Dynamic process simulation promotes energy efficient ship design

Determining energy-efficient operation modes of the propulsion electrical motor of an autonomous swimming apparatus

“…However, the patterns of power saving modes are paid very little attention to. Many studies have shown that the propeller screw [5,7] renders main load to the engine of propulsion [2,8] complex with rarely taking into consideration the fact that the load moment M c is close to the "fan" type [11,12]. In the first approximation, a given moment is proportional to the second degree of propeller screw rotation frequency w:…”

“…We should take into consideration that it is required when creating such a new Ukrainian and highly technological device as an unmanned swimming apparatus: a) to enable control over rotation frequency of propulsion [2] complex of the apparatus in a relatively small range at minimal capital costs, short time of pre-design and structural-technological preparation for production; b) to ensure work of propulsion electric motor with a relatively low capacity (up to 500 Watts) under a baro-unloaded mode [3]; c) to be able to accomplish a number of additional tasks and meet requirements to design, overall architecture and operation of an unmanned vehicle, including power source, control, navigation, positioning, communication, work of additional devices, mechanisms, etc. ; d) to resolve a challenging task on designing a special-purpose vessel [4,5] -to minimize the cost of the apparatus, to ensure minimum weight and size indicators at the maximum-possible special payload, to minimize duration of design and construction. Such a complicated and relevant problem is solved only based on a systems approach [4][5][6][7].…”

“…; d) to resolve a challenging task on designing a special-purpose vessel [4,5] -to minimize the cost of the apparatus, to ensure minimum weight and size indicators at the maximum-possible special payload, to minimize duration of design and construction. Such a complicated and relevant problem is solved only based on a systems approach [4][5][6][7].…”

Theoretical-applied aspects of the composition of regression models for combined propulsion complexes based on data of experimental research

“…For this purpose, numerical methods of solution and numerical models of problems are widely applied. To conduct the study using an electronic computer (EC), it is necessary to translate numerical models into programs and information arrays, that is, to create informational and software models [2].…”

“…In addition to modern crisis factors, agribusiness has to respond to new global challenges related to supporting food security at the accelerated growth in population [1]. Maintaining food security by means of controlling implies sustainable intensification of agricultural sector with minimal impact on the natural environment and compliance with the norms of population rational nutrition [2].…”