dc.contributor.authorSong, Yifan
dc.date.accessioned2016-03-23T06:53:35Z
dc.date.available2016-03-23T06:53:35Z
dc.date.issued2016
dc.identifier.urihttp://hdl.handle.net/10356/66309
dc.description.abstractThis project presents a basic wind tunnel investigation on aerodynamics of ram-air parafoils. Previous studies are summarized through detailed literature reviews, and key parameters for a generic parafoil such as airfoil shape, inlet opening cut, arc-anhedral angle, chord and aspect ratio, and cells are identified. A model support mechanism coupled with a 6-component load cell balance system is designed and validated. The aerodynamic characteristics of five ram-air parafoil models at airspeed of 20 m/s, 30 m/s and 40 m/s are obtained by conducting low speed wind tunnel tests in Temasek Lab, NUS. Some necessary flow visualization studies are also performed. Results of the investigations show the inlet opening cut has fewer effects on aerodynamic coefficients. The arc-anhedral wing is able to reduce flow separation from center to wing tip along the span. The troughs on canopy caused by inflation can also weaken the flow separation. With a flap deflection of 12 degrees, an efficiency of about 122% in lift generation and an increase of about 0.61 in coefficient of Uft are found.en_US
dc.format.extent90 p.en_US
dc.language.isoenen_US
dc.subjectDRNTU::Engineering::Aeronautical engineeringen_US
dc.titlePreliminary study on the aerodynamics of parafoilsen_US
dc.typeThesis
dc.contributor.supervisorAsst prof. New Tze How, Danielen_US
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.description.degreeMaster of Science (Aerospace Engineering)en_US


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