机载瞄准具为飞行员提供的瞄准视界,是歼击机的一项重要的战术技术指标。即使一架歼击机在其飞行高度、速度范围内的机动性能好,但瞄准视界很小,这就失去了很多有利的战机。诸如,在装备АСП—5Н瞄准具的歼击机上,当飞行员对外界可见目标进行瞄准攻击时,必须用瞄准光环跟踪目标。在正常的攻击条件 Airborne aiming for the pilot to provide aiming horizon, is an important fighter tactical technical indicators. Even if a fighter plane maneuvering well at its flight altitude and speed range, but targeting a very small field of vision, it lost a lot of favorable fighters. For example, on a fighter aircraft equipped with the АСП-5Н sight, the pilot must aim the aura to track the target while aiming the target at an outside target. Under normal attack conditions