ACOUSTIC ATTENUATION WITH ADAPTIVE IMPEDANCE
ACOUSTIC ATTENUATION WITH ADAPTIVE IMPEDANCE
- Neue Suche nach: BRADEN ROBERT L
- Neue Suche nach: KRUCKENBERG TERESA M
- Neue Suche nach: PUJAR VIJAY V
- Neue Suche nach: KWAN HWA-WAN
- Neue Suche nach: BRADEN ROBERT L
- Neue Suche nach: KRUCKENBERG TERESA M
- Neue Suche nach: PUJAR VIJAY V
- Neue Suche nach: KWAN HWA-WAN
An acoustic liner may include a core with a plurality of resonator chambers, a perforated top sheet coupled to the core, and a backskin coupled to the core. A thermoacoustic speaker including nanomaterials may be coupled to at least one of the core, the backskin, and the perforated top sheet. A voltage may be applied to the thermoacoustic speaker. The thermoacoustic carbon nanotube speaker may create a dynamic excitation within a resonator chamber in the core. The dynamic excitation may change the liner acoustic impedance to achieve optimum noise attenuation over a wide range of frequencies or engine operating conditions.
Dokumentinformationen
ACOUSTIC ATTENUATION WITH ADAPTIVE IMPEDANCE
2016-05-26
Patent
Elektronische Ressource
Englisch
| IPC: | F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler |