This paper presents a neural network assisted entry guidance law that is designed by applying Bézier approximation. It is shown that a fully constrained approximation of a reference trajectory can be made by using the Bézier curve. Applying this approximation, an inverse dynamic system for an entry flight is solved to generate guidance command. The guidance solution thus gotten ensures terminal...

In order to design and manufacturing some postharvest equipment, determination of some hydrodynamic properties of crops are necessary. The quality of products in global and local markets can be increased by applying these properties and receive economical benefits. For these purpose, two local varieties of apples in the East Azerbaijan province, Iran(Asheghi and Gare Yapraq)were selected.Ashegh...

In order to design and manufacturing some postharvest equipment, determination of some hydrodynamic properties of crops are necessary. The quality of products in global and local markets can be increased by applying these properties and receive economical benefits. For these purpose, two local varieties of apples in the East Azerbaijan province, Iran(Asheghi and Gare Yapraq)were selected.Ashegh...

As it is known, buoyancy and drag forces rule bubble’s rise velocity in a liquid column. These forces are strongly dependent on fluid properties, gravity as well as equivalent’s diameter. This study reports a set of bubble rising velocity experiments in a liquid column using water or glycerol. Several records of terminal velocity were obtained. The results show that bubble’s rise terminal veloc...

Terminal velocity of chickpea, rice and lentil seeds has been experimentally measured by suspending the seeds in an air stream. In order to assessment the effects of seed size and moisture content on terminal velocity a completely randomized design in factorial experiment was carried out. The results showed that size and moisture content have significant effects (p<0.01) on terminal velocityin ...

The Role of Rain Simulator Height and Rainfall Terminal Velocity Changes in Different Components Runoff Sediment

The terminal velocity of rising microbubbles is a sensitive function of the bubble size and the surface concentration of mobile insoluble surfactants at the gas/liquid interface due to the Marangoni effect. With a model that allows for surface convection and diffusion, we delineate the regimes when the terminal velocity varies between the fully mobile (Hadamard-Rybczynski) and the fully immobil...