Recently, the youtuber JoergSprave released a new video, where he built a bow capable of firing an arrow unpracticed at full power every second, as opposed to his initial 1 every 4 seconds. He does this by building the quiver into the bow itself so as you pull back the string, an arrow in pushed into its launch.
I want to know, is this weapon feasible for medieval combat? That is, it is realistic for a army to built, train and use this design in an actual battle? If not, how close can we get?