Improved climb capability mod

[autogyro 18]

Hi all,

 

If you want an improved climb capability, use my attached aircraft.cfg file.

 

As I posted in another thread,

 

FSX, as some of you know, has incorrect IAP use when calculating thrust at altitude. Inverse Air Pressure Ratio is used, instead of Inverse Air Density Ratio (the way FSX/P3D calculate thrust vs altitude).

 

To cut a long story short, if the max CN2% is kept at, say, 100% N2 vs altitude in the coding for all altitudes, the actual thrust you'll generate in the game is about 70% of what those engines would really generate at about 40,000 ft.

 

For this reason I've used a thrust scalar of 1.3 - so at altitude you should generate about real world thrust. Of course this means at sea level you'd expect to generate 130% of the real world thrust. It means you should takeoff with 94% N1 as your maximum instead of 99% N1.

 

Until Carenado corrects the FDE, this is an easy workaround to get near reasonable climb performance, provided you don't 'game' the system by using full throttle (as I said, keep a max of 94% N1 when taking off and you should be able to leave the throttles alone until you reach cruise altitude).

 

https://drive.google.com/file/d/0Bz_9RuK6jIkhblZJTC1rUHNWdWc/view?usp=sharing

 

 

 

[CFIJose 5,485]

Thank you!!!!!

[Airshane14 0]

In regards to this cfg file, what are you recommendations for replacing the existing.  I downloaded your file and tried to drag it into the area to replace the current aircraft.cfg, however it did not work.  I know Carendado will probably release a fix for this, however I am wanting to get this fixed so that I can actually take off like this jet is intended to without stalling. 

 

Thanks.

Shane

[davenicoll 104]

Shane,

 

Back up your existing aircraft.cfg file and then copy and paste autogyros fix...

 

Remember...any repaints you have added will need to be put back in...Only the entry in the CFG file.

 

Dave

[autogyro 18]

Hi airshane, you just need to overwrite your original aircraft.cfg. Always make a backup.

 

I posted it up as a file but you can make the changes yourself simply enough. Look for the thrust_scaler line and change it to 1.3.

 

(I've also corrected fuel flow slightly and the turning radius but that isn't necessary)

[Airshane14 0]

Thanks to you both!

[aerostar 42]

Thanks for this.... just thinking, with the explaination of the inherent fault in FSX ... would it be possible for Dovetail and LM to correct this in their versions of FSX... or even for one of the experts in here to fix.

 

aero

[autogyro 18]

It's something hardcoded. It could be fixed if it's within the licensing arrangements of LM or Dovetail Games and if they want to fix it.

 

Battery modelling, fuel modelling, turboprop modelling and IAP are all things that are broken by default.

 

Having said that, without fixing the inherent issue, the better workaround than just adjusting the thrust scaler is that in the air file, thrust at altitude should be say 1.3 times the sea level thrust. Problem that introduces is that it'll screw up your CN2% display which then needs xml coding to remove this visually on the gauge for a given altitude.

[aerostar 42]

Thanks autogyro...   so, if someone were to alter the air file and correct the code via XML to show correct gauge readings ...  could that then be easily applied to any of your jets in your hangar ?

 

That would be good to have all your jets flying more accurately....

 

aero

[autogyro 18]

Thanks autogyro... so, if someone were to alter the air file and correct the code via XML to show correct gauge readings ... could that then be easily applied to any of your jets in your hangar ?

 

That would be good to have all your jets flying more accurately....

 

aero

Pretty much yes, but it needs to be done on a case by case basis, as each plane has its own set of parameters.

 

I'd love to see what Carenado did to fix the thrust issues on the Citation II as that had the same anaemic climb performance on release, probably because of this same issue.

[aerostar 42]

...with the S550,  I installed the ISG gauges in conjunction with JanekBin's MODs.

and it's much better. 

 

Is there a Proline 21 package available, 3rd party, that is better and nav updateable

that can be swopped out with the Hawker's ?

I've got a feeling that the patch that Carenado are bringing out won't go far in

addressing the bugs with their system.

 

.....or if I bought another aircraft with a similar  Proline 21 and autopilot FLC mode

system could I swop that out with Carenado's...

 

......I'm thinking that others might be considering this as well.

 

aero

[WarpD 824]

The only other Pro Line 21 that's close to release is the MilViz King Air 350i.  It's Pro Line 21 is not compatible since it's a turbo prop version.

 

Each airframe has it's own unique Pro Line 21 Avionics Suite.  They really don't cross over very well at all.

[JB3DG 225]

The only other Pro Line 21 that's close to release is the MilViz King Air 350i.  It's Pro Line 21 is not compatible since it's a turbo prop version.

 

Each airframe has it's own unique Pro Line 21 Avionics Suite.  They really don't cross over very well at all.

 

This. Unlike Garmin, Rockwell Collins avionics aren't generic.

[JRBarrett 3,070]

The only other Pro Line 21 that's close to release is the MilViz King Air 350i. It's Pro Line 21 is not compatible since it's a turbo prop version.

 

Each airframe has it's own unique Pro Line 21 Avionics Suite. They really don't cross over very well at all.

Exactly so. Every PL-21 system is unique to its individual aircraft model, and many of the menu options on the FMS CDU (especially the PERF pages) will be aircraft-specific, as well as the particular cockpit "switchology" used to activate or deactivate V speeds, bearing pointers, nav source etc.

 

Having flown the Carenado Hawker a bit more, it's seems pretty obvious they are simply leveraging the default FSX GPS 500 to provide the display of flight plan waypoints etc.... thus the presence of lakes, rivers and shorelines etc on the PFD and MFD, and the lack of any meaningful VNAV functions.

[aerostar 42]

...oohh well...   looks like we're dependent on Carenado .  Wonder if there's a way to fix another  - BUGbear - of mine...

 

How to save a flight with the settings remaining the same.   In other aircraft this can be done, including popup

window sizes as well as switches and flightplans...   means there must be a  - temp - file / folder created

somewhere.  If this could be saved and reloaded ?  

 

It's frustrating when potentially really good aircraft are let down by the systems programming...

 

At least it looks like Flight 1 may be bringing the Cessna Mustang to P3D and Steam...  a bizjet thats well modelled and fun to fly...  can't wait.

 

aero