AbstractThere is an innovational fire-extinguishing technology implemented via equipage of inhabited pressurized modules of the space station "Mir" and compartments of the Russian segment of International space station by automatic fire extinguishing systems in an orbital flight.Fire-safety in inhabited pressurized compartments of spacecraft (further – InPC SC) became one of the most dangerous factors during an orbital flight after a number of fire-hazardous situations occurred in different countries during preparation and execution of spaceflights [1,2].High fire-risk in InPC of manned SC is determined by the following specific peculiarities of a arrangement and usage conditions of these items:– atmosphere of inhabited compartments is considerably enriched with oxygen – up to 25–40%;– there are many structural non-metal materials (here and after – materials) in order to lower the weight of InPC SC, most part of these materials is combustible under a given concentration of oxygen (here and after – Coх ) in the atmosphere of InPC SC;– ventilation flow (here and after – Vvf ) under normal operation of ventilation means in InPC SC considerably increases a possibility of fast fire-spread in InPC.– inhabited pressurized compartments of SC are filled with electrical equipment, which elements during failures even in low-current circuits became fire sources in oxygen-rich atmosphere;– indoor spaces of inhabited pressurized compartments of SC, as a rule, have complicated figuration with isolated for usage of local fire extinguishing zones with elements of electrical devices.
HighlightsResults of studies of processes of combustion and extinguishing of engineering non-metal materials are presented.New fire danger indexes in consequences of accomplished researches were discovered.A device of fire extinguishing system for pressurized compartments of spacecraft passed tests in orbital flight is presented.Process of development of direction of fire safety provision in inhabited pressurized compartments of spacecraft is analyzed.Results of the paper can be helpful in active fire-protection of inhabited pressurized compartments of manned spacecraft.
Automatic fire-extinguishing system for inhabited pressurized compartments of manned spacecraft
Acta Astronautica ; 135 ; 100-108
2016-10-06
9 pages
Article (Journal)
Electronic Resource
English
Automatic fire-extinguishing system for inhabited pressurized compartments of manned spacecraft
Online Contents | 2016
|Fire safety arrangement of inhabited pressurized compartments of manned spacecraft
Online Contents | 2016
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