Hubble, Wanna, Brian Steam discussed on NASACast Audio

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Of years and helped design and build a mess itself Having that knowledge here at JC has been just super super helpful to us to be up to be able to go off and design. This helped build the mockup for us to be able to go often in using these training events in tool design events I would call them in the beginning and their innate knowledge from that is what helped us be able to figure out the exact works that they wanted to be. And when we first Brian. I'm sure you remember when we first started this many years ago we were actually in a different location on MS itself and once the in the Smart Mba folks got together with the smart engineers that knew about ams itself. We determined that was not going to be the best location for Navy crew member to access what we needed to get to so they went back with the folks at Cernan really determined another location. Okay this new location will also give us this access. Would this work from An. Va Perspective. So Brian Steam. Anyone often they figured out what was going to be the best way to access that and we went running from their here. We go here. We are yeah here we go I know you said you said you working with teams that are sort of local youth have to work with teams. Kind of all over Did you pull some. I'm trying to think of another case scenario but one that comes to mind naturally is Hubble was their knowledge pulled from from those servicing missions. Absolutely so a lot of the fasteners. So we've got to remove there's a lot of fasteners that are just normal fasteners. He'd have maybe not at home but on an hardware on the ground that are not compatible so for bolts. What's that we plan to remove during spacewalk? It has to be captive right. We don't want it floating away so generally spring loaded. They've got clip or some other means to keep the bull captive even when it's released from the hardware that using so for this hardware. None of that was built in place. Because I didn't intend to do it right. That was one of the things that was I think I can say a large part of the work on Hubbell where they removed a lot of fasteners and some of them even tiny tiny fasteners. So we're able to leverage that and US news We call him. Hubble heritage tools to capture these fasteners so They've got basically a bit with a fork at the end that you're able able to scoop under the head of the faster and under the Washer and actually capture that fastener as you're backing out of the the hardware see. It's details like that. I find absolutely fascinating because you just hear like oh it was meant to where it was. You know you were meant to service this spacewalk like batteries right. Everything is is kind of designs signed so if human hands were meant to go service it but when you get into the details of why this was not designed to be serviceable. It gets really complicated. Okay because you're talking about these tiny little things that flowed out not only the tiny and hard to work with. But you gotta do it this bulky suit with these bulky gloves now that's where the challenges come for you guys for sure. Yeah and you you know some of the other differences with Hubbell. I what I would focus on from a program perspective is shuttle or I should say Hubbell had individual shuttle missions designated. You know this is what we are going to do. Launching this shuttle mission so that we can go up and repair Hubble man a whole army me of folks behind them and rather larger bucket of cash to whole from to be able to go off and design all these great new tools and events training all these things that they needed from a space station perspective with a lot of other priorities going on right now in a space station we live and breathe and work in space every day of the year and and So we had to balance those priorities with the priority of going off and being able to repair the MS So our group of folks was much smaller that we were able to leverage against this problem that we saw in front of us and our bucket of money was smaller so it was a real challenge from the team perspective of really looking at this differently and saying how can we go about this safely with a high opportunity for mission success and to be able to repair this item and really increase our knowledge of physics for for years to come. Yeah it was. It's been a really unique challenge for the entire community resource wise staffing wise. Definitely those constraints also like you mentioned. I mean this is on the International Space Ace station. I guess. The difference with show with Shuttle going to Hubble is that that was it it was shuttle going to Hubble this thing. There's a lot of things happening aboard the space station. The crew busy there's launches and landings happening all the time so not only you know finding the you're limited resources to work with this but finding the opportunity the timeframe where you can actually do it. That'd be challenged liners certainly have a big challenge them with these next series of battery. EPA's and like you mentioned all the comings and goings to station and all the other great great science at station is doing as well. So it's a balance balancing act to be able to fit all these things into the limited number of hours in the day. Besides the fact that the crew they live there right they have to eat. They have to exercise. They have to take care of business on station. So it's just like being at home here. We all have things we have to do at home. You have to balance that workload. Glow that's right. They're doing a great job so really looking forward to seeing the schedule and in the coming weeks. Well let's rewind the clocks a little bit. Let's go back to you you mentioned Four years you mentioned four years that you've been working on it. Take me back to the beginning when this first became something that we started talking about. Were GonNA look at repairing the alphabet next but trauma so you might remember About four years ago we did a space walk. Were part of that. was we saw a big blanket on. Ams so they were having difficulty difficulty with Thermal conditions at that time and The blanket was kind of their first step in troubleshooting. They thought it was just something. And how how. The system was designed something they didn't anticipate so we did that. We install the blanket on the whole Port facing side of ams and we also installed A smaller we called it a tent but a little tent blanket over a very small radiator probably about the size of a Like a lunch bag at that's and and It was very soon after that where The MS folks were looking at their data still and quickly realizing that. That wasn't accomplishing. What they I thought it was going to? And they realized they had a bigger problem at that point so They started looking into it and it was really on the heels of that space walk when we kicked off all these discussions to to replace the whole cooling system. So that's what was wrong was the cooling system and there's a series of four pumps that are on the two different channels in the cooling system. There and the pumps were having issues Started failing will pretty much one at a time -serily as they would start the new pump. One pump runs at the time and a pump would run for a while and see some issues and eventually three of the four pumps have failed and really the fourth pump is on its last legs. They they run it occasionally. They're able to get science when the pump is running. The system is being cooled So we're hopeful to go and bypass that old system. We cut into the old system and install the new system on top of it and then we'll provide them for new pumps to last them the life of space station. Okay it a lot more science out there still. Yeah that's and that's a kind of a key driver of of this right. I think if I'm not if I'm not mistaken. Ams was designed for a three year lifespan. However it's getting some really valuable science and people recognize that and WanNa continue that so this work is really to extend the life and keep that going right? WanNa keep collecting the data guys job to do that. Pressure no pressure okay so let's get into what's going into the Nitty Gritty of Alpha Magnetic Spectrometer. And why it's a bit more complicated so so you start taking off You know you realize there was this issue. Four four years ago the pumps aren't working. Okay where do we start. What is wrong? How we're GONNA fix this thing? What were some of the first things you were doing? Yeah I we gathered the team. You know we got the FDA experts brand was a part of the blanket install so he came on board and of course the MS Project Office that built and designed was in support of that whole side of things to get launched on the shuttle. We brought in safety and Tools engineers that built tools in the past. And I'm real familiar with and we just started started brainstorming with that team and really looking at the wooden mock-up a very vague structure that we had Amazon and a lot of powerpoint presentations and things was just start brainstorming ideas. And how we were going to go about. What is it we needed to do? And then how we would approach it from an MBA perspective that's interesting what is the TV A va.. Perspective is I guess I'm trying to think of the elements that that would happen. Is what tools do you need. How much time do you need? What angles are going to be the the best? Not only I guess reach what you WanNa reach but then not bump anything along the way. These are all things that you're considering. What can you hold onto? Can't you hold onto. Yeah Okay Okay so I think how we're GONNA get there. Are you approaching the worksite. robotically or they climbing on the hardware. That's next to ams came we install a foot restraint grant somewhere near it to get the crew member to where they need to be so it was much broader than just the EV operations community. They had to bring in robotics and other folks so there was a lot of a lot of people to talk to and then just starting to identify requirements. And how. What was the base tools that we needed to build? And some of the first ones were We have to install handrails we never going to remove all these non captive fasteners. That Brown was talking about that. We brought in to help And then where are these handrails GONNA go. What would be the best location for that crew? Approach this worksite. Okay yeah that's GonNa be one of the top things is actually getting simple. Of course you just go to the worksite. Well worksites already designed for us and we're tested on the ground and launched this time around. We had to do all that work with the hardware on orbit and created. Okay so I guess number one would be access you want you want access to the Msu want ways that you can actually reach what you want to reach so naturally actually handrails would be one of those things and a handrail. I guess is just. It's just something you grab onto an a dozen pull. Anything were affect anything when you're grabbing grabbing onto literary that's number one All the loads underneath it right. You can't stick a handrail on any old piece of hardware. It has to be able to sustain the lows president suited for massive via crew member can impart into that structure below it. So you don't want them ripping the handrail off the side of ems that would be bad so the MS engineers. Here's how to help with that. And Denna fine those locations of where we could put the handrail and then. Brian seem had to go off. And say you know what that's great but we actually need it over in this location. Because that's where the crew is going to be from a worksite perspective and then the tools engineers would go off figure out. Well we see the structure that's available to us. How can we create an interface? The meets all the loading concerns and allows the crew member to be able to handle the item itself. See Right there. That's where it gets super complicated right because you have a need right. Hey Brian you wanna you WanNa your need is I want this handrail to be where it is easiest to actually complete the task but the scientists saying no. It's going to you know break. A A certain piece of equipment is going to is not going to be able to handle the load of the person that's actually putting their whole body weight on that. So where do you find those happy mediums. How do you how do you work with those teams to make.

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