The Subsonic Ultra Green Aircraft Research (SUGAR) Truss-Braced Wing (TBW) aeroservoelastic (ASE) wind-tunnel test was conducted in the NASA Langley Transonic Dynamics Tunnel (TDT) and was completed in April, 2014. The primary goals of the test were to identify the open-loop flutter boundary and then demonstrate flutter suppression. A secondary goal was to demonstrate gust load alleviation (GLA). Open-loop flutter and limit cycle oscillation onset boundaries were identified for a range of Mach numbers and various angles of attack. Two sets of control laws were designed for the model and both sets of control laws were successful in suppressing flutter. Control laws optimized for GLA were not designed; however, the flutter suppression control laws were assessed using the TDT Airstream Oscillation System. This paper describes the experimental apparatus, procedures, and results of the TBW wind-tunnel test. Acquired system ID data used to generate ASE models is also discussed.2 study.
Aeroservoelastic Wind-Tunnel Test of the SUGAR Truss Braced Wing Wind-Tunnel Model
2015
28 pages
Report
Keine Angabe
Englisch
Aircraft , Test Facilities & Equipment , Aerodynamics , Aeroservoelasticity , Wind tunnel tests , Subsonic aircraft , Trusses , Angle of attack , Flutter , Boundaries , Control theory , Vibration damping , Noise reduction , Struts , Performance tests , Thin wings , Fixed wings , Oscillations , High reynolds number , Transonic wind tunnels , Scale models , Mach number , Aerodynamic characteristics
Aeroservoelastic Wind-Tunnel Test of the SUGAR Truss Braced Wing Wind-Tunnel Model (AIAA 2015-1172)
British Library Conference Proceedings | 2015
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