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pro vyhledávání: '"Ring vortex model"'
Autor:
Chen, Chang
A helicopter rotor in descent flight encounters its own wake, resulting in a doughnut-shaped ring around the rotor disk, known as the Vortex Ring State (VRS). Flight in VRS condition can be dangerous as it may cause uncommanded drop in descent rate,
Externí odkaz:
http://hdl.handle.net/1853/11535
