Dynamical and collisional evolution of Halley-type comets

► Catastrophic collisions with planetesimals do not disrupt Halley-type comets. ► Cumulative small collisions with planetesimals do not disrupt Halley-type comets. ► Cometary dust mantle from impacts with small asteroids is less then 2 cm thick. ► Planetesimals do not significantly influence Halley-type comets.