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okay to tell us more how they are leveraging the NI platform to test and validate the autonomous Dream Chaser spacecraft please welcome to the stage Stefan Keeley from the Sierra Nevada Corporation hey Stepan good morning alright let's get started by telling the audience about Sierra Nevada SMC is a team of nearly four. Thousand scientists cybersecurity experts software engineers and former military leaders providing variety of electromechanical electronics and fully integrated systems to government and commercial aerospace companies everything from micro satellites to telemedicine solutions and small actuators to the Dream Chaser vehicle that you just. Saw our well The Dream Chaser is certainly an incredible application tell us about the vehicle and its mission the Dream Chaser is a reusable space vehicle designed for a number of low Earth orbit that's right we can bring a payload we can bring a payload from the International Space Station to a lab on the. Ground faster and at fewer g's the most other options for a climate-controlled experiments or sensitive pallets this will be the difference between mission success. And failure all right. If we wanted to succeed and so let's talk about the let's talk about why NASA selected the Dream Chaser so NASA my understanding. From our conversations is that NASA. Selected the Dream Chaser in part because of some differentiation that you gain from the folding wing design and the ability. To land on runways worldwide and we just talked about that being able to bring the Dream Chaser from the International Space Station to a runway that's close to the target lab helps to get the experiments back faster if there are. Sensitive is that. Right that's absolutely. True okay the innovative folding wing design allows the Dream Chaser to fit on a variety of current and future launch vehicles as well as the land on runways worldwide okay so now the Dream Chaser is a really complex design and in my mind. That 2020 first mission date it doesn't sound that far away so how is ni helping you. To reach that target it is a complex design and with any design we work hard to identify and address risks as early in the in the process as possible the flexibility of the NI platform has allowed us to use it throughout this process we start by taking the individual components ensuring they're fully functional. And that they'll meet all the requirements of the difficult space environment then we integrate these into subsystems and assemblies which we test further to verify that they or two are functional and that the individual components still. Meet their key performance indicators finally to ensure the Dreamchasers mission ready we incorporate all of these into the final vehicle which then undergoes. Its own intensive test campaign okay so Stefan on this spectrum from component level tests to full system test. Campaigns give us an example of a test challenge that you had to overcome yeah the size and complexity of the Dream Chaser vehicle tries us to acquire for some tests thousands of measurement channels and it's critical these channels be synchronized so that we. Can compare these back to our models and validate our design tests like these generally required lots of instrumentation and complex and synchronization schemes that may take many months. To make work as an example one of our tests requires us to verify the structural design of. Vehicle for both on-orbit and launch loads in the space environment if we can't get accurate. And synchronized stress and strain data from our pressure test article then we can't identify potential risks in the design these tests can be expensive and these these tests could be very expensive to run if we get bad data so we want. To make sure we get it right the first time okay so you needed an easier way to synchronize thousands of channels of data across a distributed system in order to validate the Dream Chaser spacecraft how did you get it done that's very Chad and to overcome this challenge we use compact DAC with TSM this. Allowed us to place our instruments closer to our measurement sources and acquire thousands of channels of the accurate and synchronized strain data because we were using TSN all this data was synchronized use of the NI platform allowed us to implement an accurate and cost-effective solution while accelerating vehicle testing now and in the future all right so. It's great to hear that you're able to take advantage of our increased platform investment in synchronized measurements across a distributed system and it sounds. Like you're well on your way to reach you that first milestone in 2020 have you thought about what's an expert dream chaser after that absolutely Chad our current mission with NASA is by no means the end. Of the dreamchaser but rather just. The beginning the Dream Chaser can be used as a platform for launch servicing and repair of satellites can also be used as a scientific observation platform as we explore. The possibilities for the Dream Chaser vehicle we're confident that a nice solution will continue to help us meet future missions faster all right that sounds fantastic I'm just kind of sad that we weren't able to get the engineering model of the dream case are up here on the stage to. Share with the audience today well I have a number of mini dream chasers with me I think there's a couple over here too let's take a look well these are they're pretty small they're kind of light I don't know how far they'll. Fly but I bet we could launch a few of them into the audience let's see let's go here we go right we gotta have some fun on the keynote stage thanks Stefan Thank.

 


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