Parts & Vessels Panther Engine Animations are not Working Correctly. (Throttle not changing the nozzle, Cruise/Afterburner nozzle shapes are swapped and others...)

[Anth]

Reported Version: v0.1.3.2 (latest) | Mods: none | Can replicate without mods? Yes 
OS: Windows 10 | CPU: Intel i9 9900K | GPU: Nvidia 3070ti | RAM: 32GB

Real Life:

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F16 Ground Testing:
https://www.youtube.com/watch?v=tdczvix3EiE&t=27s

Note for the following times what is happening:
0:27                  The engines are firing and it isn't using the afterburners. There is no visible evidence of heat at this point.
0:27 to 0:32 The nozzle is opening a bit
0:33                  The nozzle is opening and the afterburners are engaging
0:39-0:43      It appears that the throttle is adjusted for a moment and the nozzle are closing and opening a bit.

The nozzles do other things later on in the video but I think that was because of testing purposes.
Don't quote me on it but I don't think that would happen in real flight.

F16 When not Using Afterburners in flight:
https://www.youtube.com/watch?v=34Sa0vzmBfs&t=155s

2:35 to 2:46 Note that the nozzles are much more closed when afterburners aren't being used while the plane is in flight.
 

Kerbal Space Program 1:

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https://www.youtube.com/watch?v=kSDfNumRRCk&t=4s

0:06                  Good. The nozzles open up when the afterburner is firing.
                             Bad. Opened up way too far too fast.
0:12 to 0:23 Good. Throttling up and down causes the nozzles to close and open.

Craft File:
Aeris3APanther.craft

Kerbal Space Program 2 (0.1.2.0-0.1.3.2):

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https://youtu.be/S38jJo9jTmY

Note the following:

• That the nozzles are open when the afterburners aren't being used.
• There is some sort of fire coming out the back when the afterburners aren't being used.
• When afterburner mode is engaged the fire that shouldn't be there stops as the nozzle closes.
• When the nozzle closes the afterburners are engaged.

Important Information:
Nothing here is realistic.

Craft File:
Stock04_JetPanthFix.json

Based on the real life video evidence the following should be happening:

• When the afterburners aren't being used there is no visible heat coming out the back.
• When the afterburners aren't being used the nozzle should be much more closed.
• When using the afterburners, the nozzles should be opening and closing according to the throttle to some degree.
• The level of how the nozzles are being used should be strictly linked to the afterburner heat effects  like the first video of the F16 shown and shouldn't open up like KSP1 does.

Conclusion:
KSP2 is doing this completely wrong.
KSP2 should be more like KSP1 except that the nozzles need to open in a slower more controlled restricted fashion like they do in real life.

Additional Information:
0.1.1.0 was doing this wrong as well but in different way.

Credit:
@Sciencedude37 Brought this to my attention and instructed me on how afterburners actually work.

 

Related bug report:

For the swap between cruise and afterburner, it seems the colliders are the correct way (where the animations aren't):

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Edited February 26, 2024 by Spicat
Changed the title and added link to related report

[Noobyeeter69]

Reported Version: v0.2.1 (latest) | Mods: none | Can replicate without mods? Yes 
OS: Windows 10 pro | CPU: Ryzen 7 3700X | GPU: RTX 3060 | RAM: 4GB*4

 

In afterburner mode the nozzle should be wide open and while in cruise the opposite.

bug, images: https://imgur.com/a/2TR2627

reference: https://imgur.com/a/pCAoT0q

Edited February 26, 2024 by DibzNr

[Sir Eskomaz]

I agree with this and hope it gets the attention of the devs it needs

[Sea_Kerman]

Odd, they seem to work ok for me
https://youtu.be/zJwiyDwzYX8

[Spicat]

  On 7/16/2023 at 11:13 AM, Sea_Kerman said:

Odd, they seem to work ok for me
https://youtu.be/zJwiyDwzYX8

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This is from before the first patch, are they working now? Maybe it’s a regression

[Sea_Kerman]

Haven’t tested current patch

[Sciencedude37]

  On 7/16/2023 at 11:13 AM, Sea_Kerman said:

Odd, they seem to work ok for me
https://youtu.be/zJwiyDwzYX8

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this is in patch v0.1.0.0 it seems. They used to work for me too and they also worked in v0.1.1.0 but in later patches the animation for both cruise and afterburner mode is stuck

[Anth]

  On 7/16/2023 at 11:13 AM, Sea_Kerman said:

Odd, they seem to work ok for me
https://youtu.be/zJwiyDwzYX8

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I changed the title to cover the entire animation of the panther.
Can you give me some feedback?
Analyzing your video:
To me the following doesn't seem right:
0-10 seconds:     There is fire coming out the back
                                    The nozzles are open
11-14 seconds:  The fire coming out the back ceases instantly and then,
                                    The nozzles narrow
                                    After the afterburners fire the nozzles casually open to full

                                  
 

Edited July 16, 2023 by Anth12

[Sea_Kerman]

Yeah the nozzle narrowing doesn’t seem right

[DibzNr]

@AnthUnarchived this report

@Noobyeeter69 Merged your report with this post