What term describes the condition of an aircraft becoming invisible to radar due to a specific speed creating a Doppler shift?

The term that describes the condition of an aircraft becoming invisible to radar due to a specific speed creating a Doppler shift is "Blind speed." This phenomenon occurs when the radar signal reflects off the aircraft in such a way that it falls within a particular range that the radar system cannot detect, making the aircraft essentially invisible to that radar system at certain speeds.

In radar technology, the Doppler effect can result in situations where objects moving at certain speeds create signals that either cancel each other out or shift to frequencies beyond the detection capabilities of the radar. When an aircraft reaches a certain velocity, it may experience this "Blind speed," which is a critical consideration in stealth technology and military aviation, as it offers tactical advantages during operations.

Other options, such as "Blind phase," "Tangential phase," and "Tangential speed," do not accurately capture the concept of the aircraft becoming undetectable due to Doppler effects related to specific speeds. Therefore, "Blind speed" is the precise terminology used in aerodynamics and radar technology to define this specific condition.