Propeller Product Description

    A propeller consisting of a hub and a plurality of blades fixed radially to the hub, commonly known as a vane. The propeller is installed below the stern waterline, and the host receives power to rotate, pushing the water toward the ship, and pushing the ship forward by the reaction force of the water. The propeller is simple in construction, light in weight and high in efficiency, and is protected below the waterline.

    Ordinary transport ships have 1~~2 propellers. The propeller generally has 3~~4 blades. The diameter is determined according to the horsepower and draught of the ship. The lower end does not touch the bottom of the water, and the upper end does not exceed the full water line. The propeller speed should not be too high, and the speed of the small speedboat can reach 400-500 rpm. The material of the propeller is generally made of a bronze or a corrosion-resistant alloy, or stainless steel, nickel-aluminum bronze or cast iron.

    The marine propeller can be seen as a "wing" that rotates on one side and advances on one side. The flow of water through the various sections of the blade creates a forward force. Take a very small section at both propeller radii r1 and r2 (r1 < r2) to discuss the airflow over the blade. V—axial speed; n—propeller speed; φ—air flow angle, that is, the angle between the airflow and the propeller rotation plane; α—blade angle of attack; β—blade angle, that is, the angle between the chord of the blade section and the plane of rotation . It is obvious that β = α + φ. When the air flows through the small sections of the blade, the aerodynamic force, the resistance ΔD and the lift force ΔL are generated, and the total aerodynamic force after the synthesis is ΔR. The component force of ΔR in the flight direction is the pulling force ΔT, and the force ΔP opposite to the direction of rotation of the rotary propeller prevents the propeller from rotating. In this way, a larger pulling force is obtained, a smaller resistance is obtained, thereby increasing the efficiency, and the airflow angle actually reflects the ratio of the forward speed to the tangential speed.

    A propeller consisting of a hub and a plurality of blades fixed radially to the hub, commonly known as a vane. The propeller is installed below the stern waterline, and the host receives power to rotate, pushing the water toward the ship, and pushing the ship forward by the reaction force of the water. The propeller is simple in construction, light in weight and high in efficiency, and is protected below the waterline.

    Flishpropeller is produced through a process that is strictly prohibited. Whether it is material selection, overall geometric design, product testing and production, it is to enhance the performance of the propeller, better adapt to navigation conditions and make full use of host power. Flishpopeller's design uses CAD, CAM and CAE technologies to ensure product safety and reliability.