reported Su-33 gun/fixed net axis tilted 2 degrees

[AeriaGloria]

I was testing things recently and found some stuff at odds with the manual for the DCS Su-33. According to manual for both, in fixed net, the “x” should be where to aim missiles for Fi0 mode. However this “x” is 2 degrees above the actual center of the missile lock zone in Fi0. 
 

In addition, DCS MiG-29 and Su-27, which share many elements including Fi0 mode and fixed net alignment, have the missile axis/Fi0 lock zone centered on the fixed net “x,” and the gun aiming at boresight 2 degrees above at the center of the fixed net 

However in DCS Su-33, the fixed net is 2 degrees higher, with fixed net “x” not only 2 degrees above the Fi0 missile lock center, but the gun and fixed net boresight is 4 degrees above this missile lock zone. 
 

It seems the HUD artificial horizon is two degrees lowered in Su-33, and the gun shoots much higher in the HUD symbology. 
 

The missile axis in both DCS Su-27 and Su-33 is 2 degrees below the boresight/AOA=0 line, but only in Su-33 is the gun and boresight of the fixed net 2 degree above true aircraft reference line (AOA = 0). 
 

This can only be explained by the HUD Symbology not only being tilted either 2 degrees down or 2 degrees high depending on the mode, but the gun being tilted 2 degrees higher then DCS Su-27. 
 

As far as the manual and everything I have read about Su-33 the structure of the gun mounting should not be different (as well as looking visually identical), and the fixed net should have the “x” in the center of the Fi0 missile lock zone. 
 

Either the gun really is tilted 2 degrees up and fixed net with it, or there is some error with how these are lined up. I understand if this is intentional and not communicated in the manual, but I wanted to make sure it wasn’t a bug or an error and if there is any reason for it to be this way 

Here is a track, thank you 

missile-gun-axis-test.trk

Here is also 3 pictures of DCS MiG-29, Su-27, and Su-33 at low altitude and high speed over the ocean, with less then 1 degree AOA and level flight, while firing the gun with fixed net. You can easily see how the Su-33 fixed net is tilted 2 degrees higher along with the gun bullet trajectory, they are two big so here is a google drive link https://drive.google.com/drive/folders/10eVF7tHxP3hu8HEVrB05oqpiwoFLaMlu

2 minutes ago, AeriaGloria said:

I was testing things recently and found some stuff at odds with the manual for the DCS Su-33. According to manual for both, in fixed net, the “x” should be where to aim missiles for Fi0 mode. However this “x” is 2 degrees above the actual center of the missile lock zone in Fi0. 
 

In addition, DCS MiG-29 and Su-27, which share many elements including Fi0 mode and fixed net alignment, have the missile axis/Fi0 lock zone centered on the fixed net “x,” and the gun aiming at boresight 2 degrees above at the center of the fixed net 

However in DCS Su-33, the fixed net is 2 degrees higher, with fixed net “x” not only 2 degrees above the Fi0 missile lock center, but the gun and fixed net boresight is 4 degrees above this missile lock zone. 
 

It seems the HUD artificial horizon is two degrees lowered in Su-33, and the gun shoots much higher in the HUD symbology. 
 

The missile axis in both DCS Su-27 and Su-33 is 2 degrees below the boresight/AOA=0 line, but only in Su-33 is the gun and boresight of the fixed net 2 degree above true aircraft reference line (AOA = 0). 
 

This can only be explained by the HUD Symbology not only being tilted either 2 degrees down or 2 degrees high depending on the mode, but the gun being tilted 2 degrees higher then DCS Su-27. 
 

As far as the manual and everything I have read about Su-33 the structure of the gun mounting should not be different (as well as looking visually identical), and the fixed net should have the “x” in the center of the Fi0 missile lock zone. 
 

Either the gun really is tilted 2 degrees up and fixed net with it, or there is some error with how these are lined up. I understand if this is intentional and not communicated in the manual, but I wanted to make sure it wasn’t a bug or an error and if there is any reason for it to be this way 

Here is a track, thank you 

missile-gun-axis-test.trk

Here is also 3 pictures of DCS MiG-29, Su-27, and Su-33 at low altitude and high speed over the ocean, with less then 1 degree AOA and level flight, while firing the gun with fixed net. You can easily see how the Su-33 fixed net is tilted 2 degrees higher along with the gun bullet trajectory, they are two big so here is a google drive link https://drive.google.com/drive/folders/10eVF7tHxP3hu8HEVrB05oqpiwoFLaMlu

 

[AeriaGloria]

The reason for firing missiles in the track is to show via telemetry the alignment of the missile axis, which you can tell via even F10 is aligned 2 degrees below boresight in MiG-29/Su-27, but 4 degrees below fixed net/gun boresight in Su-33

I also found this LUA difference between Su-27 and Su-33, perhaps has something to do with it, and hopefully can help point to the “why” if it’s intended or not, the Su-27 LUA shows “0” for “elevation initial”, and Su-33 LUA shows “2” for “elevation initial.”

 

Edited December 8, 2024 by AeriaGloria

[f-18hornet]

Thank you, reported.