Superpropulsion of Droplets and Soft Elastic Solids

Abstract : We investigate the behavior of droplets and soft elastic objects propelled with a catapult. Experiments show that the ejection velocity depends on both the projectile deformation and the catapult acceleration dynamics. With a subtle matching given by a peculiar value of the projectile/catapult frequency ratio, a 250% kinetic energy gain is obtained as compared to the propulsion of a rigid projectile with the same engine. This superpropulsion has strong potentialities: actuation of droplets, sorting of objects according to their elastic properties and energy saving for propulsion engines.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 2017, 119, pp.108001. 〈https://doi.org/10.1103/PhysRevLett.119.108001〉. 〈10.1103/PhysRevLett.119.108001〉
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-01584717
Contributeur : Christophe Raufaste <>
Soumis le : samedi 9 septembre 2017 - 08:16:31
Dernière modification le : jeudi 3 mai 2018 - 13:34:26

Fichiers

Drop_Catapult_hal.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Christophe Raufaste, Gabriela Ramos Chagas, Thierry Darmanin, Cyrille Claudet, Frédéric Guittard, et al.. Superpropulsion of Droplets and Soft Elastic Solids. Physical Review Letters, American Physical Society, 2017, 119, pp.108001. 〈https://doi.org/10.1103/PhysRevLett.119.108001〉. 〈10.1103/PhysRevLett.119.108001〉. 〈hal-01584717〉

Partager

Métriques

Consultations de la notice

126

Téléchargements de fichiers

150