https://repository.utm.md/handle/5014/37169 Proceedings of the 18th Edition of European Exhibition of Creativity and Innovation, Romania Wed, 23 Sep 2026 17:30:18 GMT 2026-09-23T17:30:18Z https://repository.utm.md/handle/5014/37194 Precessional planetary transmission with balancing of unbalanced drive shaft masses BOSTAN, Viorel; BOSTAN, Ion; MAZURU, Sergiu; VACULENCO, Maxim; LEALIN, Stanislav; BODNARIUC, Ion; BREGNOVA, Alina; CIOBANU, Radu; CIOBANU, Oleg The invention relates to machine construction, namely to precessional planetary transmissions. The precessional planetary transmission comprises a housing (1) with a flange (2), in which are located a satellite wheel (4) with two bevel gear crowns (6, 7), a driving shaft (9) with a crank (12), installed on bearings (13), a driven shaft (14), installed on bearings (15), and two central bevel gears, fixed (3) and movable (5), which interact with the satellite wheel (4) by means of the gear crowns (6, 7); the satellite wheel (4) is mounted on a spherical support (8), located on the driven shaft (14), in its precession center O, coaxial with the movable wheel (5); the satellite wheel (4) is equipped with a half-shaft (10), at the end of which bearings (11) are mounted, kinematically connected to the driving shaft (9) with a crank (12); in the crank (12), on the side, an inner cylindrical surface is made inclined at a nutation angle θ to the axis of the central wheels (3, 5), in which the half-shaft (10) of the satellite wheel (4) is installed, the axis of which passes through the precession center O, at the same time in the crank (12) axial conical holes are made for balancing the unbalanced masses of the driving shaft (9) with a crank (12). The technical project is developed and the industrial prototype is experimentally researched. Patent nr. 4910 of 2025.07.31, AGEPI Thu, 01 Jan 2026 00:00:00 GMT https://repository.utm.md/handle/5014/37194 2026-01-01T00:00:00Z https://repository.utm.md/handle/5014/37193 Precessional planetary transmission with axial floatation of the satellite wheel and portsatellite BOSTAN, Viorel; BOSTAN, Ion; MAZURU, Sergiu; VACULENCO, Maxim; BODNARIUC, Ion; CIOBANU, Radu; CIOBANU, Oleg; VENGHER, Dumitru The invention relates to machine construction, namely to precessional planetary transmissions. Precessional planetary transmission, which contains a housing (1) with a flange (2), in which are placed a satellite wheel (4) with two conical crown gears (6, 7), a driving shaft with a crank (12), installed on bearings (13), a driven shaft (14), installed on bearings (15), and two central conical gears, fixed (3) and movable (5), which interact with the satellite wheel (4) by means of the crown gears (6, 7); the satellite wheel (4) is rigidly mounted on a satellite carrier (8), placed on a spherical support (9), located on the driven shaft (14) with the possibility of axial movement, in the center of precession O thereof, coaxial with the movable wheel (5); the satellite wheel (4) is equipped with a half-shaft (10), at the end of which bearings (11) are mounted, kinematically connected to the driving shaft with a crank (12); in the driving shaft with a crank (12), on the side, an inner cylindrical surface is made inclined at a nutation angle θ to the axis of the central wheels (3, 5), in which the half-shaft (10) of the satellite wheel (4) is installed with the possibility of axial movement, so that the satellite wheel (4) together with the satellite carrier (8) floats axially with a positioning with clearances between the central wheels (3, 5) with the center of mass merged with the center of precession O. The technical project is developed and the industrial prototype is experimentally researched. Patent nr. 4911 of 2025.07.31, AGEPI Thu, 01 Jan 2026 00:00:00 GMT https://repository.utm.md/handle/5014/37193 2026-01-01T00:00:00Z https://repository.utm.md/handle/5014/37192 Horizontal axis wind turbine with two counter-rotating rotors DULGHERU, Valeriu; BOSTAN, Ion; GUȚU, Marin; CIOBANU, Radu; CIOBANU, Oleg; ZAPOROJAN, Sergiu; BODNARIUC, Ion The invention relates to energy, namely, to horizontal axis wind turbines, and can be used for converting wind energy into electrical energy with increased conversion efficiency. A horizontal axis wind turbine with two counter-rotating rotors includes a support tower (1), on which a nacelle (2) is installed with the possibility of rotation around the axis of the support tower (1). In the nacelle (2) is installed a radial generator with permanent magnets (3), the rotor (4) of the generator is fixedly connected to the wind rotor shaft (5) with aerodynamic blades (6), installed at an angle of attack –αoptim±Δα. The stator (7) of the generator is fixedly connected to the wind rotor shaft (8) with aerodynamic blades (9), installed at an angle of attack optimal in terms of wind energy conversion +αoptim. The stator (7) is connected to the nacelle (2) by means of a one-way coupling (10), and the rotor (4) of the generator is connected to the nacelle (2) by means of a one-way coupling (11). The horizontal axis wind turbine with two counter-rotating rotors operates in the following way. At the wind direction indicated in the figure, the air currents act on the aerodynamic blades (6), installed under the angle of attack –αoptim±Δα, driving the wind rotor (5) and the rotor (4) of the generator (3) into rotational motion, which will rotate with the angular velocity ω1, producing the amount of power P1. The air currents, which pass through the wind rotor (5), will act on the aerodynamic blades (9), installed under the angle of attack –αoptim, driving the wind rotor (8), which is rigidly connected to the stator (7) of the generator (3) into rotational motion. as a result, the stator (7) will rotate in the opposite direction to the rotor (4) of the generator (3) with the angular velocity ω2, producing the amount of power P2. Thus, the magnetic field of the stator (7) accumulated from the counter-rotating rotations of the wind rotors (5) and (8) will rotate with the total angular velocity ω=ω1+ω2. The value of the angle of attack deviation ±Δα will be chosen provided that P1= P2. Patent application nr. 2785 of 2026.04.10, AGEPI Thu, 01 Jan 2026 00:00:00 GMT https://repository.utm.md/handle/5014/37192 2026-01-01T00:00:00Z https://repository.utm.md/handle/5014/37191 Method for nutrition of broiler chickens CAISÎN, Larisa; DABIJA, Adriana; AGAPII, Vitalii; BIVOL, Ludmila; MALENCHI, Dumitru; AVRAMIA, Ionuţ The invention relates to the field of poultry farming, in particular to the composition of compound feeds intended for broiler chickens, with the inclusion of brewer’s yeast. A method of feeding broiler chickens, characterized in that brewer’s yeast is introduced as a biologically active feed additive into compound feed formulations differentiated according to the growth phases of the birds, namely the starter phase, grower phase, and finisher phase. The brewer’s yeast is included at a proportion of 2.0% with the aim of improving nutrient utilization, optimizing growth performance indicators, reducing specific feed consumption, and increasing carcass yield. Patent application No. 2792 Thu, 01 Jan 2026 00:00:00 GMT https://repository.utm.md/handle/5014/37191 2026-01-01T00:00:00Z