Aeroacoustics (FSI-OAA)

Academic year 2018/2019
Supervisor: prof. Ing. Karol Fiľakovský, CSc.  
Supervising institute: LÚ all courses guaranted by this institute
Teaching language: Czech
Aims of the course unit:
Students will gain basic knowledge on noise generation, possibilities of noise measurements and protection against noise.
Learning outcomes and competences:
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.
Course contents:
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.
Teaching methods and criteria:
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.
Controlled participation in lessons:
If students attend less then 10 of 13 lectures they have to prove they have completed missed lectures.
Type of course unit:
    Lecture  13 × 2 hrs. optionally                  
Course curriculum:
    Lecture 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
Literature - fundamental:
1. RNDr. Madejewsky: Aeroakustika, , 0
Literature - recommended:
1. Harris, C.M.: Handbook of Noise Control; Mc Graw Hill Book Comp.,New York 1957
The study programmes with the given course:
Programme Study form Branch Spec. Final classification   Course-unit credits     Obligation     Level     Year     Semester  
M2I-P full-time study M-STL Aircraft Design -- GCr 4 Compulsory-optional 2 2 W
M2I-P full-time study M-LPR Aeronautical Traffic -- GCr 4 Compulsory-optional 2 2 W