One hall was a bit of recruitment for the local airforce, showing how they'd like their future air defenses to look like (although it was kind of shown as if it were their current capabilities):
shooting balastic missiles with a bit laser from an AWACS like plane, nice but we're not quite there yet ;)
The museum had a nice section explaining how flight works, and they had this nice demo of drag, showing how the middle widget rotated longer thanks to the pointy bits that reduce drag:
The top floor was about space and had multiple theater show, albeit all in Korean. The 5D 360 degree screen one was still fun to watch (but content was kid oriented):
Otherwise, while it wasn't a a huge collection of planes, they had a decent one, especially considering the location:
very short takeoff and landing plane
A37-B
F-4E
