Interesting alpha game with some potential
Some Possible improvements:
Proper mouse aim:I know that the mouse aim that is already implemented is experiential but it is god awful. The keyboard controls on their own just aren't good enough and need to be combined with mouse aim that is similar to War Thuner's KBM controls.
Original fighter system sounds: Everybody loves the good old growl sound of the aim 9 sidewinders lock tone. Just take a look into Falcon 4.0's sound files for the original system sounds of an F-16.
Missiles designed for particular purposes: I.E. SAM missiles shouldn't be able to lock onto ground targets as that is for AGM's
More realistic radar: I know that this is supposed to be an arcade game but it won't hurt to make the radar a little more realistic and unique. For example you could have the radar do a search Patten (with delay) 270 degrees ahead of the aircraft's nose cone to make it more challenging to find and lock onto targets. This could be combined with a Missile Approach Warning System to provide a 360 degree view of incoming missiles.
-those are just some of my thoughts to make the game more unique but off course you can do whatever the hell you want with your project. Keep up the good work.
Anyway onto how my system ran the game
**PC SPECS**
Processor: Intel Core i7-2600k (30% max usage)
Graphics: GTX 1060 MSI Gaming X 6G Edition (70%-100% usage)
Motherboard: Gigabyte GA-P67A-UD3-B3
Ram: 16GB DDR3
Power supply: AX860 860 watt 80 plus platinum Certified Fully Modular PSU
Software: Windows 10
Ran around 55-60 FPS on very high settings, 1080p