aware of the advance Germans had made in that grounds. Remind that EW are the panacea only when dealing with inviscid flows etc... etc... Look at max Cl of both plane, max Pow and wing loading.

I know that I can be annoying but those value and the fact that the wing thickness of the spit is lower tell us that there SHLD be an inversion in turn radius as the speed decrease. in other terms the spit shld turn tighter at high speed but hve a greater radius of turn when the speed is low.

In other words they couldn't hve found any other value as their assumptions were made on false grounds.

Last edited by TomcatViP; 10-12-2011 at 01:02 PM.
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  #79  
Old 10-12-2011, 02:43 PM
Skoshi Tiger Skoshi Tiger is offline
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Originally Posted by TomcatViP View Post
in other terms the spit shld turn tighter at high speed but hve a greater radius of turn when the speed is low.
What do you mean by the term 'tighter'? Degrees per second or radius?

Sounds counter intuitive to me.
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  #80  
Old 10-12-2011, 03:42 PM
TomcatViP TomcatViP is offline
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It's a rather long reply needed here indeed.

I think I did alrdy give an answer.

To make it short here :
1st we are talking of turn radius as we are dealing with cte speed turn
2nd it's almost certain that at much of the speed range the SPit had an instant turn speed greater than the 109 as here Wing area rules (at comparable wingspan, nose authority etc.. etc... )
3rd at cte speed, the drag generated by the wing in a turn attitude (AoA) and power to weight ratio are the keys. Simple calculation give you a result dependent only of Wing surface and Power to weight ratio as they are based on simpler theory that does not apply to high speed fighter and high G ( high AoA) turns.

In their calculation they are in effect minoring the drag of the Spit wing.
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