BoS Airspeed Graphs - Because Injured! :)

[US63_SpadLivesMatter]

I currently have a broken finger and cannot fly effectively, so I decided to do some testing of aircraft airspeed, as indicated by the game. Tests were conducted at level flight, 100% fuel, no modifications, no weather, using automatic engine management.

 

First are the results for each aircraft:

 

 

Then the mean airspeed for each air force:

 

 

Next, I recorded and plotted the airspeed disparity of the LAGG-3 against its opponents at each altitude:

 

 

Then the YAK-1

 

 

Finally the LA5

 

 

As you can see, only Battle of Stalingrad fighters are shown. If people find these interesting or useful, I will test and plot out the Battle of Moscow or Kuban aircraft if I ever have money for them and a broken finger at the same time.

 

S!

Edited February 26, 2017 by hrafnkolbrandr

[ShamrockOneFive]

That's what you have to do when injured... Find other ways to get flying

 

Really appreciate these. It seems like the Yak-1 Series 69 is slower than I thought. It always "felt" a fair bit faster than the LaGG-3. Probably more to do with acceleration than speed.

[=TBAS=Sshadow14]

 

 

 

Great work..

 

This one will settle a lot of arguments..

LW have a clear advantage and being caught low and slow is the only way they will die (which is the pilots fault)

[Aap]

These graphs are interesting, however the results differ way too much from official game data to be credible. 

Speed on deck from game info: 

La-5:        544 km/h

Fw190:    533 km/h

Bf109G2: 530 km/h

Bf109F4: 522 km/h

Yak-1:     514 km/h

LaGG3:  505 km/h

Edited February 27, 2017 by II./JG77_Kemp

[Finkeren]

These graphs are interesting, however the results differ way too much from official game data to be credible.

Speed on deck from game info:

La-5: 544 km/h

Fw190: 533 km/h

Bf109G2: 530 km/h

Bf109F4: 522 km/h

Yak-1: 514 km/h

LaGG3: 505 km/h

Auto engine management no doubt. It opens radiators way too much and leans mixture too much at low altitude.

[Aap]

 

 

LW have a clear advantage and being caught low and slow is the only way they will die (which is the pilots fault)

 

That is super simplified view on things. True, if LW hangs around at 6k in Bf109's, they will stay safe. But if they plan to protect their ground assets from VVS attack planes, which often operate below 1k, they have to come down and down low La-5 is the fastest aircraft and Yak turns better than any LW aircraft and you have VVS fighters attacking you from above etc. 

[US63_SpadLivesMatter]

Clearly VVS will be at a greater disadvantage on normal servers if they don't take manual control then.

 

Also, are the higher numbers using a lower fuel load? Load seems to make a large difference.

Edited February 27, 2017 by hrafnkolbrandr

[Finkeren]

Clearly VVS will be at a greater disadvantage on normal servers if they don't take manual control then.

 

Also, are the higher numbers using a lower fuel load? Load seems to make a large difference.

AFAIK, top speeds are always calculated using full fuel load.

 

Fuel load does have some impact on top speed, but less than most people think. It's main impact is on acceleration and handling.

[F/JG300_Gruber]

Auto engine management screw up your results.

 

For the yak1 alone, the 485km/h that you get is far from the truth. From my testings last year, on the autumn map (with 15°C at sea level), I was able to keep it steady at 520km/h without overheating.

Edited February 27, 2017 by F/JG300_Gruber

[Nocke]

Concerning the Yak: Perhaps if you fly with technochat on and heat it up until that overheating message pops up you can do that. Without technochat, and taking care not to exceed the max temperatures as given in the specs, its actually close to what the autopilot does. My impression is there is a bug letting that overheat message pop up too late.

[gnomechompsky]

I

 

That is super simplified view on things. True, if LW hangs around at 6k in Bf109's, they will stay safe. But if they plan to protect their ground assets from VVS attack planes, which often operate below 1k, they have to come down and down low La-5 is the fastest aircraft and Yak turns better than any LW aircraft and you have VVS fighters attacking you from above etc.

 

The La-5's speed is very overrated.  For a start its only about 6kph faster than the 190 on the deck which isn't a great deal.  But if you spend the whole time on the deck you are only going to be fighting LW who start with a much bigger energy advantage than you.  

 

Overall the La-5 does not live up to its reputation in the game, and the Yak 1 is a lot better.  

[Blutaar]

When you know your temp limits you can easily fly with 114 degrees of water temp in a Yak for example without techno, just talking about max speed not dogfighting where you open the rad wide enough to not reach these temps and if you starting to chase you just close the rads as much as possible and hold 114°c and you are fine, these temps are 14°c higher then max rated temps in manual and thats at least a bit odd.

 

This engine limitation for some planes and not all needs to be looked at again, it will get only worse later on, max speeds are not just for penis comparison in official manuals, it has a meaning but not with just 1 or 3 mins, its absurd.

I know that these limits are in the manuals but it cant mean that your engine explodes if you do it to long, when it is true that most sorties are flown without any air combat back then, then this limitation makes perfect sense to ensure that in a dogfight your engine will have maximum performance available if needed without looking at your watch every 20 secs.

 

If we really need engine limitations in factory fresh airplanes then ballance it for all not just for some, of course it may make the sim more unfair but maybe it is more realistic, thats what the majortiy of simmers want i thought.

Even WT has a better solution, its limited for all not just some if i remember correctly, 1946 has also a better solution and in DCS im not sure.

 

Dont call me luftwhiner because do you expect american and british and mabye japanese will not be engine limited, im no expert but i thought atleast american and british engines are limited in max performance too like the p40 or german engines, i could be wrong pls correct me then, and if so im totally wrong and i guess just A Luftwhiner, my apologies.

 

OP im sure you didnt want such a discussion im sorry.

About your graph, its nice and im thankful you do such a work but if you want realstic ingame numbers you should disable auto engine managment and fly by technochat, as long aso no temp overheat message apears you are fine, i dont mean the warning message you get when you reach a certain temp which just tells you that you are now over max rated temp, it does no harm, the actual engine destruction timer starts after the termostat icon apear, sry if you already knew it.

[US63_SpadLivesMatter]

Even on manual settings I am not getting anywhere near 544 IAS with the La-5 at 300m. Only managed 530 under boost.

 

Somebody want to give me a set of settings parameters to use?

 

*FWI all this data was collected at highest combat settings. No boost or emergency was used for anything.

Edited February 27, 2017 by hrafnkolbrandr

[=TBAS=Sshadow14]

Please DO NOT balance anything for the "Game" or "Fairness"
Only changes things to match up with history (even if that means LW have a 250kph Speed overhead)

[Blutaar]

Even on manual settings I am not getting anywhere near 544 IAS with the La-5 at 300m. Only managed 530 under boost.

 

Somebody want to give me a set of settings parameters to use?

 

*FWI all this data was collected at highest combat settings. No boost or emergency was used for anything.

Use Stalingrad Autumn for standard ISA condition and go down to 100m.

I reached these speeds:

545kph at 0% cooling cowls, 100% cooling intake and 50% oil radiator

Temps are 230°c engine temp and 105°c oil temps

Hope that helped.

[-=PHX=-SuperEtendard]

1946 has also a better solution

 

1946 doesn't have limits. In regards to manifold pressure it's just max all the time for every plane and if it has some sort of extra addition to the engine (water/methanol) then it goes until the supply runs out.

Edited February 28, 2017 by SuperEtendard

[US63_SpadLivesMatter]

Well I got it there. Not sure how practical it is, but it was there, though it couldn't do it forever, and not without boost.

[Blutaar]

1946 doesn't have limits. In regards to manifold pressure it's just max all the time for every plane and if it has some sort of extra addition to the engine (water/methanol) then it goes until the supply runs out.

Hmm im not sure about that, if i remember correct you overheat after a time of full boost and this limits the duration of max engine boost.

Maybe i remember wrong but i did disable the engine heat option because the AI dosent overheat like me so im not in a disadventage, i am a poor offliner surounded by cheaters with aimbot and 3D radar overlay.

Edited February 28, 2017 by Ishtaru

[ZachariasX]

how is it that the lower the faster?

 

i thought in thinner air a plane would be faster im puzzled here

He must be using what the speedometer is showing: IAS. You are faster up there.

[6./ZG26_Klaus_Mann]

The TAS Difference is much greater in Total Numbers. Because the Relative IAS Difference is quite small the Differences look quite small. 

There is a huge Difference in Altitude Performance once you look at TAS: 

[JG5_Schuck]

Concerning the Yak: Perhaps if you fly with technochat on and heat it up until that overheating message pops up you can do that. Without technochat, and taking care not to exceed the max temperatures as given in the specs, its actually close to what the autopilot does. My impression is there is a bug letting that overheat message pop up too late.

 

Exactly Nocke

A point i've been making for years now.

The techno chat allows you to fly the plane at its theoretical maximum limit and attain speeds you other wise would not be able to reach without skill and practice.