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2. Propeller (aeronautics) - Wikipedia

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

   While a propeller may be tested in a wind tunnel, its performance in free-flight might differ. At the Langley Memorial Aeronautical Laboratory, E. P. Leslie used Vought VE-7s with Wright E-4 engines for data on free-flight, while Durand used reduced size, with similar shape, for wind tunnel data. Their results were published in 1926 as NACA ...

3. Propeller - Wikipedia

   en.wikipedia.org/wiki/Propeller

   An advanced type of propeller used on the American Los Angeles-class submarine as well as the German Type 212 submarine is called a skewback propeller. As in the scimitar blades used on some aircraft, the blade tips of a skewback propeller are swept back against the direction of rotation. In addition, the blades are tilted rearward along the ...

4. Propeller theory - Wikipedia

   en.wikipedia.org/wiki/Propeller_theory

   Propeller theory is the science ... is a function of the Reynolds' number, and is a function ... is the ratio of the linear dimensions. Thrust and velocity, at the ...

5. Dornier 228 - Wikipedia

   en.wikipedia.org/wiki/Dornier_228

   The main outside change of the 228NG is the five-bladed propeller. In 2002, RUAG took over the Services and Components divisions from Fairchild Dornier, including the Dornier 228 production rights. [5]

6. Advance ratio - Wikipedia

   en.wikipedia.org/wiki/Advance_ratio

   When the vehicle is moving at low speed or the propeller is rotating at high speed, the advance ratio is a low number. The advance ratio is a useful non-dimensional quantity in helicopter and propeller theory, since propellers and rotors will experience the same angle of attack on every blade airfoil section at the same advance ratio regardless ...

7. 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 ...

8. Toroidal propeller - Wikipedia

   en.wikipedia.org/wiki/Toroidal_propeller

   A toroidal propeller is a type of propeller that is ring-shaped with each blade forming a closed loop. The propellers are significantly quieter at audible frequency ranges, between 20 Hz and 20 kHz, while generating comparable thrust to traditional propellers.

9. Nimitz-class aircraft carrier - Wikipedia

   en.wikipedia.org/wiki/Nimitz-class_aircraft_carrier

   A gearbox transmits power to four propeller shafts, producing a maximum speed of over 30 knots (56 km/h) and maximum power of 260,000 brake horsepower (194 MW). [6] The turbines power the four bronze propellers, each with a diameter of 25 feet (7.6 m) and a weight of 66,000 pounds (30 t). Behind these are the two rudders, which are 29 feet (8.8 ...