Conveyor Transfer Chute: Discharge Trajectory & Chute Angle (2D)

This 2D companion strips the 3D transfer chute down to the mechanics that actually decide whether one works: the head-pulley discharge trajectory (the classic low-speed vs. high-speed discharge problem from bulk-material handling), the parabolic fall onto the chute plate, and a real slide-or-stall check along the chute using the material's friction angle. Drag the belt speed and pulley radius sliders and watch the leave point travel around the pulley face; push the chute angle below the selected material's friction angle and the stream visibly stalls partway down and piles up instead of flowing through — the actual failure mode transfer chutes are designed around, and the reason real chute designs add a safety margin above the material's angle of repose.