Minecraft wiki entry for Elytra, associated text: Elytra have a minimum speed of about 7.2 m/s (obtained by gliding at the altitude cap with a strong upward pitch of 30°). If the diver drops to 0 speed, they quickly get accelerated back up to at least this minimum. The diver can increase speed by choosing to descend faster, but afterward, they do not regain nearly as much altitude. In the real world, drag increases with speed, and drag, in turn, slows the aircraft; Minecraft mimics this. To glide from cliff to cliff, a player's best bet is to aim slightly above the horizon.