4.11 F4U Performance

[SturmKreator]

Originally Posted by sawyer692

Consistent crashes to desktop after hosting for just a few minutes.

Also, F4U is nerfed! This is my squad's primary fighter and it is now a sluggish chunk of metal in the sky that overheats 2 minutes after takeoff. Takes a very long time to get up to speed. Any chance of putting is back to what it was?

The rest of the patch is spot on and I applaud the work TD does

this is a simulator not a arcadish game, in the oleg worlds was a lot of mistakes, now TD fix them, if you dont like it, you can leave the sim, my fw190 was nerfed much more, now never reach the 730km/h but is a simulator not a blazing angels. Now I have to learn how to fight again.

TD you rock.

[sawyer692]

Originally Posted by IvanK

Do you have any Real world test data that provides acceleration times to 260 knots ?

Also be aware that Drag values for external stores and pylons are now a lot more comprehensive than the simple model used previously. So Dont expect the same acceleration in 4.11 as you saw in 4.10.1 wheb carrying external stores.

Also in what way do you consider the F6F's to be "nerfed" ?

Finding real world data that provides that particular time does not appear to be available.

I'm aware of the new drag imposed on external stores. The problem exists with default loadout also.

I've not tackled the F6F yet, squad mates are reported it is also sluggish. I suppose that ones next.

My point here is: a carrier borne aircraft should be able to easily take off from a carrier and that is not the case right now. Comparing real world videos to what can be done in the sim is pretty good evidence, IMO.

I'll post some numbers soon comparing 4.101 to 4.11

[IvanK]

We look forward to your analysis

[h0MbrE]

Here is the data on the F4U-1 and others. Hopefully this will clarify things. It's pretty "cut and dry" that it is now way under modeled in the sim.


http://www.wwiiaircraftperformance.o...4u-1-02334.pdf

http://www.wwiiaircraftperformance.o...f4u-1d-acp.pdf

The whole article for all the Corsairs:
http://www.wwiiaircraftperformance.org/f4u/f4u.html

Pretty much every other airplane:

http://www.wwiiaircraftperformance.org/

[IvanK]

Originally Posted by h0MbrE

Here is the data on the F4U-1 and others. Hopefully this will clarify things. It's pretty "cut and dry" that it is now way under modeled in the sim.


http://www.wwiiaircraftperformance.o...4u-1-02334.pdf

http://www.wwiiaircraftperformance.o...f4u-1d-acp.pdf

The whole article for all the Corsairs:
http://www.wwiiaircraftperformance.org/f4u/f4u.html

Pretty much every other airplane:

http://www.wwiiaircraftperformance.org/

"that it is now way under modeled in the sim"

How so ? How about some examples in Game compared directly with the performance from the references shown ? How does this also compare with 4.10.1 ?

[sawyer692]

Well, after a couple hours testing, here is what I found (F4U-C):


Speed- 100% fuel, 100% prop, appropriate supercharger settings

3000ft
4.101 -271kias
4.11 - 250kias

20,000ft
4.101 – 222kias
4.11 - 160kias



Carrier takeoff – carrier 28 knots, 100%fuel, 100% prop, takeoff flap setting, speed is from chocks release to clearing bow threshold

4.101- 96kias
4.11 – Upper 80s kias

Carrier takeoff – carrier 16 knots, 100%fuel, 100% prop, takeoff flap setting, speed is from chocks release to clearing bow threshold

4.101 – 85kias
4.11 - upper 70s kias

Carrier with ordinance

Rockets minus 10kias from 4.101
5x500 lb bombs minus 10kias from 4.101
2x1000 lb bombs minus 10 from 4.101 but dipped way below carrier and drug landing gear



Speed to 260kias, from standstill on runway, flying straight and level at 150ft

4.101 – 1min 15secs
4.11 – 1min 45secs


Some of the speed numbers in 4.101 are more precise due to the hud mod (the only mod on my sim)

Granted some of the differences may be slight on a few of the items but "feel" much greater in the sim. Either way, it is a slower aircraft now.

I have to ask; What did you guys do to the FM? I found nothing in the manual.

[h0MbrE]

I have one question that may clarify something for me on the matter of the F4U as well. I realize the difference between indicated airspeed and true airspeed. My question is: Does the sim take the correlation between these into account? Or does it factor the indicated airspeed as the true airspeed or visa verse?

How so ? How about some examples in Game compared directly with the performance from the references shown ? How does this also compare with 4.10.1 ?

I will be doing some thorough testing with some of my squad mates over the next week or so and will report our findings. There are a few guys on the squad that live and breath this stuff and I want to involve them in the research to make sure I don't miss anything relevant (whether it proves or disproves that there are any errors in the modeling).

Will report back as soon as we feel we have accurate and complete data to share. As for now, thank you for listening! All the work you guys do to support this sim is highly appreciated.

[IvanK]

All the published performance data is TAS. So when comparing Sim test performance to published data use TAS as well. Wonder woman view gives TAS.

Also there is always an issue with Atmosphere so do your tests Crimea Midday.

[IvanK]

Sawyer. What supercharger settings (3) were you using in your 20,000ft test ? and on what map.
a 60KIAS diff is huge.

[h0MbrE]

Originally Posted by IvanK

All the published performance data is TAS. So when comparing Sim test performance to published data use TAS as well. Wonder woman view gives TAS.

I think this may be part of the problem. The new top speed of the F4U in the sim is around 270kias (311mph). That is almost exactly the max IAS of the aircraft in the performance data. The truth is the actual TAS of the aircraft in the performance test was 431mph (375kias).

I am referring to this document from some of the 1943 official performance tests:

http://www.wwiiaircraftperformance.o...4u-1-02334.pdf

Not sure what you mean by "Wonder woman view" unless you are referring to the hud. I fly mostly full real anyhow but for our tests I will use the hud for reference.