Mathematical Simulation of Using a Combination of Mesh and Porous Materials as a Phase Separator

The paper presents the results of experimental studies of the processes of emptying the fuel tanks of spacecraft liquid rocket propulsion systems at the final stages of free (undisturbed) flight in tanks with innertank capillary devices (IT CD). On the basis of the analysis of the emptying process, the dimensionless complex structure is formed. The complexes determine the dependence of the residual propellant on the physical properties of the propellant and the parameters of the IT CD. Experimental studies were performed on the weightlessness stand, using the principle of realization of the conditions of reduced weight in tested equipment free fall. The results of the experimental studies have shown that the main criterion determining the value of residual propellant is the Froude number. The criterion equation for determination of residual propellant is obtained. The influence of viscosity and surface tension of the propellant on the value of residual propellant begins to affect at the values of the Froude numbers exceeding 104.

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Experimental estimation of residual propellant in the fuel tanks with innertank capillary devices for spacecraft propulsion systems

Сапожников

Polyanskiy

Korol'kov

et al. 2019

EJSI

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Use of combined porous mesh material in phase separation and filtering devices design for space liquid propellant rocket propulsion systems: current state and problems

Alexandrov

Konstantinov

Platov

et al. 2023

EJSI

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The article presents justification for the need to design and develop porous mesh materials to replace the fine-mesh metal single-layer mono-grids used in various technical structures. Evolution of the porous mesh materials composition is described depending on the technical requirements imposed. It is noted that a special role is given to the requirement to the method of connecting the porous mesh material and the main structure of a technical product in terms of reliability, tightness and absence of harmful effects on its internal structure. It is demonstrated that this requirement is successfully implemented in composition of the combined porous mesh material (metal) with edges specially prepared for using the joining method based on the laser pulse welding. Examples are provided of the use of welded structures based on combined porous mesh material in space, aviation and gas industries in the Russian Federation. Current problems of specialized production of the porous mesh materials are considered, and recommendations are provided that should assist in overcoming these.

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Prospects of introducing combined porous mesh materials in the in-tank device structures of the spacecraft and upper stage propulsion systems

Korol'kov

Polyanskiy

Сапожников

2023

EJSI

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The paper presents theoretical and experimental substantiation of the prospects to use materials of the new type, i.e. the combined porous-mesh materials (CPMM), in the in-tank devices (ITD) structures of spacecraft propulsion systems and upper stages to ensure multiple liquid-propellant rocket engine start in practical zero gravity. It is shown that CPMM operation was accompanied by phenomena that were missing, when using mesh materials previously used for this purpose, the so-called mesh separators (MS). It is concluded that at present it should be considered expedient to widely introduce CPMM in the ITD structure elements, since in this capacity the CPMM properties are noticeably superior to those of conventional MS. As a result, the ITD efficiency based on CPMM increases significantly, which finally makes it possible to minimize unusable fuel residues in the tanks and, thereby, increase the energy-mass efficiency of the aerial vehicle as a whole.

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Mathematical Simulation of Using a Combination of Mesh and Porous Materials as a Phase Separator

Cited by 3 publications

References 2 publications

Experimental estimation of residual propellant in the fuel tanks with innertank capillary devices for spacecraft propulsion systems

Experimental estimation of residual propellant in the fuel tanks with innertank capillary devices for spacecraft propulsion systems

Use of combined porous mesh material in phase separation and filtering devices design for space liquid propellant rocket propulsion systems: current state and problems

Prospects of introducing combined porous mesh materials in the in-tank device structures of the spacecraft and upper stage propulsion systems

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