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Is there an example abstract / report?Sure! You can find examples from previous editions here: Abstract - Seakings (2023) - Unsinkable 8 (2023) - E&E (2023) - Orein (2023) - Otrio (2024) - FloWiCS (2024) - First Penguins (2024) Report - Unsinkable 8 (winners of the written report 2023) - Helixa (2023) - Wind Over Waves (2023) - Orein (2023) - Wadatsumi (co-winners of the structure 2024) - FloWiCS (co-winners of the structure 2024) - Avel-vor (winners of the written report 2024)
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Should the report focus on the small scale prototype of the full scale version?The criteria for the report are: Power generation efficiency (Efficiency losses caused by dynamic wind/wave interaction) - 20pts Structural integrity (Support structure design) - 20pts Foundation stability (FOU - Foundations/anchors and moorings) - 20pts Practicality of construction at full scale (T&I - Transport and Installation) - 20pts Cost efficiency at full scale (Materials & fabrication cost) - 20pts Items 1 to 3 should be covered at prototype scale and items 4 & 5 should be covered at full scale. The small scale prototype and the full scale version should have the same design principles. To evaluate the design and costs at full scale, please use date from the 15MW NREL reference turbine and the offshore site location found here: NREL 15MW reference turbine Reference floating platform
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How is the scoring evaluated for the structure?Below is a table to guide the scoring process
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How do you evaluate cost efficiency at full scale?The small scale prototype and the full scale one to evaluate cost efficiency should have the same design principles. To evaluate the design and costs at full scale, please use date from the 15MW NREL reference turbine and the offshore site location found here: - NREL 15MW reference turbine - Reference floating platform
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What are the turbine characteristics?You can find details of the turbine using this link Other details: Weight: approx. 6.5kg (centred above the tower connection) Power curve shown on the link above (although we recommend that you perform tests yourself). Thrust curve shown below - tested by the Unsinkable 8 in the 2023 edition Yaw system included in turbine. Controller included with the turbine The unload mechanism of the controller puts a break on how fast the turbine can spin once the connected 12V battery is fully charged to prevent overcharging.
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What will be the wind & wave conditions?We cannot predict the weather for the competition day, but there are several online sources that can help you for your design. We recommend checking surf websites as they focus on the wave conditions close to the shoreline. https://wisuki.com/statistics/965/zeebrugge
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What is the water depth?The minimum water depth will be 1m, but groups can install their structure up to a depth of 2m. We recommend using geopunt.be to access bathymetry maps of the site.
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What are the soil conditions?Sandy soil conditions with shell fragments. Sieve test results performed by KULeuven campus Bruges.
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How much time will we have for installation?We estimate that groups will need approximately 2h for installation of their structures at sea. Note that transport and installation aspects are part of the evaluation criteria, so groups with efficient procedures will gain an advantage on this aspect.
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How is power efficiency measured?A monitoring system will be installed on the beach which monitors the electricity output of all teams. This monitoring system consists of a 12V battery and volt+ammeters to compare the power output of the different turbines. Electrical wires will be installed between the monitoring system and the floating wind structures to transport electricity. It is important that you securely attach the wind controller (included in purchase of the wind turbine) to your floating wind support structure and that we can easily connect electrical wires. We will protect the cable connection with heat shrink to provide some level of water resistance.
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Are there criteria for the tower of the structure?The tower structure is open for participants to design but the hub height needs to be 120cm ±10cm above water line.
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Can we make a 2 turbine design?Yes, starting with the 2025 edition we will allow for 2 turbine floater design. Note that we only supply 1 turbine to the participants who are selected for funding.
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Is active stabilisation allowed?Yes
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