The development of scientific and technological progress is currently in the direction of the introduction of electronic control systems that can help a human being in everyday affairs that does not require special creativity, for example, in unmanned driving, in aviation - the inclusion of an autopilot. The same happens in agricultural machinery. So in the modern harvester uses a system of precision agriculture, however, has reached the introduction of electronic systems that would regulate the optimum process flow of the operations, to take account of changing agricultural conditions on the field. Everything necessary for this purpose in combine harvesters is, it is electric and hydraulic drives that regulate the speed of the combine, the speed of rotation of the reel, the speed of rotation of the threshing unit, the speed of the fan, the amount of opening of the blinds, etc. However, now the combine operator sets it all manually. In the DSTU for several years as a program for on-Board computer (BC) and received a Patent for the invention, allowing to start the implementation of the process setup of the combine in automatic mode, but often the developer is easier to buy something abroad than to design and implement.
The objective of flood frequency analysis (FFA) is to associate flood intensity with a probability of exceedance and for making probabilistic estimates of a future flood event in Allala basin based on the historical discharge record at Sidi Akkacha gauging station, the peak floods discharge of Allala river for 5, 10, 50, 100 years return period are estimated using exponential distribution and the stage at different position of river are calculated using HEC RAS model . Based on the modeling study carried out considering 62 cross sections for 8 km length of river, The Output HEC-RAS model show that the existing embankments system on the banks of Allala River is not sufficient to resist the peak flood discharge of 100 years return period, water level profile shows that a maximum of 1.25m in left bank((at 1.2 km downstream) is needed to protect the inundation of the low laying areas of Old tenes.
The paper deals with the questions related to the improving of operating reliability of combine harvesters by means of synthesis of formerly used methods with the range of modern structural transformations in technical service, namely the three-level system of repair parts supply, the module principle of technical service and repair, the АВС (or XYZ) classification.
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