Author Topic: comparing  (Read 7023 times)

Offline LCADolby

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Re: comparing
« Reply #180 on: February 15, 2014, 04:02:19 PM »
Got quiet in here...

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Offline Ack-Ack

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Re: comparing
« Reply #181 on: February 16, 2014, 06:48:38 PM »
Local details!!!  This was orientation that everyone went through in every theater. This was not "continued" training that ackack was implying.

All of that stuff was considered training, just like the briefing/classes that pilots had to go to on such mundane things like aircraft recognition, etc.  Training never stopped, even on the front lines.

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Offline BnZs

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Re: comparing
« Reply #182 on: February 18, 2014, 11:01:10 AM »

Oh and if you do find actual usable information, be sure to post about it on other sites as well; I have played just about every WWII simulator since Chuck Yeager's Air Combat more than 20 years ago, and I cannot recall one game where a 109 doesn't out turn a Pony slow and low.
Useable information such as wing-loading data and NACA reports regarding lift coefficients and such? Yeah, I'll post some of them as soon as I find them.

Yeah, not once have I said the P-51 should out turn the 109 low and slow. Nice little attempted bait and switch there, it won't work.

 Other sims? Are you using a sort of "wisdom of crowds argument here?" Okay, I'll play-I have flown many sims containing WWII aircraft, including Microsofts CFS and most iterations of IL2, and I've never seen another one where Jug turn performance matched or exceeded that of the P-51.
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Offline BnZs

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Re: comparing
« Reply #183 on: February 18, 2014, 11:04:52 AM »
bnz what do you think that Turning Circle chart is displaying?

HiTech

Circles have "radii"...I think it is quite clear what the chart is displaying.

Do I get a question now? How did the Allied side get their notions about relative turn performance of two of their own airplanes exactly wrong?
"Crikey, sir. I'm looking forward to today. Up diddly up, down diddly down, whoops, poop, twiddly dee - decent scrap with the fiendish Red Baron - bit of a jolly old crash landing behind enemy lines - capture, torture, escape, and then back home in time for tea and medals."

Offline BnZs

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Re: comparing
« Reply #184 on: February 18, 2014, 11:18:28 AM »
You realize this entire wall of verbage is essentially saying "You have no proof regarding relative turn performance of planes, all you have is the opinions of pilots which is hearsay" blah blah blah.
 Fine, we'll roll with that argument. By the same logic have no PROOF that a A6M2 "Zero" fighter could out-turn a Hurricane, a Spitfire, a P-40, or even a heavily laden B-17. Fair?

And then you post this:

They were experienced combat pilots from Africa with several aces, they had first-hand knowledge from Joe Foss who had just spent months engaging zeros. And if that was not enough, it was well known from 3 years of combat in the Chinese theater that Japanese planes were extremely maneuverable. There was no excuse. It just goes to prove how stubborn some people can be when presented with FACTS.

This bears repeating for emphasis.
"It was well known from 3 years of combat in the Chinese theater that Japanese planes were extremely maneuverable. There was no excuse"

So suddenly you're taking the same sort of pilot anecdote you say is useless and unreliable and lambasting, in hindsight, a group of pilots for not taking it as gospel. So is pilot anecdote regarding relative maneuverability relevant or not? Choose one.



"Crikey, sir. I'm looking forward to today. Up diddly up, down diddly down, whoops, poop, twiddly dee - decent scrap with the fiendish Red Baron - bit of a jolly old crash landing behind enemy lines - capture, torture, escape, and then back home in time for tea and medals."

Offline Fox

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Re: comparing
« Reply #185 on: February 18, 2014, 12:49:02 PM »
I tried to look up some information regarding the turn performance of the P47 and the P51, but I didn't find anything that showed a direct comparison.  The stuff I found has probably already been posted, but just in case here are a couple of things I found. 

http://www.wwiiaircraftperformance.org/p-47/P-47_versus_FW-190.pdf

http://www.wwiiaircraftperformance.org/sl-wade.html

http://www.wwiiaircraftperformance.org/fw190/ptr-1107.pdf



Offline hitech

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Re: comparing
« Reply #186 on: February 18, 2014, 01:19:47 PM »
Circles have "radii"...I think it is quite clear what the chart is displaying.

Do I get a question now? How did the Allied side get their notions about relative turn performance of two of their own airplanes exactly wrong?

You are 100% correct, all circles have radi, by definition.

But you did not answer what you believe that chart is displaying.

HiTech


Offline BnZs

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Re: comparing
« Reply #187 on: February 18, 2014, 01:56:16 PM »
You are 100% correct, all circles have radi, by definition.

But you did not answer what you believe that chart is displaying.

HiTech


Sorry, I believe the chart is simply ranking relative turn radius. Your next question will be something along the lines of "How can I use this as data for the sim?" which you can`t. Nor do I think a flight game that works this well needs to be tinkered with lightly anyway. A sim that uses *calculated performance* (as opposed to simply saying "this is what the plane should do" and plugging it in to the code) and mostly gets it very, very close  is a triumph.               
"Crikey, sir. I'm looking forward to today. Up diddly up, down diddly down, whoops, poop, twiddly dee - decent scrap with the fiendish Red Baron - bit of a jolly old crash landing behind enemy lines - capture, torture, escape, and then back home in time for tea and medals."

Offline hitech

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Re: comparing
« Reply #188 on: February 18, 2014, 02:18:50 PM »
Sorry, I believe the chart is simply ranking relative turn radius. Your next question will be something along the lines of "How can I use this as data for the sim?" which you can`t. Nor do I think a flight game that works this well needs to be tinkered with lightly anyway. A sim that uses *calculated performance* (as opposed to simply saying "this is what the plane should do" and plugging it in to the code) and mostly gets it very, very close  is a triumph.               

What is "relative turn radius", btw I am not trying to be obtuse, you are trying to use a diagram, but have in no way used any defined terms that can even be analyzed. I really have no idea what "relative turn radius" is?

I know what corner speed is.
I know what instantaneous turn rate is.
I know what sustained turn rate is.

But I really have no idea what you think "relative turn radius" is.

HiTech


Offline wpeters

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Re: comparing
« Reply #189 on: February 18, 2014, 03:06:54 PM »
What is "relative turn radius", btw I am not trying to be obtuse, you are trying to use a diagram, but have in no way used any defined terms that can even be analyzed. I really have no idea what "relative turn radius" is?

I know what corner speed is.
I know what instantaneous turn rate is.
I know what sustained turn rate is.

But I really have no idea what you think "relative turn radius" is.

HiTech




How do you model this type of thing in the game. I am able to follow what you guys are talking about. I guess my question is what type of information do you use for this type of modelling :salute
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Offline LCADolby

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Re: comparing
« Reply #190 on: February 18, 2014, 03:08:13 PM »
"Relative Turn Radius" as a term does not exist.
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Offline muzik

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Re: comparing
« Reply #191 on: February 18, 2014, 04:07:11 PM »
You realize this entire wall of verbage is essentially saying "You have no proof regarding relative turn performance of planes, all you have is the opinions of pilots which is hearsay" blah blah blah.

No, that is not all I said. I also made it abundantly clear that, not only were their beliefs based on hearsay, but in spite of ABUNDANT evidence to the contrary, they refused to accept that their beliefs were wrong. Sound familiar?

Fine, we'll roll with that argument. By the same logic have no PROOF that a A6M2 "Zero" fighter could out-turn a Hurricane, a Spitfire, a P-40, or even a heavily laden B-17. Fair?

Seriously dude, you are losing your mind. And you conveniently left out part of that ridiculous sentence; WHO has no proof?

If you are referring to me, you are correct. I have no proof to offer you because I don't have access to any of the turn performance reports of any of those aircraft and I do not intend on wasting my time looking for them. I wasn't making the claim that a Zero could out turn anything. I was relating a story about stubbornness and pilots being WRONG.

But if you want to change the subject just a little, the BEST EVIDENCE they had AT THAT TIME showed that the Zero could out turn said aircraft and those Spit pilots REFUSED to even give it proper consideration. And we know now, without a doubt, that Joe Foss was right, and the strength of the evidence at the time was likely almost as strong as it is now.

You are the one making unfounded claims, not me. If I chose to assert the Zero could out turn any of them, I would look for proof. What kind of proof would depend on how critical it was to provide it. If it was just to argue on a forum, I might use hearsay. If it was to convince a programmer that their FM was wrong, I guess I would look for the appropriate flight test data.


And then you post this:

This bears repeating for emphasis.
"It was well known from 3 years of combat in the Chinese theater that Japanese planes were extremely maneuverable. There was no excuse"

So suddenly you're taking the same sort of pilot anecdote you say is useless and unreliable and lambasting, in hindsight, a group of pilots for not taking it as gospel. So is pilot anecdote regarding relative maneuverability relevant or not? Choose one.

The accuracy of those claims was NEVER the key point. The point was that those pilots,  even ENTIRE GENERATIONS of people can have biased or flawed BELIEFS even when available information is overwhelming.

Sorry, I believe the chart is simply ranking relative turn radius.       

A great demonstration of the failure to see the difference between general information and specific information.

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Offline muzik

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Re: comparing
« Reply #192 on: February 18, 2014, 04:18:30 PM »
"Relative Turn Radius" as a term does not exist.

Sure it does, as soon as a subject is defined and what the subject is being related to.

The relative turn performance of the P47D11 is better than the P51...

Which could easily be more specific if someone comes up with the turn performance data of the real aircraft.

I don't know if any version of the Jug can out turn a Mustang, but I haven't seen any proof other than hearsay provided.
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Offline BnZs

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Re: comparing
« Reply #193 on: February 18, 2014, 04:45:33 PM »
"Relative turn radius" is very plain English for the turn radii aircraft in *relatIon to one another*.  No different or more obtuse than saying that "Bob is taller than Tom who is taller than John." This does not tell you the exact height of each man, but, if true, it does give you an idea of what the ordering will be.     A ranking of turn  radius size from smallest to largest is what the diagram is trying to convey, unless the author is using the equally plain English words "turning circle" very badly. Now the author may be wrong indeed, but if so he had plenty of company. And such an assertion again begs the question, how did the Allies get it wrong when it came to two of their *own* aircraft? Why did 47 pilots recognize they should avoid turning contests with German aircraft at all costs and then forget this tactical wisdom IF the P-51s they transitioned into were even worse turners? And why on Earth would German pilots suffer the same delusion.   
"Crikey, sir. I'm looking forward to today. Up diddly up, down diddly down, whoops, poop, twiddly dee - decent scrap with the fiendish Red Baron - bit of a jolly old crash landing behind enemy lines - capture, torture, escape, and then back home in time for tea and medals."

Offline Ack-Ack

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Re: comparing
« Reply #194 on: February 18, 2014, 07:03:11 PM »
I don't know if any version of the Jug can out turn a Mustang, but I haven't seen any proof other than hearsay provided.

In January of 1943, the RAF's AFDU (Air Fighting Development Unit) conducted a trial using the P-47C against the Spitfire IX, Typhoon Ib, P-38F and the Mustang X.  Below is the results of the trial against the Mustang X.

Quote
P-47C v. Mustang X

31.            Short trials were made against the Mustang X between 20,000 and 27,000 feet, at which heights the performances of the two aircraft are most nearly related. The Mustang is designed as a low altitude fighter.

32.     Performance – At heights below 27,000 feet the Mustang is considerably faster than the P-47 and at that height it is faster than the P-47 by about 10 m.p.h., accelerating away better and maintaining its lead fairly easily. Above 27,000 feet the Mustang still appears slightly faster but no trials could be carried out in the time available.

33.     Climb – The rate of climb of the Mustang at these heights is still better than that of the P-47, but the latter again improved in zoom climbs so that between 20,000 feet and 25,000 feet the Mustang was only 15 seconds ahead of the P-47. Above 27,000 feet the Mustang’s rate of climb is still slightly superior.

34.     Dive – Several full throttle dives were carried out at these heights and I each the Mustang accelerated away from the P-47 and remained in front.

35.     Manoeuvrability – The rate of roll of the P-47 is considerably better than that of the Mustang, which cannot follow sudden changes in direction. In rate of turn, however the two aircraft are practically identical.

Quote
CONCLUSIONS

56.  When flown against the Mustang X (Merlin 65) between 20,000 and 27,000 feet, the Mustang was the faster, and had the better rate of climb. In dives the Mustang was able to accelerate away and remain in front. The aircraft are identical in rate of turn but the P-47 superior in roll. (paras.31-35)

P-47 Tactical Trials


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