When a cross-domain robot (CDR) flies on the water surface, large pitch angle and roll may lead to flooding into cabin or even overturning. In addition, CDR is influenced by some uncertain parameters external disturbances, such as resistance current. To constrain attitude improve robustness of controller, non-singular terminal sliding mode asymmetric barrier control (NTSMABC) algorithm proposed...

In this paper, three dimensional flow characteristic was presented by a revision of an impeller of an axial turbo fan for improving the airflow rate and the static pressure. TO consider an incompressible steady three-dimensional flow, the RANS equations are used as the governing equations, and the standard k-ε turbulence model is chosen. The pitch angles of 44°, 54°, 59°, and 64° are implemente...

The article presents the results of research on operation a wind microturbine model with an adjustable blade pitch angle. physical basics turbine and methods its optimal control are discussed. measurements carried out for selected geometry possibility adjusting angle presented. tests were resistive load linear characteristic non-linear Li-Po battery. simple MPPT algorithm practical controlling ...

Plate heat exchangers are widely used in industries due to their special characteristics, such as high thermal efficiency, small size, light weight, easy installation, maintenance, and cleaning. The purpose of this study is to consider the effect of depth, angle, and pitch of hemispheric Chevrons on the convective heat transfer coefficient and pressure drop. In the simulation of the heat ex...

Plate heat exchangers are widely used in industries due to their special characteristics, such as high thermal efficiency, small size, light weight, easy installation, maintenance, and cleaning. The purpose of this study is to consider the effect of depth, angle, and pitch of hemispheric Chevrons on the convective heat transfer coefficient and pressure drop. In the simulation of the heat ex...