The Appelsians of Appelse Beta 32 in the Neinverse never suffered a cataclysmic world event that knocked them into a tidally-locked orbit around their system's sun, so half of their world has never been bleached by searing sun 24-7. They're just regular humanoid "people" still out to defeat and decimate their nearest world neighbour, the 85s, who are also still just non-mutated warring people. The Low Orbit Interceptor is designed to take the fight into Low Planetary Orbit and attack ships that are trying to get down to the planet unwelcomed and unwanted. It has the thicker hull and increased shielding to take more heat and damage to be able to withstand those increased pressures.