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2. Boeing Rotorcraft Systems - Wikipedia

   en.wikipedia.org/wiki/Boeing_Rotorcraft_Systems

   Boeing Vertol CH-47 Chinook. Boeing Rotorcraft Systems (formerly Boeing Helicopters and before that Boeing Vertol) is the former name of an American aircraft manufacturer, now known as Vertical Lift division of Boeing Defense, Space & Security. The headquarters and main rotorcraft factory is in Ridley Park, Pennsylvania, a suburb of Philadelphia.

3. Power shovel - Wikipedia

   en.wikipedia.org/wiki/Power_shovel

   Power shovels are a type of rope/cable excavator, where the digging arm is controlled and powered by winches and steel ropes, rather than hydraulics like in the modern hydraulic excavators. Basic parts of a power shovel include the track system, cabin, cables, rack, stick, boom foot-pin, saddle block, boom, boom point sheaves and bucket.

4. Mazda RX-7 - Wikipedia

   en.wikipedia.org/wiki/Mazda_RX-7

   Mazda RX-7. The Mazda RX-7 is a front-engine, rear-wheel-drive, rotary engine-powered sports car that was manufactured and marketed by Mazda from 1978 until 2002 across three generations, all of which made use of a compact, lightweight Wankel rotary engine. The first-generation RX-7, sometimes referred to as the SA (early) and FB (late), is a ...

5. Rotorcraft - Wikipedia

   en.wikipedia.org/wiki/Rotorcraft

   Rotorcraft. A rotary-wing aircraft, rotorwing aircraft or rotorcraft is a heavier-than-air aircraft with rotary wings that spin around a vertical mast to generate lift. The assembly of several rotor blades mounted on a single mast is referred to as a rotor. The International Civil Aviation Organization (ICAO) defines a rotorcraft as "supported ...

6. Wankel engine - Wikipedia

   en.wikipedia.org/wiki/Wankel_engine

   Produces three power pulses each revolution of the rotor. Gives one power pulse per revolution of the output shaft. The Wankel engine (/ˈvaŋkəl̩/, VUN-kell) is a type of internal combustion engine using an eccentric rotary design to convert pressure into rotating motion. The concept was proven by German engineer Felix Wankel, followed by a ...

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