Course detail

Aeroacoustics

FSI-OAAAcad. year: 2020/2021

Basic description of acoustic waves in gases, decibel scale, levels of acoustic pressure, intensity and power, acoustics spectrum. Human ear and mechanism of hearing. Normalisation and hygienic requirements for noise levels. Noise level produced by boundary layer and high speed jet. Noise level produced by aircraft, noise of jet engine, propeller and supersonic bang. Noise insulations and dumpers, dumpers of vibrations.

Language of instruction

Czech

Number of ECTS credits

4

Mode of study

Not applicable.

Guarantor

prof. Ing. Karol Fiľakovský, CSc.

Department

Institute of Aerospace Engineering (LÚ)

Learning outcomes of the course unit

Students will gain basic knowledge on noise and its effect on human body and calculation of noise characteristics and noise level.

Prerequisites

Basic knowledge of mathematics, differential and integral calculus, ordinary and partial differential equations. Basics of physics and mechanics, acoustics recomended but not limited condition.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

The course is taught through lectures explaining the basic principles and theory of the discipline.

Assesment methods and criteria linked to learning outcomes

Participation in lectures is obligatory. Awarding a graded course-unit credit is conditioned by the attendance at lectures, at least 10 of 13. The graded course unit credit is given on the basis of the test of 6 questions.

Course curriculum

Not applicable.

Work placements

Not applicable.

Aims

Students will gain basic knowledge on noise generation, possibilities of noise measurements and protection against noise.

Specification of controlled education, way of implementation and compensation for absences

If students attend less then 10 of 13 lectures they have to prove they have completed missed lectures.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

RNDr. Madejewsky: Aeroakustika, , 0

Recommended reading

Harris, C.M.: Handbook of Noise Control; Mc Graw Hill Book Comp.,New York 1957

Classification of course in study plans

  • Programme M2I-P Master's

    branch M-LPR , 2 year of study, winter semester, compulsory-optional
    branch M-STL , 2 year of study, winter semester, compulsory-optional

Type of course unit

 

Lecture

26 hod., optionally

Teacher / Lecturer

prof. Ing. Karol Fiľakovský, CSc.

Syllabus

Acoustic waves, speed of sound in gases
Decibel scale, levels of acoustic pressure, intensity and power
Possible spectra of sound and their levels, absorption of noise, influence of weather
conditions
Vibration and noise, human ear and mechanism of hearing
Noise regulation requirements
Sources of noise of zero and first order
Aerodynamic noise
Noise of boundary layers
Noise of subsonic jets
Aerodynamic supersonic shock
Noise of aircraft propellers
Insulation against noise
Silencers of noise and vibrations