Normally propellers are multi-blades but the simplicity of a single-blade propeller fits well on motorized gliders, because it permits the design of a smaller aperture of the glider fuselage for retraction of the power plant. The counterbalanced teetering mono-blade propeller generates fewer vibrations than conventional multi-blade configurations.
Single-blade propellers are often used in motorized gliders because they enable a reduced fuselage size for engine retraction. In contrast to multiple-bladed designs, single-blade propellers produce less vibration.