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Design and testing of a full span aeroelastic wind tunnel model
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg.ORCID-id: 0000-0003-2391-641X
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, Flygdynamik.ORCID-id: 0000-0002-3199-8534
2017 (engelsk)Inngår i: 17th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2017, International Forum on Aeroelasticity and Structural Dynamics (IFASD) , 2017Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

An aeroelastic wind tunnel model has been designed and built for testing in the Transonic Dynamics Tunnel. The aircraft configuration represents a modern light weight fighter with a swept wing and canards. The model is designed using composite materials for all lifting surfaces and the fuselage shell. The lifting surfaces are attached to an internal backbone structure using aluminum spars and bulkheads to transfer the aerodynamic loads to the sting. The wing design is also made with a strong internal frame to provide strong support for external stores without giving too stiff overall wing properties. External stores interfaces in the form of pylons, sway braces and pre-tension arrangements are modeled with additional detail to provide realistic kinematics. The model is heavily instrumented with accelerometers, strain gauges, and pressure taps. A unique feature of the test set-up was the use of an optical motion tracking system that made it possible to accurately measure model deformations during wind tunnel testing. A new system for unsteady pressure measurements was also used for the test providing accurate unsteady pressure data from almost 200 pressure taps on the wing surfaces. Wind tunnel testing was performed both in air and heavy gas with the model tested in three different configurations. A large amount of unique data was obtained for both static and dynamic aeroelasticty with simultaneous measurements of model deformation and wing surface pressures. 

sted, utgiver, år, opplag, sider
International Forum on Aeroelasticity and Structural Dynamics (IFASD) , 2017.
Emneord [en]
Aeroelasticity, Flutter, Transonic, Wind tunnel, Deformation, Elastic waves, Fighter aircraft, Flutter (aerodynamics), Lift, Pressure measurement, Structural dynamics, Supersonic aircraft, Swept wings, Transonic aerodynamics, Tunnels, Wind stress, Aircraft configurations, Optical motion tracking, Simultaneous measurement, Transonic dynamics tunnels, Unsteady pressure measurements, Wind tunnel modeling, Wind-tunnel testing, Wind tunnels
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Identifikatorer
URN: urn:nbn:se:kth:diva-236792Scopus ID: 2-s2.0-85048602227ISBN: 9788897576280 (tryckt)OAI: oai:DiVA.org:kth-236792DiVA, id: diva2:1273753
Konferanse
17th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2017, 25 June 2017 through 28 June 2017
Merknad

QC 20181221

Tilgjengelig fra: 2018-12-21 Laget: 2018-12-21 Sist oppdatert: 2018-12-21bibliografisk kontrollert

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Ringertz, UlfEller, David

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Totalt: 142 treff
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