Sub-scale sonic boom modeling

Details Sub-scale sonic boom modeling Sub-scale sonic boom modeling

2008-01-18

2009-12-22

McCall, Eric S (Department: 2855)

Measuring and testing

Wind tunnel: aerodynamic wing and propeller study

Reexamination Certificate

active

07634941

ABSTRACT:
A method for modeling the acoustic signature produced by an aircraft of interest flying at a particular supersonic Mach number/altitude operating point of interest. The method includes 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 altitude at which the sub-scale aircraft is operated is selected such that peak overpressure generated by the 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.

REFERENCES:
patent: 6698684 (2004-03-01), Henne et al.
patent: 6854687 (2005-02-01), Morgenstern et al.
patent: 6905091 (2005-06-01), Berson et al.
patent: 7252263 (2007-08-01), Hagemeister et al.
patent: 2005/0098681 (2005-05-01), Berson et al.

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