Print Email Facebook Twitter Long-Term Laddermill Modeling for Site Selection Title Long-Term Laddermill Modeling for Site Selection Author Lansdorp, B. Ruiterkamp, R. Williams, P. Ockels, W.J. Faculty Aerospace Engineering Department Aerodynamics & Wind Energy Date 2008-08-01 Abstract Non-powered flight vehicles such as kites can provide a means of transmitting wind energy from higher altitudes to the ground via tethers. At Delft University of Technology, construction and testing of such a high altitude wind machine is ongoing. The concept is called the Laddermill. It generates energy by pulling a line under high tension from a drum with a kite and retrieving it under low tension. The change in tension is achieved by changing the angle of attack and flight pattern of the kite. This paper presents a modeling and optimization approach that can be used to help design Laddermill systems for particular sites around the world. Some crude assumptions are used to derive the average power that can be produced by a Laddermill system, taking into the most important system parameters. Historical wind data is used to size the kite and cable diameter needed to produce a 1 MW machine for the least cost. To reference this document use: http://resolver.tudelft.nl/uuid:d7a36d8b-48d6-4dac-a35c-b4d2aabb381b Publisher American Institute of Aeronautics and Astronautics Source AIAA Modeling and Simulation Technologies Conference and Exhibition, Honolulu, Hawaii, 18-21 August, 2008 Part of collection Institutional Repository Document type conference paper Rights (c) 2008 The Author(s) Files PDF Ockels.pdf 1.22 MB Close viewer /islandora/object/uuid:d7a36d8b-48d6-4dac-a35c-b4d2aabb381b/datastream/OBJ/view