In the morning I had an extensive EMU class in which I learned to perform several maintenance tasks and tests on the EVA suit.
In the picture I’m working on removing the Water Line Vent Tube Adapter, which interfaces on one side with the tubing in the PLSS (the life support “backpack”) and on the other side with the LCVG (the Liquid Cooling and Ventilation Garment). It has three flexible tubes. One central tube is the return line of the ventilation loop, which brings the gas back to the PLSS for cooling and for removal of CO2 and condensate. The two other tubes are the supply and return cooling lines: water from the PLSS is circulated in the little tubes in the LCVG to collect heat from the body and is then sent back to the PLSS to be cooled again.
The excess heat is rejected to space via a sublimator, which was the focus of my next task. Using demonstration videos, I learned to insert test strips in specific locations to put them in contact with certain surfaces of the sublimator and test for presence of water.
Other tests I learned to perform are the leak check of the ventilation loop and the measurement of the water flow rate in the cooling lines. All these tests allow the specialists on the ground to make sure the suits stay healthy, as we do more and more maintenance tasks on orbit.
(Trad IT) Traduzione in italiano a cura di +AstronautiNEWS qui:
https://www.astronautinews.it/tag/logbook/
(Trad ES) Tradducción en español aquí:
https://www.intervidia.com/category/bitacora/
(Trad FR) Traduction en français par +Anne Cpamoa ici:
https://spacetux.org/cpamoa/category/traductions/logbook-samantha/
28/03/2014