Dynamic model of the external heat engine of the spacecraft power system

Zenkin, V. A.; Valiullin, A. N.; Bobylev, A. V.

doi:10.1063/1.5133190

XLIII ACADEMIC SPACE CONFERENCE: Dedicated to the Memory of Academician S.P. Korolev and Other Outstanding Russian Scientists – 2019

DOI: 10.1063/1.5133190

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Dynamic model of the external heat engine of the spacecraft power system

V. A. Zenkin

A. N. Valiullin

A. V. Bobylev

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2022

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Cited by 1 publication

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Pneumatic Damper Multicriteria Optimization in the Free-Piston Stirling Engine Displacer

Bobylev

Zenkin

2022

HoBMSTU.SME

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The free-piston Stirling engine is a complex self-oscillating system, which parameters should be strictly coordinated with each other to ensure the unit operability. One of such coordination tasks is to ensure the balance of energy input to and output from the engine displacer. In this case, energy output depends on the dissipative forces, and energy output is provided by the displacer rod and depends on its diameter. The need to select rod diameter complicates and slows down the engine design. In addition, the system possible instability could lead to the engine racing. To solve this problem, it is proposed to install a pneumatic damper on the displacer rod ensuring the dissipative forces growth with an increase in the displacer amplitude above its nominal value. Thermodynamic model was created to evaluate the damper characteristics and select its parameters. MATLAB software package was used as the development environment. The system of differential equations was integrated using the Runge --- Kutta family method. The damper multicriteria optimization problem was formalized, and two objective functions with five independent parameters were compiled. Optimization was performed using the genetic algorithm, and the Pareto front was built. To evaluate results of the work performed, the damper mathematical model was integrated into the Stirling engine mathematical model, and the working process was calculated with selected damper parameters. It is demonstrated that the developed pneumatic damper prevents an increase in the displacer oscillation amplitude ensuring system stability and reducing time for the unit design

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Pneumatic Damper Multicriteria Optimization in the Free-Piston Stirling Engine Displacer

Bobylev

Zenkin

2022

HoBMSTU.SME

View full text Add to dashboard Cite

show abstract

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Dynamic model of the external heat engine of the spacecraft power system

Cited by 1 publication

References 17 publications

Pneumatic Damper Multicriteria Optimization in the Free-Piston Stirling Engine Displacer

Pneumatic Damper Multicriteria Optimization in the Free-Piston Stirling Engine Displacer

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