It is 50% equipped with @Guyfolk's technology. Improving it's aerobatic performance, and better functionality.

More likely a beta version of the Strike Wyvern

About the X-02 Wyvern:

The X-02 Wyvern, also known as the X-02A, is a fifth-generation fighter aircraft developed by the Erusean Air and Space Administration. Its striking design is most notable for its variable geometry wings, which fold in at high speeds.

The X-02 is an iconic fictional aircraft in the Ace Combat series, debuting in Ace Combat 04: Shattered Skies and making various appearances since. Its last appearance in Ace Combat Infinity marked the X-02's first console appearance in nearly a decade.

Ace Combat 7: Skies Unknown introduced the X-02S Strike Wyvern as the first variant of the X-02.

Activation groups:

• 1: Arresting hook
• 2: Flaps
• 3: none
• 4: none
• 5: (Manually) Fold wings
• 6: (EML) Electromagnetic Railgun Launcher
• 7: Cockpit canopy
• 8: Aerobatic mode (560 km/h)
  

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PS:

• Yes, missiles are missing
• Suggested mid-high physics, because main Foldable wings are bending (parts are completely soft in low physics) on high-speeds (750 km/h - above). It's kinda annoying. Or simply activate the fold wing mode (Activate 5).
  

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Credits:

• @Husky12345's: main X-02 (base)
• @GuyFolk's: foldable wings, and railgun
  

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Enjoy!