Final answer:
The 2 bar VASI is designed for aircraft with an eye to wheel height of up to 10 meters. It provides visual guidance to pilots during landing approach to ensure the correct glide path.
Step-by-step explanation:
The 2 bar Visual Approach Slope Indicator (VASI) is an airfield lighting facility that provides visual approach slope guidance to aircraft during approach for landing. The 2 bar VASI is typically designed for aircraft with an eye to wheel height of up to 10 meters. This system utilizes a series of light units arranged in bars to allow pilots to determine if their approach angle is too high, too low, or correct according to the optimal glide path for that specific runway.