Duc Flash Inconel Propellers

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The Flash propeller range with innovative design, specifically about its twisting axis and center of pressure. Its aerodynamic design allows a "constant speed" effect, limiting variations in engine speed between on ground and in flight.

These propellers allow for high efficiency throughout the flight envelope:
    Improved takeoff and climb rate due to higher engine speed, then higher engine efficiency
    Many cruise extension
    A high user comfort
The blades and the hub of the Flash propeller range are manufactured according the DUC HÚlices company technologies, from unidirectional layers of carbon fibers prepreg epoxy resin.

Their composite structures are defined to obtain the maximum stresses in torsion and bending. Therefore "constant speed" effect is not related to deformation of the blade but its geometry and specific profile.

Due to its specific geometric definition, excellent performance is obtained in both aerodynamic and acoustic, but also in consumption.

Shielding leading edge in Inconel
    The leading edge of the FLASH blades is equipped with a metallic shielding in Inconel«. This material is refractory stainless with a very high hardness of surface.
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WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


  • Tractor or pusher configuration (available in right & left rotation)
  • Diameters ě1520, ě1620, ě1660, ě1730, ě1850mm and others tailor made
  • Two 7.39lb.
  • Three Blade 9.70lb.
  • Shielded leading edge in Inconel«
  • Carbon composite hub with metallic inserts
  • Direct assembly on the propeller-shaft ě101.6mm



Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.