Abstract
We explore the dynamically driven double-degenerate double-detonation channel of type Ia supernovae (SNe Ia) in three-dimensional hydrodynamical simulations, incorporating a 19-isotope nuclear network inline with the hydrodynamics to capture the nuclear energetics. We show that while a detonation in the helium layer of the primary hybrid white dwarf is evident from our simulations, a second detonation in the carbon-oxygen core is not established. This failed second detonation has possible observable implications for rapid .Ia-like transients, as well as for the population of galactic hypervelocity white dwarfs, as well as the SN Ia mechanism.