International Space Station Water System Architecture and Operational Plan

Yeoman, David A.; Shkedi, Brienne; Tobias, Barry

doi:10.4271/2008-01-2007

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…One difference between simulation and operations on ISS is the tank that is supplied with additional water. Nominal 4.8 l/day water is resupplied from storage tanks on ISS 23 . How much of this water is resupplied on US or Russian side is not known.…”

Section: Comparison Of Flight Data and Simulation Results -Watermentioning

confidence: 99%

Status of the Correlation Process of the V-HAB Simulation with Ground Tests and ISS Telemetry Data

Ploetner

Roth

Жуков

et al. 2013

43rd International Conference on Environmental Systems

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The Virtual Habitat (V-HAB) is a dynamic Life Support System (LSS) simulation, created to investigate future human spaceflight missions. V-HAB provides the capability to optimize LSS during early design phases. Furthermore, it allows simulation of worst case scenarios which cannot be tested in reality. In a nutshell, the tool allows the testing of LSS robustness by means of computer simulations. V-HAB is a modular simulation consisting of a:

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Section: Comparison Of Flight Data and Simulation Results -Watermentioning

confidence: 99%

Status of the Correlation Process of the V-HAB Simulation with Ground Tests and ISS Telemetry Data

Ploetner

Roth

Жуков

et al. 2013

43rd International Conference on Environmental Systems

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“…The WPA's WW tank can hold up to 100lbs of waste (condensate & distillate) as well as its WS tank and water delivery accumulator that can hold up 125lbs and 20lbs of potable water, respectively. It was expected that the USOS would collect 70% of the ISS condensate and produce an excess of water 1 , thus requiring crew to offload water from the water storage tank into CWC-Is. By requiring crew to offload the WPA tanks into CWC-Is, the closed loop system is broken.…”

Section: K Water Balancementioning

confidence: 99%

International Space Station Water Balance Operations

Tobias

Garr²,

Erne³

2011

41st International Conference on Environmental Systems

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In November 2008, the Water Regenerative System racks were launched aboard Space Shuttle flight, STS-126 (ULF2) and installed and activated on the International Space Station (ISS). These racks, consisting of the Water Processor Assembly (WPA) and Urine Processor Assembly (UPA), completed the installation of the Regenerative (Regen) Environmental Control and Life Support Systems (ECLSS), which includes the Oxygen Generation Assembly (OGA) that was launched 2 years prior. With the onset of active water management on the US segment of the ISS, a new operational concept was required, that of "water balance". In November of 2010, the Sabatier system, which converts H2 and CO2 into water and methane, was brought on line. The Regen ECLSS systems accept condensation from the atmosphere, urine from crew, and processes that fluid via various means into potable water, which is used for crew drinking, building up skip-cycle water inventory, and water for electrolysis to produce oxygen. Specification (spec) rates of crew urine output, condensate output, O2 requirements, toilet flush water, and drinking needs are well documented and used as the best guess planning rates when Regen ECLSS came online. Spec rates are useful in long term planning, however, daily or weekly rates are dependent upon a number of variables. The constantly changing rates created a new challenge for the ECLSS flight controllers, who are responsible for operating the ECLSS systems onboard ISS from Mission Control in Houston. This paper reviews the various inputs to water planning, rate changes, and dynamic events, including but not limited to: crew personnel makeup, Regen ECLSS system operability, vehicle traffic, water storage availability, and Carbon Dioxide Removal Assembly (CDRA), Sabatier, and OGA capability. Along with the inputs that change the various rates, the paper will review the different systems, their constraints, and finally the operational challenges and means by which flight controllers manage this new concept of "water balance."

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Water Recovery and Waste Processing

Crooker¹

2018

Handbook of Life Support Systems for Spacecraft and Extraterrestrial Habitats

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International Space Station Water System Architecture and Operational Plan

Cited by 4 publications

References 3 publications

Status of the Correlation Process of the V-HAB Simulation with Ground Tests and ISS Telemetry Data

Status of the Correlation Process of the V-HAB Simulation with Ground Tests and ISS Telemetry Data

International Space Station Water Balance Operations

Water Recovery and Waste Processing

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