National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Dependence of signal strangth on the radial distance and different types of magnets
Procházka, Pavel ; Voronova, Evgeniya ; Maturkanič, Dušan
The paper describes dependence of signal strength on the radial distance between the sensor and the measured object and dependence of signal strength on the different types of magnets. The measurements were performed in the laboratory of the rotational laser vibrometry originated at the Institute of Thermomechanics AS CR, v.v.i.
The Effect of Angle of Attack on a Blade Cascade with Overlap
Procházka, Pavel P. ; Uruba, Václav ; Pešek, Luděk
This experimental study was carried out to study an aeroelastic coupling in the case of a blade cascade with overlap exposed to tunnel freestream of different angle of attack (AoA). Three of five blades were constructed to allow vertical position changing by the effect of three shakers. Particle Image Velocimetry was used to measure averaged velocity and dynamical parameters of the flow. Mainly, the effect of AoA will be discussed as well as the influence of blade enlargement and Re number. The influence of potential endplates will be indicated.
Applicability of the deterministic methods in blade tip-timing analyses
Maturkanič, Dušan ; Procházka, Pavel ; Hodboď, Robert ; Tchawou Tchuisseu, Eder Batista
The paper describes the possible use of the deterministic methods for analyses of blade vibration. In this respect, the main attention is focused on turbine rotor speed instabilities which could cause inaccuracy of results. The initial method and approach were presented in previous works. The measurements were performed in the Laboratory of the rotational laser vibrometry in the Institute of Thermomechanics, Academy of Sciences of the Czech Republic.

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