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houston station on space to ground

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knock knock who's there

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welcome to space to ground i'm dan

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hewitt kate rubins got hands on this

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week with one of the station's biggest

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exploration technology demos

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rubens conducted the modal test inside

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the bigelow expandable activity module

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or beam the large expandable habitat

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that is the first human rated of its

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kind in history

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using her fists rubens actually banged

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on the walls of beam while sensors

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recorded the sound and vibration inside

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the module

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this will give engineering teams

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important structural data including

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beam's interaction to loads while

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attached to station as the expandable

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continues its two-year test phase

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meanwhile takuya onishi had his hands

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full with a large new combustion

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experiment

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he spent the week setting up the group

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combustion module for the upcoming group

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combustion experiment the japanese

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investigation will test a theory on fuel

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spray behaviors as flames spread across

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a cloud of fuel droplets

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a lot of rocket engines use this spray

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style combustion but the high speeds of

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the fuel and the oxidizer as they move

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through a combustion chamber make it

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virtually impossible to analyze

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group combustion changes that and its

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results could help in the development of

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advanced rocket engines

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this week twitter user la denizen asked

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when there will be a us-based manned

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mission to station again how about next

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year

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u.s commercial crew companies spacex and

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boeing are counting down milestones to

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their first flights to the station

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just this week boeing showcased new

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simulators for its cst-100 starliner

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spacecraft which astronauts will train

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on here at the johnson space center

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current schedules have spacex aiming for

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the second half of 2017 for a first

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crewed flight while boeing is targeting

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early 2018.

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and with the international docking

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adapter installed the space station is

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ready and waiting

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keep sending us your questions using the