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Meccanismi di risparmio energetico delle oche volanti del Canda durante la migrazione
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ISBN10: 6208974755
ISBN13: 9786208974756
Publisher: Edizioni Sapienza
Published: Jun 18 2025
Pages: 52
Weight: 0.18
Height: 0.12 Width: 6.00 Depth: 9.00
Language: Italian
ISBN13: 9786208974756
Publisher: Edizioni Sapienza
Published: Jun 18 2025
Pages: 52
Weight: 0.18
Height: 0.12 Width: 6.00 Depth: 9.00
Language: Italian
Abbiamo stimato il meccanismo di volo dell'oca canadese utilizzando un modello di braccio a due articolazioni con prestazioni aerodinamiche instabili per esaminare quanta energia può essere risparmiata durante la migrazione. Dalle distribuzioni di velocità e pressione sull'ala, abbiamo determinato che un'oca può risparmiare circa il 15% dell'energia riducendo la resistenza aerodinamica modificando la morfologia dell'ala. Dal campo del flusso d'aria nella scia, abbiamo determinato che un'oca dietro può risparmiare circa il 16% della sua energia sfruttando la potenza indotta da una coppia di vortici di vantaggio a spirale tridimensionale (FAV) in formazione a V. Abbiamo dedotto quantitativamente che la profondità ottimale era di circa 4 m dalla punta dell'ala dell'oca che precede e che la WTS ottimale era compresa tra 0 e -0,40 m nella sezione spanwise. La differenza di fase del flappeggio tra l'oca che precede e quella che segue è stata stimata in circa 90,7 per sfruttare efficacemente il beneficio aerodinamico causato dalla FAV. I nostri risultati dimostrano che l'uso del meccanismo aerodinamico instabile nel volo migratorio con flapping non è limitato a uccelli grandi e pesanti con flapping ad alta velocità , ma può essere applicato anche a mini o micro veicoli aerei (MAV) come i veicoli spia con flapping.
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