Variable pitch propeller hub VPP-3-20 (ВИШ-3-20)

The use of variable pitch propeller increases the efficiency of aircraft engine and allows to change the speed without engine RPM alteration. This particular model of variable pitch prop hub is designed to install on ultralight aircraft such as airplane, gyrocopter, airtrikes. Direct current electric motor with planetary gear is built in propeller hub. Electric motor is powered through a system of carbon brushes and contact rings. Rotation of the electric motor by means of screw-and-nut transmission is converted into linear motion of carriage, in turn the carriage via rods rotate blade holders. 


galo20x20In-flight propeller pitch adjustment

galo20x20Quick pitch adjustment

galo20x20Easy blades replacement

galo20x20Propeller hub ready to instal on Rotax flange

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Max. angle of blade rotation – 25˚
Max. engine power – 140 hp
Weight of hub (without blades) – 5,4 kg
Blade rotation speed - 20˚/sec
Voltage – 11-14V
Power consumption – 80W
Max. current – 15A

Blades are mounted in hub by means of threaded split insert which has high roughness of thread surface for reliable fixation.



Variable pitch prop hub set content:

  • Mounting studs of AISI 4140H – 6pcs
  • Crown nut – 6pcs
  • Nylon lock nut – 6pcs
  • Carbon brushes – 1 unit

The tapped hole on the face of hub designed for hanging of propeller for balancing.


Propeller pitch control.

Our company designed control system of variable pitch prop which consists of: Electronic control unit of VPP which should be mounted as close as possible to the propeller and control board of VPP, control board can be mounted in any convenient place for pilot. Buttons on control board allow to change propeller pitch in 2˚ increments in standard configuration, optionally we can set any increment. Also user can set max and min propeller pitch just with a press of a button.

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Optionally we can supply propeller hub with the blades of Lugaprop. Blades of Kievprop and Aeroprop can also be installed in this hub. Hub can be adapted for Australian blades BOLLY series 3 .