RESEARCH PAPER
OPTIMIZATION OF THE PROPELLER BLADES BASED ON CHEMICAL STABLE CARBON PLASTICS
 
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CORRESPONDING AUTHOR
Mikhail Aleshin
Lead engineer, Peter the Great St.Petersburg Polytechnic University, Saint-Petersburg, Russia, Polytechnicheskaya, 29, 195251
Publication date: 2019-04-30
 
Eurasian J Anal Chem 2018;13(3):emEJAC171158
 
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ABSTRACT
The results of the structural optimization of propeller blades are presented taking into account its composite chemical stable carbon structure and pitch change mechanism of the propeller and using FSI (Fluid-Structure Interaction) approaches. The optimality criterion of the problem is the propeller thrust with optimization parameters being the characteristics of the internal structure of the propeller blade made from a carbon plastic composed by different angle. Together with the optimization of the blade shape, the problem is considered which concerns the reduction of the deformations caused by loads occurring during the operation of the propeller, since significant deformations of the blades lead to decreased thrust. The use of chemically stable material such as the carbon increases the corrosion resistance of the finished product (propeller) and increases the shelf life of such products. Thus, the following optimization problem can be formulated: to find the optimal configuration of the carbon plastic and its micro-geometrical parameters along the height of the blade to minimize deformations and increase the thrust of the propeller. At the same time, the optimization parameters are limited by the weight of the propeller and the strength characteristics. The technique presented in the paper allows us to obtain the reliable values of thrust and reduce the estimated computational time. The influence of the structure and chemical properties of the composite material on the mechanical properties of the blades is shown; the values of deformation of the blades under the action of centrifugal and aerodynamic loads are given.
eISSN:1306-3057