Smart Aerodynamic Surface for a Typical Military Aircraft Using Shape Memory Elements
| Autor: | S. Jayasankar, P. Senthil Kumar, B. Varughese, B. Ramanaiah, S. Vishwanath, H. V. Ramachandra, G. N. Dayananda |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Journal of Aircraft. 48:1968-1977 |
| ISSN: | 1533-3868 0021-8669 |
| DOI: | 10.2514/1.c031391 |
| Popis: | the landing characteristics of the aircraft on the aircraft carrier. The mousche is designed and constructed out of carbon-fiber-reinforced plastic to withstand the full load and is deployed using the actuator bank containing the arrays of shape memory alloy elements. The shape memory alloy actuator bank moves a distance of 15 mm while generating a net actuator force of over 2000 kg. This force is used to deploy the additional aerodynamic surface measuring 790 215 32 mm against a simulated lift and drag load acting simultaneously, i.e., a resultant lift load of 331.6 kg and a drag load of 33.16 kg acting at the center of gravity of the mousche. The shape memory alloy bank consists of 138 wires of about 1 mm in diameter and 650 mm in length. The actuation of these 138 wires is electronicallyandmechanicallysynchronized.Themouschehasbeenanalyzedusing finiteelementmethodcodesfor the combined lift and drag load. Experimental and analysis values have matched well. The electronics circuit assembly of the smart actuator drive electronics that powers the shape memory alloy actuator bank has been designedanddevelopedintheformofmother-anddaughterboards.Eachdaughterboardhassixminiaturizeddc–dc converters, and the required power and control signals are routed to the motherboard. The smart actuator drive electronics have been integrated to carry out the full load test. The National Instruments 6009 data acquisition modulealongwithgraphicaluserinterfacesoftwareLabVIEWareusedtoconducttheexperimentsandtoeffectthe closed-loop position control of the mousche. |
| Databáze: | OpenAIRE |
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