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Noise of propeller aircraft
This paper first reminds briefly the gradual development to contemporary understanding the physical bases and predicting the noise of propellers and propeller developmentin propeller propulsion and noise a...
BI - Akustika a kmity
- 2011 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Influence of Noise Reduction on the Propeller Performance
Noise reduction of propellers is considered as a very important issue in aviation. Principal means for the noise reduction are decrease in blade tip Mach number for the aerodynamic design of propeller is used for t...
JU - Aeronautika, aerodynamika, letadla
- 2014 •
- O
Rok uplatnění
O - Ostatní výsledky
Prototype of the V534 hydraulic constant-speed propeller of the open concept
Prototype of hydraulic constant-speed propeller of the open concept. Aircraft noise emissions are minimised by optimum take-off trajectory which is available by this concept of propeller only. Propeller blade and a...
JU - Aeronautika, aerodynamika, letadla
- 1998 •
- X
Rok uplatnění
X - Nezařazeno
Spectral decomposition use in noise abatement of propeller airplanes
Spectral decomposition makes it possible to separate the propeller noise components from the overall noise of the propeller driven aircraft. In this way it is possible to increase, but also to speed up the diagnost...
JU - Aeronautika, aerodynamika, letadla
- 2008 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Program SPAD and its Use in Noise Abatement of Propeller Driven Airplanes.
analysis of the noise of propeller driven airplanes. The program works on the principle periodic noise components produced by the propeller ( or propellers ) and the restnoise, without the propeller
JU - Aeronautika, aerodynamika, letadla
- 2006 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Program SPAD for fast analysis of the noise of propeller driven airplanes
analysis of the noise of propeller driven airplanes. The program works on the principle periodic noise components produced by the propeller ( or propellers ) and the restnoise, without the propeller
JU - Aeronautika, aerodynamika, letadla
- 2006 •
- X
Rok uplatnění
X - Nezařazeno
Program SPAD for analysis of the noise of propeller aircraft, version 0.8
The program works on the principle of spectral decomposition. It separates the propeller noise components from the overall noise of propeller aircraft, and speeds-up considerably the diagnostic analysis of the ...
JU - Aeronautika, aerodynamika, letadla
- 2008 •
- R
Rok uplatnění
R - Software
Program SPAD for spectral decomposition and continuous analysis of the noise of turbo propeller aircraft, version 0.7
The program identifies the propeller noise components in the noise of turbo propeller aircraft, and using the method of spectral decomposition it separates them, and continuously evaluates their levels, and share i...
JU - Aeronautika, aerodynamika, letadla
- 2007 •
- X
Rok uplatnění
X - Nezařazeno
NOISE OF PROPELLER AIRCRAFT ? MEASURING AND EVALUATION
of propeller aircraft and the potentials in advanced measuring and analytical methods at aircraft noise abatement. Some of the ICAO noise certification procedures which apply to propeller airplanes are commented a...
JB - Senzory, čidla, měření a regulace
- 2012 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Measurement of noise and its correlation to performance and geometry of small aircraft propellers
A set of small model and UAV propellers is measured both in terms of aerodynamic performance and acoustic noise under static conditions. Apart from obvious correlation of noise to tip speed and propeller diameter t...
BK - Mechanika tekutin
- 2016 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
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