Power control of the engine operating on the fixed pitch propeller

Abstract

The analysis of operational and constructive methods for changing the power of the main engine working on a fixed pitch propeller has been carried out. To purposefully change the operating mode of the main engine, additional (special) jet action of water on the propeller blades of a fixed pitch can be used. The physical effect of supplying additional water to the blades and its effect on the effective power of the main engine is explained. The mutual arrangement of the propeller load curves of the characteristic modes of the engine when additional water is supplied to the blades is analysed. The additional modes of operation of the main engine, implemented with the help of an additional jet effect, are determined. Purposeful change in power consumption at a constant speed prevents possible overloading of the main engine in case of deterioration of operating conditions. Of further interest is the assessment of the thermal and mechanical tension of the main engine operating in varying operating conditions.