OVERVIEW: 35mm/90 ammunition used in the Type-90 Twin Anti-Aircraft Artillery (AAA) system is designed for short-range air defense and ground support roles. It delivers high-explosive and armor-piercing fire with rapid twin-barrel firing capability, targeting low-flying aircraft, helicopters, drones, and light ground threats.

DETAILS: Based on systems like the Swiss Oerlikon GDF series. These rounds achieve high muzzle velocities (~1,050–1,200 m/s) and are effective at engaging fast-moving aerial threats as well as light vehicles and infantry. Twin-barrel configurations allow for a high rate of fire, making the system effective in layered air defense networks.

ROLE SUMMARY:
Category: Anti-Aircraft Autocannon Ammunition
Primary Use: Anti-aircraft / Anti-personnel / Light armor
Function: High-velocity air defense and close-range suppression
Strong Against: Low-flying aircraft, helicopters, drones, infantry, light vehicles
Weak Against: Main battle tanks, high-altitude aircraft, hardened structures
Platform: Type-90 Twin AAA and similar 35mm dual-barrel air defense systems
Integration: Compatible with 35×90 mm twin-barrel autocannon platforms

SOURCE:
Wikipedia.org