Self-assessment explain how something is made organise a description talk about 3D printing write a proposal talk about the future of industry write a leaflet give a detailed presentation on a familiar topic write an article 89 Language skills Extras Explore 6 Production and industry The new solar arrays will be a larger version of the Roll-Out Solar Array (ROSA) technology that successfully demonstrated the mechanical capabilities of solar array deployment during its test on the space station in June 2017. The new solar arrays will be positioned in front of six of the current arrays, and will use the station’s existing infrastructure. This approach is similar to the one used to upgrade the station’s external television cameras to high definition, using the existing power and control mechanisms. The new arrays will shade slightly over half of the length of the existing arrays and will be connected to the same power system to augment the existing supply. The eight current arrays are capable of generating up to 160 kilowatts of power during orbital daytime, about half of which is stored in the station’s batteries for use while the station is not in sunlight. Each new solar array will produce more than 20 kilowatts of electricity, eventually totalling 120 kilowatts (120,000 watts) of new power during orbital daytime. In addition, the remaining uncovered solar array pair and partially uncovered original arrays will continue to generate approximately 95 kilowatts of power for a total of up to 215 kilowatts (215,000 watts) of power available to support station operations at completion. For comparison, an active computer and monitor may use up to 270 watts, and a small refrigerator uses about 725 watts. The solar arrays began to be delivered to the International Space Station in pairs by the SpaceX Dragon cargo spacecraft in 2021, when the second pair of current arrays reached the 15th year of its design life. The installation of each solar array requires two separate astronaut spacewalks: one to prepare the worksite with a modification kit and another to install the new solar array. 0 What functions do the solar panels fulfil? 1 Apart from scientific work, what other areas has NASA made the space station available for? 2 What type of degradation can be seen on the arrays? 3 Which companies are responsible for the production of the new arrays? 4 How do the new arrays compare to the older ones? 5 What else was upgraded using almost the same procedure? 6 From where is power drawn during orbital night time? 7 What special missions are needed to ready the space station for the new arrays? Produce electrical power Nur zu Prüfzwecken – Eigentum des Verlags öbv
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