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the combustion integrated rack or sir in

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the destiny laboratory makes it possible

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to perform a wide variety of experiments

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that teach us how fire behaves in

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microgravity

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in the center of the sur is a large

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round chamber called the multi-user

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droplet combustion apparatus

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this 100 liter chamber has eight windows

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and five cameras that allow scientists

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to observe patterns made when burning

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fuels under different

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conditions the five cameras are capable

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of photographing high resolution high

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frame rate images in ultraviolet low

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light and in multiple spectrums that are

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specific to combustion events

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several additional hardware components

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can be added to the ser to customize its

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chamber for specific experiments flex is

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the flame extinguishment experiment that

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utilizes the sur to conduct various burn

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tests on gas and liquid fuel

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it also tests the effectiveness of

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different methods for extinguishing the

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flames from the test

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iss provides a sustained microgravity

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environment which allows scientists to

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observe the geometric chemical and

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thermodynamic properties of both the

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flame and the fuel droplet inside the

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burn chamber

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under these conditions we can advance

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our fundamental understanding of how

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fuels burn in microgravity as well as on

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earth this research will be used to

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better address fire hazards associated

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with liquid combustibles

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the wealth of information obtained from

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the test in flex will also help

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scientists on earth solve problems with

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pollution that is generated by

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combustion

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the many different experiments in the

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combustion integrated rack will help

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engineers increase the efficiency of

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gasoline and diesel engines here on

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earth