Fulqrum Publishing Home   |   Register   |   Today Posts   |   Members   |   UserCP   |   Calendar   |   Search   |   FAQ

Go Back   Official Fulqrum Publishing forum > Fulqrum Publishing > IL-2 Sturmovik

IL-2 Sturmovik The famous combat flight simulator.

Reply
 
Thread Tools Display Modes
  #41  
Old 11-27-2008, 02:32 PM
Rama Rama is offline
Approved Member
 
Join Date: Nov 2007
Posts: 138
Default

Quote:
Originally Posted by PE_Tihi View Post
So please no mystifications about the different data from different sources.
Ok... I see... you're an expert.

I will shut up then... I'm just a poor ignorant that try since years to reduce huge discrepancies (up to 20%) in some plane real flight datas (D520 as an exemple)...
Reply With Quote
  #42  
Old 11-27-2008, 02:51 PM
PE_Tihi PE_Tihi is offline
Approved Member
 
Join Date: Oct 2007
Posts: 78
Default

Quote:
Originally Posted by IceFire View Post
You know I had started typing a big long message but its not worth it.
I undestand completely how you feel, IceFire, and you re probbably right- it isn't worth it.
I remember you from other discussions elsewhere, where you always kept a correct and polite tone. No offence has been meant with what I wrote, and I certainly called the plane performances grotesque, not you.

Quote:
Originally Posted by IceFire View Post
You know I had started typing a big long message but its not worth it.

Also where is this information about which versions of the I-16 are armed with cannons and which are not plus the weight information and whatever else you've got.
There is quite a lot to be found in the net about the I16. I am sending you a good link to a russian page:

http://i16fighter.narod.ru/mods/mods.htm

Only parts of the page have got an english version, regretably not the structural and flight data. In spite of the cyrilic alphabet, I am sure you are going to recognize the weight values, empty and takeoff, in the lines 9 and 10 of a table for the different I16 variants on this page, as well as climb to height numbers at the lines 17 and 18. The site is very comprehensive, going to such details as the armament weights, bullet weights , muzzle velocities, etc, etc. With ammunition and structural strenghtening, the weight difference of mg and gun armed versions is about 100 kg.
Cannon armed development of type 24 was type 28, with the same M63 engine, so you can compare these two.
Type 27 had the less powerful M62.
The weights given at the page are somewhat on the low side - other sources give an empty weight of up to 1490 and loaded one of 1915-1941 kg for the type 24.
In any case, Loaded weight of the game type 24 is about 1870 kg, if I remember well- check in the Il2 Compare , please.

Variant armament is given in the third line from below.

Last edited by PE_Tihi; 11-27-2008 at 03:17 PM.
Reply With Quote
  #43  
Old 11-27-2008, 03:37 PM
Zoom2136 Zoom2136 is offline
Approved Member
 
Join Date: Oct 2007
Posts: 224
Default

Well you can be assures that whatever performance numbers Oleg uses you will find someone that can offer contradicting evedence, from who knows where (or source).
Reply With Quote
  #44  
Old 11-27-2008, 04:05 PM
PE_Tihi PE_Tihi is offline
Approved Member
 
Join Date: Oct 2007
Posts: 78
Default

Quote:
Originally Posted by Zoom2136 View Post
Well you can be assures that whatever performance numbers Oleg uses you will find someone that can offer contradicting evedence, from who knows where (or source).
The data is not from somewhere, but from the russian book

М. Маслов "Истребитель И-16" - M.Maslov 'I16 Fighter'

Mr. Maslov used in all probability the same sources as Oleg does too -
'Samoletostroenie v SSSR. 1917-1945 gg.' published by the TsAGI- Soviet central aerodynamical institute, and the 'History Of Plane Construction in USSR', by V.B. Shavrov.
If you like that more, i could give you an excerpt from the later book, too.

Even without that much reading, one who has an idea of the WWI plane performances would recognize the 21m/s climb ( or 24 as it earlier was) as wholly unrealistic number.
Contemporaries of I16 type 24 with the engines of about 900-1000 hp had climbs of about 15 m/s at most. For the climbs over 20m/s an 1500 HP + engine was needed.And that means La5/7, or 109G, etc. The value is typical for the mid and late war planes.

And I ll be surprised if all this changes your opinion
Reply With Quote
  #45  
Old 11-27-2008, 11:10 PM
IceFire IceFire is offline
Approved Member
 
Join Date: Apr 2008
Posts: 1,879
Default

Thank you for the link. I'm always interested in new data (or at least new to me). So...did anyone bring this up with Oleg....back a few years ago when it still mattered? Its still good to have more than one source of data if possible..maybe Oleg has conflicting data. Where does this come from BTW?
__________________
Find my missions and much more at Mission4Today.com

Last edited by IceFire; 11-27-2008 at 11:17 PM.
Reply With Quote
  #46  
Old 11-28-2008, 12:57 AM
zapatista's Avatar
zapatista zapatista is offline
Approved Member
 
Join Date: Oct 2007
Posts: 1,172
Default

i dont think having published data from various contradictory sources is a problem, or that it justifies for oleg not to openly quote his BoB aircraft performance charts and the sources he used.

amongst the data sources available some will be more accurate, and based on direct performance testing in a controlled environment (like using captured aircraft, factory performance testing, contruction plans and blue prints etc), and some of these reference texts will stand out as being more comprehensive and reliable then others. in the 50 yrs since ww2 these historical aircraft performances have been analyzed, compared, and even new performance tests have been made with historical aircraft or reproductions built.

the same problem of, "what data can you trust", exists in every scientific discipline, and there is fairly simple ways to cut through the accumulated evidence in an objective way and source some "close to accurate" numbers, these SHOULD then be reproducible in a SIMULATOR on a computer if it claims an accurate flight model.

right now some of the aircraft behavior is down right silly, the numbers for the i-16 being a perfect example. the aim of having disclosure of flight performance characteristics in BoB, with a similar program like il2-compare, is to avoid those extreme "errors" (which in case of the i-16 were probably deliberate)
Reply With Quote
  #47  
Old 11-28-2008, 01:56 AM
Al Schlageter Al Schlageter is offline
Approved Member
 
Join Date: Oct 2007
Posts: 657
Default

Didn't Oleg say he couldn't say where he got his data from, at least for the Soviet a/c > non discloser restraint.
Reply With Quote
  #48  
Old 11-28-2008, 05:15 AM
ElAurens's Avatar
ElAurens ElAurens is offline
Approved Member
 
Join Date: Oct 2007
Location: The Great Black Swamp of Ohio
Posts: 2,185
Default

Quote:
Originally Posted by PE_Tihi View Post
What could be the reason for 'balancing' of the Japanese planes against US Navy types- beats me.
Sales of the game in Japan.

It's all about money.
__________________


Personally speaking, the P-40 could contend on an equal footing with all the types of Messerschmitts, almost to the end of 1943.
~Nikolay Gerasimovitch Golodnikov
Reply With Quote
  #49  
Old 11-28-2008, 06:51 AM
PE_Tihi PE_Tihi is offline
Approved Member
 
Join Date: Oct 2007
Posts: 78
Default

Quote:
Originally Posted by Al Schlageter View Post
Didn't Oleg say he couldn't say where he got his data from, at least for the Soviet a/c > non discloser restraint.
Well, Oleg said too, that the Il Compare being inacurate and meant to help newbies only, only way to get the performance numbers is to fly the tests yourself. Meaning 1C hasn't got the performance numbers of the planes they released? Got them but won't tell us? Or that 1C signed non a disclosure restraint with themselves? ))))))))

Cube , in his threads 4-5 years ago already mentions the TsAGI book as the Oleg's bible.
The statement you quote is another mystification-you won't find 21 m/s as the climb rate for I16 anywhere- if you find a source claiming this , i ll pay you a dinner. And I ll pay you two if you find 24 m/s as it once has been in the game.
Reply With Quote
  #50  
Old 11-28-2008, 07:05 AM
PE_Tihi PE_Tihi is offline
Approved Member
 
Join Date: Oct 2007
Posts: 78
Default

Quote:
Originally Posted by IceFire View Post
Thank you for the link. I'm always interested in new data (or at least new to me). So...did anyone bring this up with Oleg....back a few years ago when it still mattered? Its still good to have more than one source of data if possible..maybe Oleg has conflicting data. Where does this come from BTW?
The data is from the russian book

М. Маслов "Истребитель И-16" - M.Maslov 'I16 Fighter'

No doubt he used the TsAGI book as the main data source. ( See a post above)

Cube wrote an excelent series of posts 5 years ago:

http://www.simhq.com/forum/ubbthread...page=0&fpart=1

http://www.simhq.com/forum/ubbthread...page=0&fpart=9

http://www.simhq.com/forum/ubbthread...page=0&fpart=1

http://www.simhq.com/forum/ubbthread...=0&Search=true

I did write to Oleg something like 2 years ago, and wrote some posts on the UBI and some other fori.
Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 05:51 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright © 2007 Fulqrum Publishing. All rights reserved.