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2. Z-drive - Wikipedia

   en.wikipedia.org/wiki/Z-drive

   The device is different from the Voith-Schneider marine propulsion system (also mechanically linked), which can also quickly change the direction of thrust, as the Z-drive uses a shrouded conventional screw that pivots or rotates the propeller, unlike the variable-geometry blades of the Voith-Schneider.

3. Outboard motor - Wikipedia

   en.wikipedia.org/wiki/Outboard_motor

   Ventilation is a phenomenon that occurs when surface air or exhaust gas (in the case of motors equipped with through-hub exhaust) is drawn into the spinning propeller blades. With the propeller pushing mostly air instead of water, the load on the engine is greatly reduced, causing the engine to race and the propeller to spin fast enough to ...

4. List of aircraft propeller manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_aircraft_propeller...

   Haw Propeller - Germany; Helices E-PROPS - Electravia - France (2008–present) Hélices Halter - France (1987-2014) Hamilton Standard - United States (1929-1999) Hamilton Sundstrand - United States (1999-2012) Hartzell Propeller - United States (1917–present) Hegy Propellers - United States; Heine Propellers - Germany; Helix-Carbon - Germany ...

5. Mercury Marine - Wikipedia

   en.wikipedia.org/wiki/Mercury_Marine

   MerCruiser sterndrives and inboards range from 135 to 430 horsepower (320 kW) and Mercury Racing outboards produce up to 450 horsepower (340 kW) and sterndrives to 1,750 horsepower (1,300 kW). Subsidiaries include Mercury Precision Parts and Accessories as well as Mercury propellers and Mercury Jet Drives.

6. de Havilland Propellers - Wikipedia

   en.wikipedia.org/wiki/De_Havilland_Propellers

   de Havilland Propellers was established in 1935, as a division of the de Havilland Aircraft company when that company acquired a licence from the Hamilton Standard company of America for the manufacture of variable-pitch propellers at a cost of about £20,000. [1] [citation needed] Licence negotiations were completed in June 1934.

7. Propeller (aeronautics) - Wikipedia

   en.wikipedia.org/wiki/Propeller_(aeronautics)

   A 6-bladed Hamilton Standard 568F propeller on an ATR 72 short-haul airliner. Lowry [27] quotes a propeller efficiency of about 73.5% at cruise for a Cessna 172.This is derived from his "Bootstrap approach" for analyzing the performance of light general aviation aircraft using fixed pitch or constant speed propellers.