This high-efficiency 9-inch multi-rotor propeller pair comes matched as a complete set containing one Clockwise (CW) and one Counter-Clockwise (CCW) blade structure. Designed with a performance profile designated alternately as 0947, 9047, or 9x4.7, these props feature a 9-inch diameter combined with a broad 4.7-inch aerodynamic pitch curve. They are the baseline standard lifting elements for mid-sized hobby drones, custom aerial photography platforms, and standard F450 / F550 multi-rotor quadcopter builds.

Specification

• Model Geometry Designation: 9047 / 0947 / 9x4.7
• Propeller Diameter: 9 inches (approx 228.6mm)
• Thread Pitch Profile: 4.7 inches (approx 119.3mm per revolution travel distance)
• Rotational Orientation: 1x CW (Clockwise / Right-Hand Rotation) + 1x CCW (Counter-Clockwise / Left-Hand Rotation)
• Material Composition: Carbon fiber reinforced nylon / High-impact composite polymer
• Center Hub Thickness: approx 7.5mm
• Base Center Shaft Hole: approx 6.0mm to 8.0mm (Variable depending on batch)
• Adapter Ring Set Included: Ships with a plastic tree array of inner diameter adapter sizing rings (typically 3mm, 3.17mm, 4mm, 5mm, and 6mm)
• Recommended Motor Pairing: 2212 / 2213 / 2216 Brushless Outrunner Motors (800 KV to 1100 KV range)
• Target Battery Matrix Compatibility: 3S (11.1V) or 4S (14.8V) LiPo battery banks

Features

• High-Impact Reinforced Composite Body: Molded using dense, carbon-reinforced nylon sheets that minimize blade flexing under high RPM acceleration cycles. This keeps the aerodynamic profile stable, reducing structural vibration and preventing motor stalling.
• Optimized Low-Speed Thrust Winglets: The wide blade profile and high-camber curvature are specifically sculpted to move large volumes of air efficiently at lower RPM thresholds. This translates directly to extended battery life during steady, non-aggressive flights.
• Precision Hub Centering Ring Array: Packed with a modular adapter ring collection, making the props compatible with various brushless motor shaft diameters. This ensures a tight, vibration-free fit on collet-style prop adapters.
• Factory-Matched Rotational Balancing: The blades are pre-milled to ensure consistent weight distribution across both tips. This helps prevent high-frequency "jello effect" distortions in aerial video feeds caused by uneven shaft balance.

Common Applications

• F450 Quadcopter & F550 Hexacopter Builds: Serving as the definitive lift array for standard DJI-clone training frames and custom autonomous mapping drones.
• Aerial Videography Training Drones: Providing a stable, smooth hover response for budget payload frameworks carrying action cameras or lightweight tracking gimbals.
• STEM Robotics & Drone Academies: Used as a low-cost, durable instruction prop kit for university aeronautics engineering projects and custom flight controller software tuning.
• Fixed-Wing RC Park Flyers: Installed on traditional front-puller or rear-pusher RC airplanes requiring high low-speed thrust for quick vertical take-offs.

Professional Usage & Flight Safety Tips

• Strictly Verify Rotation Directions Before Take-off: Misaligning your CW and CCW propellers is the primary cause of immediate drone flips upon initial throttle up. A CW propeller belongs on a motor that rotates clockwise, and a CCW propeller (often marked with an "R" or "L" suffix on the blade face, e.g., 9047R) belongs on a counter-clockwise motor. Double-check that the raised leading edge of the blade curve slices into the rotation direction of the motor track.
• Perform Physical Propeller Balancing: Even though factory molds are highly accurate, minor composite density variations can exist. Before bolting a new set to your motors, place the prop on a magnetic propeller balancer. If one side dips downwards, apply a tiny strip of clear packing tape to the lighter blade tip until the prop rests perfectly horizontal. This step reduces bearing wear on your brushless motors.
• Match Prop Size to Battery Voltage Dynamically: If you are transitioning your drone system from a 3S (11.1V) LiPo to a higher-voltage 4S (14.8V) LiPo pack, watch your motor temperatures closely. Dropping in a higher voltage pushes more current through the coils. While a 9047 prop handles comfortably on a 1000KV motor at 3S, it may overload the motor on 4S, forcing you to step down to an 8-inch prop to avoid frying the Electronic Speed Controllers (ESCs).
• Discard Nicked or Dented Blades Immediately: Never attempt to straighten out a bent composite blade or fly with a chipped edge. The rotational forces acting on a drone prop tip can exceed several thousand RPM. A structural fracture point can cause the blade to explode mid-air under high load, causing an instantaneous, catastrophic loss of flight control.