Passage: The NR-30 was a single-barrel, short recoil operated cannon, essentially an enlarged version of the 23 mm NR-23 weapon introduced in 1949. It fired a massive projectile (more than twice the weight of the NR-23's 23 mm shell), requiring a muzzle brake with an integrated flame damper to prevent airframe damage from its firing. Before this gun, the Soviet standard fighter armament was two 23 mm and one 37 mm gun, that were ballistically quite different. The 23 mm was quite powerful, but with a relatively low initial velocity, while the 37 mm was lacking in rate of fire and ammunition reserve.

Question: What kind of brake it require?
a muzzle brake