Scipediacontent at 16:36, 17 February 2021

2021-02-17T16:36:52Z

Scipediacontent: Scipediacontent moved page Draft Content 709938979 to Misol Algermissen 2020a

2021-02-16T08:24:55Z

Scipediacontent moved page Draft Content 709938979 to Misol Algermissen 2020a

Scipediacontent: Created page with " == Abstract == Advanced concepts for aero-structures with multifunctional capabilities are investigated within the EU-project ACASIAS. In work package 3 of ACASIAS, componen..."

2021-02-16T08:24:51Z

Created page with " == Abstract == Advanced concepts for aero-structures with multifunctional capabilities are investigated within the EU-project ACASIAS. In work package 3 of ACASIAS, componen..."

New page

== Abstract ==

Advanced concepts for aero-structures with multifunctional capabilities are investigated within the EU-project ACASIAS. In work package 3 of ACASIAS, components of an
active noise reduction system are structurally integrated into a curved sandwich panel by means
of 3D printed inserts. This so-called smart lining is intended for application in aircraft as a
modular and lightweight interior noise treatment in propeller-driven aircraft. The broad application scenario of smart linings ranges from retro-fitting of current regional aircraft such as
ATR 42, ATR 72, DHC-8 Q400 to the application in new short-range aircraft with energy efficient counter rotating open rotor (CROR) engines or with distributed electric propellers. A
key feature of the smart lining with integrated active components is its modularity, facilitating
a flexible application in the aircraft cabin. This requires a fully self-contained sensing mechanism based on structurally integrated accelerometers. Using the normal surface vibration data
from the integrated sensors, the smart lining is able to predict the sound field in front of it. The
so-called virtual microphone method with remote sensors and observer filter allows to get rid
of real microphones and wiring in the aircraft cabin. This makes retro-fitting easier because it
reduces wiring effort and costs which is beneficial for future aircraft as well. However, the use
of virtual instead of real microphones might deteriorate the performance or even the stability of
the active noise reduction system because it relies on accurate plant models. Laboratory experiments in a sound transmission loss facility are conducted to assess the behavior of the smart
lining with virtual microphones and compare it to a smart lining with real microphones. The
sensitivity of the smart lining to environmental changes and the noise reduction performance
and control system stability are investigated in this study.

== Full document ==
<pdf>Media:Draft_Content_709938979-P_IDC5_39-7521-document.pdf</pdf>

== References ==

[1] S. J. Elliott, P. A. Nelson, I. M. Stothers, and C. C. Boucher, “In-flight experiments on the active control of propeller-induced cabin noise,” ''Journal of Sound and Vibration'', vol. 140, no. 2, pp. 219–238, 1990.

[2] C. R. Fuller and J. D. Jones, “Experiments on reduction of propeller induced interior noise by active control of cylinder vibration,” ''Journal of Sound and Vibration'', vol. 112, no. 2, pp. 389–395, Jan. 1987.

[3] K. H. Lyle and R. J. Silcox, “A study of active trim panels for interior noise reduction in an aircraft fuselage,” in ''SAE Technical Paper''. SAE International, 05 1995. [Online]. Available: [https://doi.org/10.4271/951179 https://doi.org/10.4271/951179]

[4] M. Misol, S. Algermissen, M. Rose, and H. P. Monner, “Aircraft lining panels with low-cost hardware for active noise reduction,” in ''Joint ConferenceACOUSTICS 2018'', 2018. [Online]. Available: [https://elib.dlr.de/122049/ https://elib.dlr.de/122049/]

[5] M. Misol, “Full-scale experiments on the reduction of propeller-induced aircraft interior noise with active trim panels,” ''Applied Acoustics'', vol. 159, p. 107086, 2020. [Online]. Available: [https://elib.dlr.de/129910/ https://elib.dlr.de/129910/]

[6] A. Roure and A. Albarrazin, “The remote microphone technique for active noise control,” in ''PROCEEDINGS OF ACTIVE 99: THE INTERNATIONAL SYMPOSIUM ON ACTIVE CONTROL OF SOUND AND VIBRATION, VOLS 1 & 2'', 1999, pp. 1233–1244.

[7] J. Cheer and S. Daley, “Active structural acoustic control using the remote sensor method,” ''Journal of Physics: Conference Series'', vol. 744, no. 1, 2016.

[8] S. Algermissen and M. Misol, “Experimental Analysis of the ACASIAS Active Lining Panel,” in ''Proc. of European Conference on Multifunctional Structures (EMuS)'', X. Martinez and H. Schippers, Eds., 2020, online event, November 17–18.

[9] M. Misol, “Active Sidewall Panels with Virtual Microphones for Aircraft Interior Noise Reduction,” ''Applied Sciences'', vol. 10, no. 6828, pp. 1–13, 2020. [Online]. Available: [https://elib.dlr.de/136353/ https://elib.dlr.de/136353/]

[10] S. J. Elliott, ''Signal Processing for Active Control''. London: Academic Press, 2001.

@@ Line 20: / Line 20: @@
 == Full document ==
-<pdf>Media:Draft_Content_709938979-P_IDC5_39-7521-document.pdf</pdf>
+<pdf>Media:Misol_Algermissen_2020a_5038_P_IDC5_39.pdf</pdf>
-−
 == References ==

← Older revision	Revision as of 08:24, 16 February 2021
(No difference)

Misol Algermissen 2020a - Revision history

Scipediacontent at 16:36, 17 February 2021

Scipediacontent: Scipediacontent moved page Draft Content 709938979 to Misol Algermissen 2020a

Scipediacontent: Created page with " == Abstract == Advanced concepts for aero-structures with multifunctional capabilities are investigated within the EU-project ACASIAS. In work package 3 of ACASIAS, componen..."