Paddle

About: Paddle is a research topic. Over the lifetime, 5649 publications have been published within this topic receiving 28389 citations.

Parallel action jogger

Abstract: A paper jogging device is disclosed for stacking sheets of paper or the like into precise alignment directly onto a shipping skid. The device employs a jogger paddle that is flexibly attached to a rigid supporting means, and that is driven so as to be vibrated back and forth over its entire surface. The drive means comprises a plurality of thrust members which are actuated by a pair of synchronized rotating eccentrics employing a novel modified "scotch-yoke" coupling mechanism. The novel features of the jogging device are, (1) the entire surface of the paddle moves back and forth simultaneously, (2) the forward motion terminates at a predetermined fixed position with reference to the supporting means, (3) the acceleration and deceleration of the paddle is a simple harmonic motion requiring minimum driving power, and (4) the entire operation is very quiet.

Screw, power component and aircraft

Abstract: The utility model discloses a screw, power component and aircraft. The screw includes propeller hub and paddle, and the paddle is connected on the propeller hub. The paddle includes the blade root, deviates from the blade tip of blade root, the pressure face, with the suction surface of the pressure facial features back of the body. The blade tip extends towards the lopsidedness that the pressureface belonged to along paddle span -wise's direction. Be the 100% radial department of screw at the center apart from the propeller hub, the distance between the horizontal plane that wing section rotation center that the horizontal plane at the wing section rotation center place of paddle and the center apart from the propeller hub are the paddle of the 50% radial department of screw belonged tois a screw radial 3.0% to 9.3%, consequently, prescribe a limit to to possess the paddle of specific shape by above -mentioned parameter, aerodynamic drag that the screw that adopts the paddle can reduce the screw on the one hand puies forward high -tension and efficiency, increases the flight performance of the distance of boat then in order to improve the aircraft of aircraft, and on the other hand can reduce the noise that the paddle produced at the during operation for the aircraft is quieter when hovering, has improved user experience.

Vertical agitating apparatus

Abstract: Provided is a vertical agitating apparatus which can shorten the time of vertically uniform mixing, uniformalize flow rates in the vertical direction, and shorten the time of heat transmission in a deep liquid agitating tank, an agitating tank having a conical bottom part with an acute apex angle of less than 60 deg. or in a tank combination of the former two tanks, and in which a rotary shaft is arranged in the tank so as to be rotatable by a drive located outside of the tank, bottom paddle blades having a large area are attached to the lower part of the rotary shaft, and lattice blades in combination of vertical grids and horizontal arms are provided to the rotary shaft above the bottom paddle blades, the distance between the outer edge of the vertical blades at the outermost end of the lattice blade and the center of the rotary shaft being set so as to be greater than that of the bottom paddle blades.