Aircraft ROC Review

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el cid again
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RE: Other Allied Aircraft

Post by el cid again »

ORIGINAL: witpqs

ORIGINAL: el cid again
Another way to look at this is to compare with a A6M2: maneuverability = 28. No way ANY P-38 should be close to that.
Or with an Oscar: maneuverability = 31. IF we put a P-38 - any P-38 - in that class - we have surely got it wrong - and we will not simulate battles properly. Our game P-38 will do well BECAUSE it has lots of punch, lots of survivability, and that is exactly why it should do so. But it should not do well because it is as maneuverable as planes it clearly was not in the same league of.

The historical tests performed were quoted by someone else, and you read them as well as I did. The P-38F was compared to the P-47C. It was noted that the presence of powered control surfaces in the P-38L gave that model about the same MVR as the P-47C.

The closest P-47 model in the RHS database is the P-47D. The formula rates A6M2 at MVR 28 and the P-47D at 32. Logic constrains you to two possibilities:

1) You refuse to accept the tests done historically,

or

2) The formula is wrong and it should rate the P-47D lower than the A6M2.

As I have already written, I think the historical evidence trumps the formula.

And we are talking past each other. But your heart is in the right place - and so is mine - so I shall drop back ten yards and try this again:

The basic problem is (as often is the case of apparent but not real disagreement) one of linguistics;

Or more specifically, one of mathmetics being expressed linguistically;

Or more specifically, that the model term "maneuverability" is (as Joe posted long ago) a misleading one, and it is also a bit unfortunate, insofar as it combines

a) both horizontal and vertical maneuvering and

b) does so for all altitudes

when, IRL, aircraft have very different horizontal and vertical maneuvering performance, and both of those vary greatly at different altitudes.

To put this another way, you cannot treat the value called "maneuverability" in the game as if it relates to the test being cited directly. Or, more properly, you can do that, but it will be misleading and invalid if you do that. It does not yield a more accurate, more correct air combat model to do it that way for a single plane.

Now the Zero is able to out turn a P-47 - but a P-47 can out dive a Zero - and some models of P-47 can out climb some models of zero - and indeed - some models of P-47 are also faster than some models of zero. Any blanket statement that one is "better" than the other is misleading. Instead, some specific models are better than other specific models in some specific ways. Our game forces us to abstract the air combat process - we cannot know exactly what either pilot is trying to do? But IF one has the possibility of out diving the other- and the other has the possibility of out turning the first one - the scales should properly be very similar - it is a competative fight as it were. Remember - we are not able to actually change the model - or even change how the model uses values. It is a fact of life we have to live with. ALL we can do is get all sorts of maneuvering qualities represented in the "maneuverability" value - it is that or just put in one (apprently the starting one is speed alone - which I regard as unsatisfactory).

Historical evidence can tell us lots of things. But in this case, it cannot tell us how to programe fields in our routine? The best we can do is try combinations and then run it - and see if we get history like outcomes. We seem to be doing that fairly well - better than I would have believed possible just looking at it. We are trying to do better still. That is not "ignoring" history. On the other hand, to distort a systematic way to get data is to make the entire process of defining standards and applying them meaningless. There is no "reform" UNLESS we honor the standards we set. Just grab numbers out of your pants - which JF Dunnigan says is better than any system anyway - if you want that. Whatever "feels good" is what you use. It just isn't my philosophy of doing business.
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m10bob
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RE: Other Allied Aircraft

Post by m10bob »

It is a better alternative than vanilla and still allows simulation based on true numbers, especially considering it is all abstract anyway, in all forms from the design room on.
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el cid again
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RE: Other Allied Aircraft

Post by el cid again »

ORIGINAL: Mike Scholl

ORIGINAL: witpqs
The closest P-47 model in the RHS database is the P-47D. The formula rates A6M2 at MVR 28 and the P-47D at 32. Logic constrains you to two possibilities:


I think the real problem with the numbers in all the databases is that the idiot designers went with a "one altitude fits all" concept. At 14,000 a Zero will fly rings around a P-47 (if the P-47 is flying slow enough to be caught); but at 28,000 feet the opposite is true..., the P-47 is more manueverable than the Zero. If every A/C is rated with it's best performance figures at it's best altitude(s), then the numbers won't make sense depending on the altitude of the fight. It's a basic design problem.

Amen. Absolutely correct. And - because Mike has hit the nail on the head - the numbers we use simply must show that sometimes one is better - sometimes the other one is (if maneuverability is a similar value) - or radically different (if maneuverability is not similar). There are other complications as well: they are tactics and initiative. If one side has the drop on the other - and that is the USUAL case in air combat - the defeated plane will not understand it is in an air battle at all until bullets start ripping it apart. In such a case, performance matters a lot less than it seems like on paper. And who has the initiative is probably more related to experience, training, and luck, than we would like to believe. Greenhorns simply won't be paranoid enough to spend all their time looking around. Americans don't have a clue how to see a plane at maximum range - so they won't even try to do that (by which I mean, they will not focus their eyes on the wingtip before searching a sector). But neither will JAAF pilots. And where the clouds/fog are - and the exact way mission altitudes and weather and courses intersect - is luck. Whoever spots the enemy formation 6000 feet below is going to have a better situation - no matter what the plane or the date. Our model factors all this in with die rolls - and it is not a bad solution IMHO. What the model wants to know is "what is the sum of all maneuvering capabilities of the planes on each side" - or possibly "what is the product of them" - and it is not something us purists are comfortable with. It is not a case that I have a different goal than WITPQS or anyone else. It is that we don't have a way to plug in the data in as many senses as we all would like.

Thank you Mike.
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m10bob
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RE: Other Allied Aircraft

Post by m10bob »

Robert S Johnson wrote the story of his wartime career in THUNDERBOLT. His memories of the first P 47 he was issued were that of a very disappointing aircraft which had miserable flight characteristics when flown against British Spitfires.
The plane was sluggish, felt under-powered, could not accelerate and the Spit could just nose up and climb like an angel.
The problem was corrected by getting rid of the 3 blade prop on the earlier C models and installing the big 4-bladed variable pitch monster the Thunderjug was later known for.
Johnson sez the transferrance of power to the engine was now felt in much improved acceleration, which also improved cornering capacity and the plane now could "hang on the prop" fighting for height", much improved over the earlier prop..
I recommend this book to any Thunderbolt fans.

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el cid again
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RE: Other Allied Aircraft

Post by el cid again »

RHS has three models of Thunderbold. The first is the D model - with maneuverability of 32. The last is the N with maneuverability of 37. A 5 point difference (using the full formula value) is a good indicator that in fundamental terms (vice something technical we cannot see like propeller type) - there was a great difference from early to late. Propellers matter - someone produced P-51 data that showed the SAME plane with different props - and the performance varied significantly. But we have to go with the normal prop / performance for any given model.

The third model is the Thunderbolt II in RAF service: its rating is 34.
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witpqs
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RE: Other Allied Aircraft

Post by witpqs »

ORIGINAL: Mike Scholl
I think the real problem with the numbers in all the databases is that the idiot designers went with a "one altitude fits all" concept. At 14,000 a Zero will fly rings around a P-47 (if the P-47 is flying slow enough to be caught); but at 28,000 feet the opposite is true..., the P-47 is more manueverable than the Zero. If every A/C is rated with it's best performance figures at it's best altitude(s), then the numbers won't make sense depending on the altitude of the fight. It's a basic design problem.

Certainly agree. I think also many aircraft have different comparisons against each other even at the same altitude but when at different speeds. I remember reading how the Zero suffered a much greater loss than did other aircraft of certain maneuver characteristics when at greater speeds, because it had very large control surfaces. The very thing that made it great at low speed made the pilot need the strength of a mule at higher speed.
el cid again
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RE: Other Allied Aircraft

Post by el cid again »

Concur your observation/facts.
el cid again
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RE: Other Allied Aircraft

Post by el cid again »

I got an answer about the "knee" in air combat. It does not clearly indicate we should compress the data. Apparently there are several "knees" and the biggest problems occur when there are too many aircraft in a fight. [I suspect here that - without an ammunition limit - a high rated fighter will kill and kill and kill over again - but if there are not enough targets to do that - the result won't be so badly skewed]

I am about to issue the final set and freeze everything. I will wait a few hours for comments here about wether or not we should compress the data? I have a sense it isn't worth doing - but SOMETHING we did before worked - and this was one of the steps we took. However, I am not sure that downrating the better planes is good simulation? We also could multiply the formula value by a constant (K) - say 0.9 (tiving us 38 at the top end) or 0.8 (giving us 34 at the top end) or 0.85 (giving us 36 at the top end). That would preserve most of the relative differences in a uniform way - and be a whale of a lot of data entry for me! 252 planes times 22 scenarios - ugh. So far I am not seeing a big problem in testing.
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Bliztk
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RE: Other Allied Aircraft

Post by Bliztk »

0.8 compression is a good idea. If you send me the two correct air files (CVO/EOS) I can pump out the rest 20 scenarios myself
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witpqs
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RE: Other Allied Aircraft

Post by witpqs »

ORIGINAL: m10bob

I recommend this book to any Thunderbolt fans.

It's a good one. BTW I worked with his younger cousin, who refers to him as 'Uncle Bob'.
el cid again
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RE: Other Allied Aircraft

Post by el cid again »

I have a clear recommendation not to compress - so we will try it without. We can always do it later if we need to.
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