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Structural-Acoustic Analysis of Air Duct Using FEM
and ultimately it can lead to a fatigue failure of air inlet duct. In this study structural-acoustic analysis of the aircraft duct is presented. The acoustic pressure field of the analytical equations. A structura...
Applied mechanics
- 2017 •
- D
Rok uplatnění
D - Stať ve sborníku
Visualization methods
The acoustic duct is in majority cases well accessible for physical examination and imaging methods are not necessary. However in case of a tumour, an irritation or anomalies the imaging methods could play the main role in evaluatio...
FF - ORL, oftalmologie, stomatologie
- 2007 •
- C
Rok uplatnění
C - Kapitola v odborné knize
Two-channel ANC in Experimental Duct
Paper describes practical realiyation of two-channel ANc in a duct...
BI - Akustika a kmity
- 2001 •
- D
Rok uplatnění
D - Stať ve sborníku
A review of approaches to the air duct fatigue life certifications under acoustic loading.
The report presents conclusions from literature retrieval regarding to the airworthiness methodology applicable to the air intake duct from composite. A simple experimental facility set-up for acoustic loading which is comparable wi...
Aerospace engineering
- 2015 •
- O •
- Link
Rok uplatnění
O - Ostatní výsledky
Výsledek na webu
Noise Generated from Ducts Rectangular Cross-section
cross-section ducts manufactured of relatively thin sheet metal. The noise generated from duct systems surfaces, where the high level of acoustic pressure is caused firstof allby the high acoustic output of fans, ...
JE - Nejaderná energetika, spotřeba a užití energie
- 2008 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
DUCT
The Duct program was designed for the fan noise propagation in duct simulation of the inlet area of cylindrical or rectangular duct to an arbitrary point inside the duct.The program is also able to determine acoustic
JU - Aeronautika, aerodynamika, letadla
- 2015 •
- R •
- Link
Rok uplatnění
R - Software
Výsledek na webu
Application of Multi-channel Feed-forward Active Control in a Duct
The paper deals with the active attenuation of fan noise in a duct using two-channel feed-forward algorithm.
BI - Akustika a kmity
- 2001 •
- D
Rok uplatnění
D - Stať ve sborníku
Report of fatigue full-scale test
The report presents a history of the composite inlet air duct of the L-39NG airplane under acoustic loading. The results of measurements collected during the second half year 2018 are described and represent behaviour of structure u...
Aerospace engineering
- 2018 •
- O •
- Link
Rok uplatnění
O - Ostatní výsledky
Výsledek na webu
Acoustic plane waves in a gas-filled duct with an axial temperature gradient
Description and analysis of acoustic waves in ducts with a temperature gradient is induced by the need of understanding how temperature fields affect acoustic processes interactions between the acoustic and tempera...
BI - Akustika a kmity
- 2014 •
- D
Rok uplatnění
D - Stať ve sborníku
Noise Generated from Ducts
There are numerous reasons for problems with noise to occur in heating and air-handling equipment. One of them is a high acoustic pressure level inside ducts or pipes combustion in burning equipment. The surface of ducts or...
JE - Nejaderná energetika, spotřeba a užití energie
- 2007 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
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