[PDF] Top 20 An experimental study of low-velocity impacts into granular material in reduced gravity

... made of the penetration depth of an impactor on an asteroid ...aim of investigating planetesimal growth and planetary ring dynamics, Colwell & Taylor ( 1999 ) and Colwell ( 2003 ) ... Voir le document complet

... aim of investigating planetesimal growth and planetary ring dynamics, Colwell & Taylor ( 1999 ) and Colwell ( 2003 ) stud- ied micro-gravity collisions into granular surfaces over the ... Voir le document complet

... Design of the surface container, release mechanism, and projectile The surface container sub-assembly comprises of three parts: the surface container, the release mechanism, and the ...walls of the ... Voir le document complet

... bulence. Experimental set-up. – The experimental setup is similar to the one used in ...consists in a square plas- tic vessel, L = 20 cm side, filled with mercury up to a height h = 18 ... Voir le document complet

... resistance of the wet granular material depending on the capillary forces in ...play. In the same context, numerical simulations are carried out in this chapter by the use ... Voir le document complet

... Knowledge of the mechanical properties of regolith are important for understanding the evolution of small body surfaces, and for the design of future space missions that plan to interact with ... Voir le document complet

... Knowledge of the mechanical properties of regolith are important for understanding the evolution of small body surfaces, and for the design of future space missions that plan to interact with ... Voir le document complet

... report an experimental study on three-wave interactions of capillary-gravity waves in a closed ...means of a spatio-temporal measurements, we verify that the spatial reso- ... Voir le document complet

... around in Egypt as early as the pre-dynastic period, where a vent of some nature that faces north to catch the cool prevailing ...successfully in low-rise housing for ...dust in ... Voir le document complet

... (illustrated in Fig. 8). The curves are similar in shape to those shown for run A1 ...peak in the force curve (which occurs at the same time that peak pressure is reached, t = 35 ms) is more clearly ... Voir le document complet

... regions of crystallisation (grains) and regions of disorder (grain boundaries) found ...inherent experimental and tracking errors, particle velocities are not a meaningful variable to ...true ... Voir le document complet

... dynamics of primary pro- ductivity in Lake Tanganyika during ...number of factors, including the fact that a uniform wind stress was assumed over the whole lake, and that nutrient inputs from rain ... Voir le document complet

... Low velocity impact damage in composites is insidious due to the invisible damages they can ...strength of composite structure, for instance in compression after ...under low ... Voir le document complet

... Abstract An increasing number of industrial applications rely on low power embedded devices because of their flexi- ...Fortunately, low power, and slow channel hopping MAC help to cope ... Voir le document complet

... under low gravity conditions to place satel- lites on different ...under study for next gen- erations of the rocket ...however an im- portant limitation. After some period of ... Voir le document complet

... DISPOSITIF EXPERIMENTAL ET PROTOCOLE D’ESSAI Nous avons définit dans la partie précédente différentes expressions permettant d’appréhender la stabilité d’une seule particule immergée dans un fluide à ... Voir le document complet

... block of poly(butyl ...copolymers of methyl methacrylate (MMA) and N, N-dimethylacrylamide (DMA) can be used as a miscible block for the DGEBA system to enhanced the dispersion of this block ... Voir le document complet

... description Low velocity impact tests have been performed with a drop tower device (Figure ...mass of the impactor is 2 kg. It is hemispherical with a diameter of 16 ...size of 100 × ... Voir le document complet

... observation, in apparent contradiction with the one at lower velocity. In particular, we cannot exclude that differences between spectra could be associated with different flow ...contribution ... Voir le document complet

... Most of the other studies concerned with vortices in non- Newtonian fluids are devoted to the different regimes in the flow past a ...regimes. In order to study the influence of ... Voir le document complet