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Vuelo de libélula: nuevos usos de flujos separados inestables
Science (New York, N.Y.)
|June 14, 1985
Resumen
Las libélulas generan fuerzas de elevación significativas a través de interacciones flujo-ala inestables, utilizando principios aerodinámicos complejos. Esta investigación pone de relieve los nuevos mecanismos de vuelo de los insectos y las posibles nuevas aplicaciones de la dinámica de fluidos.
Área de la Ciencia:
- La aerodinámica es muy importante.
- Dinámica de fluidos La dinámica de fluidos.
- Biomecánica de los insectos.
Sus antecedentes:
- El vuelo de insectos se basa en una sofisticada generación de elevación aerodinámica.
- Comprender estos mecanismos puede revelar nuevos principios de la dinámica de fluidos.
Objetivo del estudio:
- Para medir las fuerzas de elevación en las libélulas durante el vuelo.
- Para correlacionar el movimiento del ala y los campos de flujo con la generación de elevación.
- Para investigar el papel de las interacciones flujo-ala inestables.
Principales métodos:
- Atando libélulas a una balanza de fuerza para medir la elevación.
- El uso de la fotografía estroboscópica para las vistas stop-action del movimiento del ala.
- Analizar las estructuras del campo de flujo y correlacionarlas con la cinemática del ala.
Principales resultados:
- Se registraron grandes fuerzas de elevación durante los episodios de vuelo de la libélula.
- La generación de elevación estaba directamente relacionada con las interacciones flujo-ala inestables.
- Se observaron campos de flujo dominados por vórtices y se correlacionaron con la elevación.
Conclusiones:
- Las libélulas emplean flujos separados inestables para una producción eficiente de elevación.
- Estos hallazgos sugieren una nueva clase de aplicaciones dinámicas de fluidos inspiradas en los insectos.
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