International Space Station (ISS) Environmental Control and Life Support (ECLS) System Overview of Events: February 2006 - 2007

Gentry, Gregory J.; Reysa, R. P.; Williams, David E.

doi:10.4271/2007-01-3099

Cited by 2 publications

(3 citation statements)

References 1 publication

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“…Various life support systems sustain conditions for humans to work productively and safely. Air pressure, temperature, humidity, and contamination must be kept under control [1]. The evaluation of the future of both noncommercial and commercial human spaceflight in low-Earth orbit, including long-range opportunities for the ISS and other free-flying structures, is ongoing.…”

Section: Introductionmentioning

confidence: 99%

Effects of Spaceflight on Human Skin

Farkas¹,

Farkas

2021

Skin Pharmacol Physiol

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During both short- and long-duration spaceflight, several health problems can occur, including those of the skin. Astronauts in space and after returning to earth experience erythematous, burning, itchy, dry, sensitive, and thinning skin. Other skin problems, such as infections, abrasions, lacerations, delayed wound healing, and accelerated skin aging, are also common. Human skin is an ecosystem composed of a wide range of habitats for bacteria, fungi, and viruses called microbiome, which not only show a strong skin site-specific preference but also serve as microbial fingerprints that are highly unique to individuals. These human skin-associated microorganisms make a substantial contribution to the microbial ecosystems that inhabit the closed environments in space. On the other hand, human skin microbiome is also subject to change during spaceflight, which may lead to skin infections or the flare up of skin diseases. This review highlights some of the interactions between the space environment and the skin.

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Section: Introductionmentioning

confidence: 99%

Effects of Spaceflight on Human Skin

Farkas¹,

Farkas

2021

Skin Pharmacol Physiol

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“…Because the cargo spaceships between the space and earth can't be launched deliberately at any time, EOGS must guarantee the high reliability and ECLSS will open the carried oxygen bottle to supply oxygen to the astronauts [10] when EOGS fails to produce oxygen. Since the oxygen carried during each launch is limited, and as the oxygen is gradually consumed, the oxygen content in the cabin will continue to decline, which not only affects the normal work of the astronaut, but also poses a serious threat to the life of the astronaut [11,12]. The electrolytic oxygen plant of the International Space Station (ISS) developed by the United States was put into formal use after being verified in the orbit.…”

Section: Introductionmentioning

confidence: 99%

“…However, the oxygen concentration in the cabin is not suitable as a standard for judging whether the EOGS system is operating normally, due to the particularity of the space station. Given the backgrounds of irregular connection of multi-cabin sections, the large space capacity, and the uncertain metabolic activities of many astronauts, the O2 concentration in the capsule is a slowly changing parameter, the response speed of which is very slow [23]. Under such conditions, the concentration of hydrogen and oxygen at the outlet of the EOGS system can be used as direct indicator parameters for online monitoring.…”

Section: Introductionmentioning

confidence: 99%

UKF-Based State Estimation for Electrolytic Oxygen Generation System of Space Station

et al. 2021

Applied Sciences

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Electrolytic oxygen generation system (EOGS) is the only system that can provide oxygen for astronauts in a physicochemical regenerative way in a long-term manned spacecraft. In order to ensure that the astronauts in the cabin can obtain a continuous and enough oxygen supply, it is necessary to carry out real-time condition monitoring and fault diagnosis of the EOGS. This paper deals with condition monitoring and fault diagnosis of the EOGS. Firstly, the dynamic model of the system is established based on the principle electrolysis for actual oxygen production system and the state observer of the system has been designed by using unscented Kalman filter (UKF). The total pressure in the cabin and the partial pressure of oxygen in the electrolytic cell can be observed. Then, considered the actual conditions of the manned space mission with one more astronaut, i.e., 3 astronauts, the simulation experiment is carried out. The simulation results show that the method can effectively estimate the system state, and it is of great significance to ensure the normal operation of the electrolytic EOGS system in the space station.

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International Space Station (ISS) Environmental Control and Life Support (ECLS) System Overview of Events: February 2006 - 2007

Cited by 2 publications

References 1 publication

Effects of Spaceflight on Human Skin

Effects of Spaceflight on Human Skin

UKF-Based State Estimation for Electrolytic Oxygen Generation System of Space Station

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