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Calculation and Design of the Main Equipment for Mobile Space Simulation System

Natalija Mozga
Natalija Mozga
, 
Juris Gutans
Juris Gutans
, 
Raivis Kubulins
Raivis Kubulins
 and 
Rafał Chatys
Rafał Chatys
   | Mar 13, 2024
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Article Category: research article
Published Online: Mar 13, 2024
Page range: 71 - 89
Received: Oct 03, 2022
Accepted: Jan 08, 2024
DOI: https://doi.org/10.2478/tar-2024-0005
Keywords
© 2024 Natalija Mozga et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Mobile space environment simulator developed in a joint project between RTU and SIA Cryogenic and Vacuum Systems.
Mobile space environment simulator developed in a joint project between RTU and SIA Cryogenic and Vacuum Systems.

Fig. 2.

Vacuum system ‘METAMORPHOSIS’ for outer space simulating.
Vacuum system ‘METAMORPHOSIS’ for outer space simulating.

Fig. 3.

Vacuum system ‘METAMORPHOSIS’ is housed in a vehicle.
Vacuum system ‘METAMORPHOSIS’ is housed in a vehicle.

Fig. 4.

Determination of vacuum chamber diameter size.
Determination of vacuum chamber diameter size.

Fig. 5.

MSESF ‘METAMORPHOSIS’ vacuum pumping system including dry vacuum pump and cryogenic pump.
MSESF ‘METAMORPHOSIS’ vacuum pumping system including dry vacuum pump and cryogenic pump.

Fig. 6.

Mobile space environment simulation facility with control panels.
Mobile space environment simulation facility with control panels.

Figure 7:

Vacuum system’s drawing.
Vacuum system’s drawing.

Operating conditions.

Part Design temp. (C) Design pressure (MPa) Permissible stresses (MPa) Estimated thickness with increments (mm) Permissible pressure (MPa) Strength condition
The flat bottom 30 (0.1000) 149 9.457 0.1097 Satisfied
The cylindrical shell 30 (0.1000) 149 3.849 0.2082 Satisfied
The elliptical cover 20 (0.1000) 150 2.137 0.6911 Satisfied

The initial data for calculations.

Main part Material Diameter (Mm) Thickness (mm) Length (height), mm Total increment, (mm) Weld strength factor
The flat bottom AISI-304 800 5 5 0,5 0,9
The cylindrical shell AISI-304 800 5 1300 0,5 0,9
The elliptical cover AISI-304 800 5 268 0,5 0,9

GSFC-STD-7000 Test requirements. Vacuum, Thermal, and Humidity Requirements

Requirement Payload or Highest Practicable Level of Assembly Subsystem including Instruments Unit / Component
Thermal-Vacuum 1,6 T T T2
Thermal Balance 1,3,6 T and A T, A T, A
Temperature-Humidity3 (Habitable Volumes) T / A T / A T / A
Temperature-Humidity4 (Transportation & Storage) A T / A T / A
Leakage5 T T T

Test conditions.

Part Design pressure (MPa) Permissible stresses (MPa) Estimated thickness with increments (mm) Permissible pressure (MPa) Strength condition
The flat bottom 0 230 0.5 0.1693 Satisfied
The cylindrical shell 0 230 0.5 2.316 Satisfied
The elliptical cover 0 230 0.5 2.322 Satisfied
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