Flight envelope protection is a safety feature in modern aircraft that helps prevent pilots from exceeding the aircraft's operational limits. The "flight envelope" refers to the range of speed, altitude, and maneuverability that an aircraft can safely operate within. By monitoring these parameters, flight envelope protection systems can automatically adjust control surfaces or limit engine power to keep the aircraft within safe boundaries. This technology is particularly important during critical phases of flight, such as takeoff and landing, where the risk of exceeding limits is higher. Systems like fly-by-wire and autopilot often incorporate flight envelope protection to enhance safety and reduce pilot workload, ensuring a smoother and safer flying experience.