SUPERSONIC FLIGHT NAVIGATION BASED ON POPULATION DENSITY

Flight control systems, flight control methods, and aircraft navigation systems and methods are provided. A method for estimating a sound level at a geographical location including determining, by an aircraft navigational processor, an initial navigational route, estimating, by the aircraft navigational processor, the sound level at the geographical location in response to a first sound pressure wave estimated to be generated by the aircraft at a first point along the initial navigational route and a second sound pressure wave generated by the aircraft at a second point along the initial navigational route, determining, by the aircraft navigational processor, an alternate navigational route in response to the sound level exceeding a noise limit at the geographical location, and displaying, by a user interface, the alternate navigational route and an alert indicative of the sound level exceeding the noise limit.