Problems of ultralow power turbine design in a turbine drive system

Abstract

Ultralow power turbine drives (ULPTD) are used in the aerospace industry and in other sectors of theeconomy as source of energy for ancillary systems. At present, the actual task is improvement of their efficiency. One of the most promising areas for its increase is to optimize the parameters of turbine drive already in the earlystages of design.The article discusses the design of optimalultralow power turbine (ULPT), which is the main hub of ultralow power turbine drive. The basic problems of ultralow power turbine drive system optimizationthrough a systemic approach to design. The problem of optimization is tasked as a problem of the conventionalvector structural-parametric optimization. Methods and algorithms for its solution, justified criteria for ULPTDeffectiveness evaluating, selected optimized parameters of axial and centrifugal turbines types are described. Asthe performance criteria is selected coefficient of performance (COP) of the turbine, its mass, the specific consumptionof the working fluid, the cost of operating turbine drive. Expediency calculation mode selection in the optimization process of regime parameters evaluation criteria for generalized on ULPTD modes efficiency isgrounded. Results on the effect of uncertainty on the value of project information criteria are given.