Patent ID: 7634941
Filing Date: 2009-12-22
Classification: G01M

Abstract:
1. A method for evaluating the acoustic signature produced by an aircraft of interest flying at a particular supersonic Mach number/altitude operating point of interest, the method comprising: operating a sub-scale aircraft that is a sub-scale version of the aircraft of interest at a supersonic Mach number and at an altitude that are respectively different from the Mach number and the altitude associated with the operating point of interest, the Mach number and the altitude at which said sub-scale aircraft is operated being selected such that peak overpressure generated by said sub-scale aircraft and time to rise to peak overpressure are the same as peak overpressure and time to rise to peak overpressure caused by operating the aircraft of interest at the operating point of interest; and evaluating the acoustic signature produced by the sub-scale aircraft.