Name
Sokolenko Oksana Nikolaevna
Scholastic degree
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Academic rank
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Honorary rank
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Organization, job position
Kerch state maritime technological university
Web site url
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Articles count: 2
The main reason of the developmental delay of the RF
livestock sector below the level of its inherent
potential capacity is a detrimental alteration in
methodological procedure of livestock and poultry
management, occurring due to shortage of traditional
feeds. As a result, a necessity to develop the yearlong
production of additional fodders, allowing for balanced
feeding throughout the year, arose. The method of
hydroponic green fodder (HGF) cultivation meets
these requirements. Analysis of HGF production
methods and labor saver mechanisms makes possible
to claim that existing systems are characterized by
high costs and difficulties in fabrication, and require a
number of additional mechanical devices to work. In
the FSBEI HE “KSMTU”, a one-tier hydroponic
system has been developed, fitted with curved (arched)
guideways and rigid elastic load-carrying components,
where loading of seeds and takeout of grown HGF
occur by gravity without additional devices of labour
input. Based on analysis performed on design features
of the proposed system, it has been established that
emergence of parametric resonances in the system
under consideration is possible; and the study of tray
dynamical stability has been carried out with the aim
to prevent them. The motion of the hydroponic system
tray under consideration is described by the classical
Mathieu equation, including two parameters a and q.
The further studies of sets of stable and unstable
solutions in the plane of a and q parameters are
presented by the Ince-Strutt diagram. As a result of the
performed calculations, the diameter of the loadcarrying
component was identified (d=5 mm), which should ensure reliable working capacity and stability
of the hydroponic system in whole
The low rate of planting and harvesting mechanization is a common drawback of the equipment for hydroponic green fodder (HGF) cultivation. The system, that has been developed, is represented by a rack construction with a tray positioned on each rack; a tray is the place where the processes of seed dispersal and growth and the takeout of grown HGF occur. A tray with a pipe sways in opposite directions over pipe axis, and, as a result, moving bulk of seeds covers the entire tray surface with a seed layer of uniform thickness. The mathematical model of dynamics in the “granular medium – tray” system has been developed; on the basis of this model, after execution of simulation modeling, practical angles of tray tilt were identified as being within the range of 20 – 30 degrees. Experimental investigations have been carried out on the barley of “Vakula” cultivar with seed moisture contents 10%, 14%, 16% and 18%. During the research, the main factors influencing the process under consideration were identified: the moisture content in barley seeds; initial angle of tray tilt; the number of tray swaying motions. It was determined that the increase of tray filling rate can be achieved by means of setting up the initial angle of its tilt from a reference level, which depends on the moisture content in the barley seeds used in the process of HGF production. This angle is 22 – 24 degrees for the dry barley seed with moisture content 10-14% and 25 – 27degrees for the barley seed with higher moisture content. The upper limit of moisture content in the seeds used in work process should be specified to achieve high quality of a final product. The barley seeds with moisture content 10-15% and the angles of tray tilt 23 – 25 degrees should be used during HGF production