Need some help from the community

[Crump]

Hi Everyone.

 

I have the documents and finishing the mathematical analysis but I need some help in preparing two reports for the Developers.

 

If anybody has the time it would REALLY help out if I could get some films of in game flight behaviors.

 

 

Aircraft set up for both test:

 

Take 100% fuel, wing MGFF (but NOT the 90 round option).

 

Altimeter set to sea level on a standard day NOT nearest airfield.

 

 

Test procedures:

 

1.  I need a film of the the FW-190 is a sustained climb paying close attention to the manifold pressure.

 

To do this, set your altimeter to sea level on a standard day.  Take off and put the power lever in the 1.32ata @ 2400U/min detent and leave it alone.  Climb at 280 kph to 290 kph (Best Climb as listed in the POH).  Watch the manifold pressure and DO NOT MOVE the power lever.  Need to record the drop in manifold pressure as you climb to the 1st Gear supercharger FTH.  

 

 

2.  Next film is a power off FULL stall test.  That means we take the stall to the point the airplane departs controlled flight.  It is not minimum controllability but actual departure we are looking for...

 

Again, altimeter at sea level on a standard day.  

 

Take the aircraft up to 3000 meters altitude.  Put the airplane in slow flight about 20 kph above the stall point.  Maintain altitude and heading (+ or - 10 degrees).  Reduce power to idle and gently pull back the stick slowing the aircraft at a rate of about 2kph per second.  It does not have to be exact, just do not be faster than 2kph/sec.  Use rudder to maintain heading and keep the wings level.  If that cannot be done, record it, do it a couple of times and then use ailerons to keep the wing level for the next run.

 

Note the speed that the airplane DEPARTS not when you think you have no control but the moment the airplane is making large uncommanded movements and you are just along for the ride.

 

Try and do at least two runs, the more you do the better the data.

 

Thanks.

 

Crumpp

[CUJO_1970]

I'm having technical problems (hardware) that I can't seem to figure out and so I can't fly so I'm out. Sorry.

 

The only things I have recorded right now are many hours of fights online on DED Normal Server. No use for controlled tests though unfortunately.

[Hutzlipuh]

Test conditions should be Autumn map  , 12:00 Takeoff?

For the stall test stabilzer at what? 0 on the trim gauge?

also do you require the track file directly?

Edited October 15, 2016 by Hutzlipuh

[Crump]

 

 

Test conditions should be Autumn map , 20 degrees Celsius , 12:00 Takeoff? For the stall test stabilzer at what? 0 on the trim gauge? also do you require the track file directly?

 

Trk file is fine but fraps is better....I would think because it is more convenient to view.

 

Yes, autumn map and thanks for mentioning that!!   It is more important to ensure your altimeter is set to standard.  That will give you pressure altitude....and that is density altitude on a standard day!  

 

The stabilizer should be in trim for the condition of flight.  In other words, use it as needed so you do have to fight the airplane and can fly smoothly!

 

Thanks for the help with this!  I am stuck doing recurrent training online. 

[Hutzlipuh]

Trk file is fine but fraps is better....I would think because it is more convenient to view.

 

Yes, autumn map and thanks for mentioning that!!   It is more important to ensure your altimeter is set to standard.  That will give you pressure altitude....and that is density altitude on a standard day!  

 

The stabilizer should be in trim for the condition of flight.  In other words, use it as needed so you do have to fight the airplane and can fly smoothly!

 

Thanks for the help with this!  I am stuck doing recurrent training online. 

 

OK thanks for the fast reply....

did a quick crude flown test (shes so responsive its hard to be steady at climb, between 275-295 using the HUD) ... Altimeter to standard , switch happens at ~ 2550 m , ata dropped to pretty much exactly 1.1 ATA

 

 

EDIT will videocapture with shadowplay and upload to youtube and post the link.....

Edited October 15, 2016 by Hutzlipuh

[Crump]

 

 

275-295 using the HUD)

 

Use indicated airspeed off the airspeed indicator if the HUD is giving you True Airspeed.

 

Does she maintain 1.32ata until ~ 1250 Meters altitude without you moving the power lever and after the shift, does it return to 1.32ata? 

[Hutzlipuh]

Use indicated airspeed off the airspeed indicator if the HUD is giving you True Airspeed.

 

Does she maintain 1.32ata until ~ 1250 Meters altitude without you moving the power lever and after the shift, does it return to 1.32ata? 

does the HUD show TAS? dammit....then im gonna do that again i think :D

[Crump]

It  does not really matter.  We are checking the operation of the Kommandgerat found in the FW-190.  It should maintain 1.32 ata up to ~1250M FTH and reestablish 1.32ata after the gear change at 2700 Meters all on its own without you touching the power lever.

 

The power lever stays in the "climb and combat power" detented position.

Thanks!! for doing this!

Edited October 15, 2016 by Crump

[Hutzlipuh]

It  does not really matter.  We are checking the operation of the Kommandgerat found in the FW-190.  It should maintain 1.32 ata up to ~1250M FTH and reestablish 1.32ata after the gear change at 2700 Meters all on its own without you touching the power lever.

 

The power lever stays in the "climb and combat power" detented position.

Thanks!! for doing this!

OK heres the first Video...if you require me to use the cockpit-gauge please tell me...ATA drops a little sooner then 1250.... and switch to second gear around 2600 m...

 

see here:

 

https://youtu.be/iUt7YhbJHV8

 

 

Edit : didnt touch the throttle until switch happend when i level out and reduce to continous....minimal amount of jitter in the throttle potentiometer makes it display the throttle % in HUD...its a pretty old x45 :D

Edited October 15, 2016 by Hutzlipuh

[Hutzlipuh]

Stall test :

 

https://youtu.be/0UAw6GVGWpo

 

Weird that it went over left with no torque... should just take its nose down normally?

 

stall was first short...i decided to just hold controls steady...then she went over....

 

If you require me doing more or something different in the tests tell me please...

Edited October 15, 2016 by Hutzlipuh

[Crump]

 

 

If you require me doing more or something different in the tests tell me please...

 

Climb test is perfect!

 

You lost a little altitude on the stall but otherwise useful.  If you could repeat it a few times (try not to lose the altitude) under the same conditions it would be fantastic.  The more data points, the better. 

[Dr_Molem]

Afaik, the HUD shows CAS, not TAS.

[Crump]

Ok, that returns a Clmax in that gives good agreement with the 1.17 the devs have stated they are using.  

 

I need more data points!  

 

This will help us to know the "environment" we are dealing with and lead to some good stuff that can help the players and the devs too.

[Hutzlipuh]

More stall tests:

 

first one was done intentionally with AUTOLEVEL ON

 

at the end im trying a right and left snaproll :D

 

could take a while to process.... 13 mins from edit time it says...(its a 2,9 gb videofile , 60fps ,h.264, 50mbps)

 

https://youtu.be/XkBMRjRo9lc

Edited October 15, 2016 by Hutzlipuh

[Crump]

Afaik, the HUD shows CAS, not TAS.

 

 

Good to know and thanks!  At that altitude and airspeed, there is zero PEC anyway.  

 

That changes things too.  Has anyone ever built a PEC curve using game data?

More stall tests:

 

first one was done intentionally with AUTOLEVEL ON

 

at the end im trying a right and left snaproll :D

 

could take a while to process....(its a 2,9 gb videofile , 60fps ,h.264, 50mbps)

 

https://youtu.be/XkBMRjRo9lc

 

 

I think it is still processing!

I get an error and it does not playback!

[Hutzlipuh]

 

I think it is still processing!

I get an error and it does not playback!

YT says around 8 more minutes to process.... be patient :D

 

Uploading is faster then processing for me

Edited October 15, 2016 by Hutzlipuh

[Crump]

lol.. will do.

[Crump]

 

 

Afaik, the HUD shows CAS, not TAS.

 

PERFECT agreement now with a Clmax of 1.17 at full take off weight (Focke Wulf Data).

 

Our FW190 stalls at 195 kph CAS or 121.167mph under the same load and conditions as Faber's FW-190A3 WNr 313 as flown by the RAE.  There is no PEC correction required but I did not apply a compressibility correction.  

[Hutzlipuh]

lol.. will do.

Its really hard not to loose some altitude trying this...if i pull too hard the speed loss per second will be higher or i will stall sooner....

[Crump]

 

 

Its really hard not to loose some altitude trying this...if i pull too hard the speed loss per second will be higher or i will stall sooner....

 

Yeah I saw that.  the altitude loss had the effect of lowering the stall speed ~5kph. 

[Crump]

I'm having technical problems (hardware) that I can't seem to figure out and so I can't fly so I'm out. Sorry.

 

The only things I have recorded right now are many hours of fights online on DED Normal Server. No use for controlled tests though unfortunately.

 

 

Yeah, trying to get to the bottom of this question see where we are at in the game and how it should line up with Focke Wulf data.

 

If get the chance and could help I would appreciate it.  I would like to build a PEC curve for future reference on the BoS FW-190 too.