In order to study the aerodynamic performance of the quadrotor with different rotor spacings in hover. experiments were performed together with numerical simulations. For experimental study. an experimental platform was designed to measure the thrust and power consumption of the quadrotor with different rotor spacings (L/R = 2. https://www.markbroyard.com/super-value-krowne-18-x84-back-bar-drain-board-and-sink-sale-limited-save/