Final answer:
The three terrain flight modes are Nap-of-the-earth (NOE), Contour, and Low-level flight. They are used by military pilots to evade detection and maneuver through different terrains while maintaining effectiveness and mission readiness.
Step-by-step explanation:
The three terrain flight modes used in military aviation are Nap-of-the-earth (NOE), Contour, and Low-level flight. These modes are employed to avoid detection and attack from enemy forces, as well as to navigate through complex environments.Nap-of-the-earth (NOE) involves flying at very low altitudes, following the contours of the earth, and using natural cover like trees and valleys to remain concealed. This mode is the most challenging and requires significant pilot skills to avoid obstacles.Contour flight mode is similar to NOE but at slightly higher altitudes, generally matching the height of the terrains' contours. This allows for somewhat faster speeds and less precise maneuvering compared to NOE.Low-level flight is conducted at a constant, level altitude, usually just a few hundred feet above the ground. This reduces the likelihood of being spotted by enemy radar but is less effective at avoiding visual detection compared to NOE or Contour flight.Conclusion Each of these flight modes has its advantages and is selected based on mission requirements, threat levels, and terrain. Pilots must be highly trained to execute these demanding flight techniques effectively.