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as we prepare to venture deeper into

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space on long-duration missions there

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are lots of things to consider when it

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comes to just how much the crews will be

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able to take along with them Lori Meggs

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is at the payload operations integration

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Center at NASA's Marshall Space Flight

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Center to talk about one of the things

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that is very near and dear to her heart

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and one of her favorites close lori

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that's right but wouldn't it be a lot

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easier if we could just wear the same

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clothes every day until we got tired of

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them and then throw them away well

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that's how it works for crewmembers on

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the space station and until now it's

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never really been studied as to how long

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they wear their clothes but it's vital

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information as we go deeper and farther

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into space but in order to wear your

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clothes longer well you've got to find

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that right fabric and that's where a

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three-year advanced clothing study comes

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in

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look at the types of clothes that we

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need to send for astronauts and

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crewmembers to wear as we go further to

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asteroids and to Mars

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Evelyn Orndorff is actually studying

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this and your textile engineer tell us

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what we're looking at here we are

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looking at the three years of studies on

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different clothes that we would like to

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select from for those long-duration

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missions that will take us to Mars so it

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was ground-based studies for about three

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years right right and and what did you

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find you found this row is actually

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better to send yes

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so in Space Station just in front of you

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are the different garments we actually

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send on orbit for expedition 39 and 40

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was crew of three astronaut and three

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cosmonauts who wore those clothes some

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of these clothes I exercise clothing and

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the others were two of the t-shirts were

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used as routine wear over six 15

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sessions and Darwin will explain that

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later what we're talking about and and

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this is pretty much basically what they

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exercise in and and maybe kind of wear

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day-to-day just yeah

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so we would say lounge clothes yes so

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what was a shift was right there the to

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polyester their shorts and a polyester

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t-shirt and they were used for exercise

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but then we also used wool for exercise

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because we'll as very interesting

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properties in drying and actually after

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it has dried it smells bad when it's wet

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but once dried it doesn't smell anything

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and that's what we want when these when

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they're exercising when they're sweating

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I mean how long do they typically wear

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their clothes right now well we have

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never captured that because in the crew

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catalog we recommend a certain usage

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rate and based on that rate we know when

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to resupply but we have never studied

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and asked any crew members all the way

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from shuttle program to a Space Station

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program how long they were the clothes

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so this is why we needed to do those

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studies it was very important we start

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quantifying length of wear and it's

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pretty much a dream come true you just

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wear it as long as you can then you

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throw it away right now but but that's

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not going to be possible as we go

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farther correct basically using

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disposable clothing of a long duration

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mission is heavy burden on the logistics

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and we cannot afford to use the same

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type of garments on those long-duration

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missions that we've used so far in those

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missions like shuttle and station

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missions where you have constantly

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resupply of food and clothing and other

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consumables for some programs who had in

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the past we were on the forefront of

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textile technology we were not just

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using what's commercially available we

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were designing for those spacecraft with

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travel and station we have ambient air

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so we can use the same thing we use on

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earth but we want to peak or at least

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what we did in no studies that led to a

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selection of what went on the expedition

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39 and 40 that's based on the best

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that's available now and this is where

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you see all these garments because

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before we selected these

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we looked at what you see there with all

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these other fabrics all right we have

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the marina wool under this microscope

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and and this is the fabric that I was

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just holding and and that was what was

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selected for the study yes it's one of

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the fabrics that was selected for the VA

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closing study and when we looked at

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different types of wool the reason we

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chose merino is because they are the

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finest wool fibers as you touch the

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fabric you don't have the usual

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prettiness you have with the traditional

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rule like and cheap really smooth yes

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and so when you look at it under the

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microscope then you see all of these

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really neat pictures here what you're

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looking at there so what we look at

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first because these were new products to

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us we looked at the type of neat

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construction these are all knitted goods

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that we have those merino wool fibers

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the wool industry has done lots of

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advances in making these fibers feel

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smoother and the you know touch when you

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touch it earlier you didn't realize it

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was wool until we told you and so they

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also less likely to form those little

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pairs and they'll be more durable and

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that's what we're looking for and we

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pick some products that were the best in

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what was available commercially so these

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were the actual clothes used in the Ivy

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a clothing study tell us about that

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right the we we had a ground study that

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ran for about a year and a half when we

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had 80 participants and there were we

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had them wear all sorts of different

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fabrics and that led us to choose the

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fabrics used in the space station study

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the Ivy a clothing study and and that's

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these right we chose feel that and you

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wouldn't believe that that's what was so

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yeah this this is merino wool it has a

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longer fiber and it's been specially

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processed and these are polyester right

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really really light

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polyester right right those are the

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lightest polyester that shorts that we

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can buy on the market right yeah so so

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tell us what we what we looked for in

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this study on the space station how long

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it went for and how many subject

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she had right well we had actually we

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ended up with six subjects three

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astronauts and three cosmonauts and my

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understanding it was that our study was

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in a way groundbreaking in the sense

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this was the official first official

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involvement of both astronauts and

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cosmonauts in a human study well we all

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like clothes it's and the so we were

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lucky to get the the the extra three

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participants and we asked them to set

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aside 15 days 15 exercise periods to

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wear these exercise clothes and routine

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t-shirts we allocated six sets of

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clothing for them to wear in the 15 days

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but when they would get tired of a

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particular garment they would dispose of

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it and then pick the next one that was

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assigned to them in a particular

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sequence each astronaut had his own

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sequence between wool and polyester and

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weld acrylic and none of the astronauts

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or cosmos got fully to the end of their

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six yeah yeah they did let so they ended

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up with a lot of extra clothing up there

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in their pantry aboard the space station

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it's not a bad problem so it's all about

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just how long they felt like waiting

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right and we also collected that we

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collected length of wear data

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yeah and we collected perception data

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with a daily questionnaire and we are in

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the process of compiling the

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questionnaire data and analyzing it and

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sometime in the future hopefully this

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year we will have the results from that

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study and then I can get some and I can