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F-35 Lightning II

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Re: F-35 Lightning II

Postby Gijs » Sat Jan 26, 2013 6:55 pm

Ok, I'll wait for that one then.
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Re: F-35 Lightning II

Postby StuartC » Sun Feb 24, 2013 3:50 pm

V0.4 available now:-

http://www.fguk.eu/fguk-hangar/military ... ghtning-ii


V0.4

For FG version 2.8 +. will not work correctly with earlier versions !!!

Rembrandt auto detection enabled.
Variable payload active.
new afterburner animation ( rembrandt compatable )

Minor FDM tweek re external tanks.
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Re: F-35 Lightning II

Postby Gijs » Sun Feb 24, 2013 4:15 pm

Is this the one that I should review for Git?
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Re: F-35 Lightning II

Postby StuartC » Sun Feb 24, 2013 9:26 pm

Pass. next question please. :D
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Re: F-35 Lightning II

Postby e-Tron » Mon Mar 25, 2013 6:27 pm

I was playing around with this aircraft and I wanted to try the JSBSim. I got a few errors. First in the F-35B-jsbsim.xml, under "aero/coefficient/CDft" the "0" in the 2nd row needs to be a value greater than 1. Then in the F-35B-jsbsim-set.xml there needs to be this:
Code: Select all
  <model>
   <pushback>
    <kp type="double">100</kp>
    <ki type="double">25</ki>
    <kd type="double">0</kd>
    <position-norm type="double">0</position-norm>
   </pushback>
   <path>Aircraft/F-35B/Models/F-35B.xml</path>
  </model>

and currently there is only this:
Code: Select all
  <model>
    <path>Aircraft/F-35B/Models/F-35B.xml</path>
  </model>


After fixing these along with a few instances in the Aircraft/Models/F-35B.xml where the "L" was not capitalised in the <path> Aircraft/F-35B/Models/Lights..., I was able to run the JSBSim. Hope this helps. Great work so far! I love the animations on the landing gear and all of the thrust vectoring mechanisms.
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Re: F-35 Lightning II

Postby StuartC » Mon Mar 25, 2013 8:14 pm

Thank. I have applied the changes and they will be included in its next update. although with the JSBsim stuff, Im not sure what I am doing though.
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Re: F-35 Lightning II

Postby F-GTUX » Wed Mar 27, 2013 9:29 pm

Thank you e-Tron, I wasn't aware that the order was relevant, that's why aero/coefficient/CDft was 0 all the time.
Changing
Code: Select all
            <tableData>
              1 0
              0 1
            </tableData>
into
Code: Select all
            <tableData>
              0 1
              1 0
            </tableData>
solves the problem, I've just checked it. Even better, and to be consistent with the animation, I suggest
Code: Select all
            <tableData>
              0.0 1
              0.5 1
              1.0 0
            </tableData>
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Re: F-35 Lightning II

Postby e-Tron » Thu Mar 28, 2013 5:39 pm

This JSBSim stuff is so hard. I'm having a tough time findind the resources I need to figure it all out. I came across these fixes but I dont understand what they are really changing in the sim. I guess the pushback was not getting initiated, but I don't know what the order of the numbers in the aero/coeff... changes. Just reading console output and digging up answers here on the forum
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Re: F-35 Lightning II

Postby Jetman. » Mon Apr 29, 2013 9:04 pm

I have managed to land the F-35 a few times on a carrier and later takeoff. I have noticed that the Lift Fan produces no lift; only the engine nozzle lifts the plane during attempted vertical hovers; thus, the plane has a tendency to flip forward and, therefore, can never hover.

Impossible to do a vertical landing, like this:
http://www.youtube.com/watch?v=1wOJ9JImlRs

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Re: F-35 Lightning II

Postby StuartC » Mon Apr 29, 2013 9:45 pm

Actually you can hover, but only in situations with less than 1/3 fuel capacity and no payload. Its cant do vertical takeoffs at all in a heavier configuration.
Also another factor is the Afterburner still kicks in and overpowering it from the rear. The FCS thats being built for it will prevent the Afterburver kicking in while in Vertical mode ( You still wont be able to do a Vertical takeoff or landing with more than 1/3 fuel though. It cant do it in real life ether. ).
Latest version has the Takeoff/landing data in the help file i think.
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Re: F-35 Lightning II

Postby e-Tron » Mon Apr 29, 2013 10:04 pm

I noticed my pilot in this, and a few other aircraft, which I think is pretty cool. I did model it after an F35 pilot. I've recently put more detail into the model and I figured I'd share it here incase you were interested in including it. I still need to do work on the textures, but it's certainly way better than before.

http://sourceforge.net/projects/boeingfaxx/files/Pilot/f35_Pilot.tar.gz/download

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Re: F-35 Lightning II

Postby StuartC » Mon Apr 29, 2013 10:07 pm

looks good. I inherited the pilot in an old model. I had no ide who made him.
I'll download the new one and have him in the next F-35 update.
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Re: F-35 Lightning II

Postby Jetman. » Mon Apr 29, 2013 10:08 pm

StuartC wrote in Mon Apr 29, 2013 9:45 pm:Actually you can hover, but only in situations with less than 1/3 fuel capacity and no payload. Its cant do vertical takeoffs at all in a heavier configuration.
Also another factor is the Afterburner still kicks in and overpowering it from the rear. The FCS thats being built for it will prevent the Afterburver kicking in while in Vertical mode ( You still wont be able to do a Vertical takeoff or landing with more than 1/3 fuel though. It cant do it in real life ether. ).
Latest version has the Takeoff/landing data in the help file i think.


Ahhh! I have never decreased my fuel load;I have had all 4 tanks full on fuel. I'll try that out, thanks!
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Re: F-35 Lightning II

Postby StuartC » Mon Apr 29, 2013 10:14 pm

Jetman. wrote in Mon Apr 29, 2013 10:08 pm:
StuartC wrote in Mon Apr 29, 2013 9:45 pm:Actually you can hover, but only in situations with less than 1/3 fuel capacity and no payload. Its cant do vertical takeoffs at all in a heavier configuration.
Also another factor is the Afterburner still kicks in and overpowering it from the rear. The FCS thats being built for it will prevent the Afterburver kicking in while in Vertical mode ( You still wont be able to do a Vertical takeoff or landing with more than 1/3 fuel though. It cant do it in real life ether. ).
Latest version has the Takeoff/landing data in the help file i think.


Ahhh! I have never decreased my fuel load;I have had all 4 tanks full on fuel. I'll try that out, thanks!


Just watch out for the Afterburner. If you let it kick in, your dead. When the FCS gets installed in a later release that wont be an issue.
Also, Pull back on the stick if your trying to take off vertical. This increases the output from the front of the aircraft. ( experiment to see how much stick you need )
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Re: F-35 Lightning II

Postby Jetman. » Tue Apr 30, 2013 5:17 pm

StuartC wrote in Mon Apr 29, 2013 10:14 pm:
Just watch out for the Afterburner. If you let it kick in, your dead. When the FCS gets installed in a later release that wont be an issue.
Also, Pull back on the stick if your trying to take off vertical. This increases the output from the front of the aircraft. ( experiment to see how much stick you need )


Thanks! The afterburner kicking is scary indeed haha! Looking forward to the FCS in the later release. Overall, I am enjoying the F-35 a lot. Good job. :)
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