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  2. Harmonic damper - Wikipedia

    en.wikipedia.org/wiki/Harmonic_damper

    Harmonic balancer lower pulley on a four-cylinder engine. A harmonic damper is a device fitted to the free (accessory drive) end of the crankshaft of an internal combustion engine to counter torsional and resonance vibrations from the crankshaft. This device must be an interference fit to the crankshaft in order to operate in an effective ...

  3. Betty Reid Soskin - Wikipedia

    en.wikipedia.org/wiki/Betty_Reid_Soskin

    Betty Reid Soskin (née Charbonnet; born September 22, 1921) is an American retired ranger with the National Park Service, previously assigned to the Rosie the Riveter World War II Home Front National Historical Park in Richmond, California.

  4. Balance shaft - Wikipedia

    en.wikipedia.org/wiki/Balance_shaft

    Balance shaft in Ford Taunus V4 engine.. Balance shafts are used in piston engines to reduce vibration by cancelling out unbalanced dynamic forces. The counter balance shafts have eccentric weights and rotate in opposite direction to each other, which generates a net vertical force.

  5. Ranger L-440 - Wikipedia

    en.wikipedia.org/wiki/Ranger_L-440

    The Ranger L-440 (company designation 6-440C) are six-cylinder inline inverted air-cooled aero-engines produced by the Ranger Aircraft Engine Division of the Fairchild Engine and Airplane Corporation of Farmingdale, New York, United States. The engine was mainly produced for Fairchild's family of training aircraft in the mid-1930s.

  6. National Park Service ranger - Wikipedia

    en.wikipedia.org/wiki/National_Park_Service_Ranger

    The park ranger position in the federal government began as a series of specialized positions in the miscellaneous series. In 1959, the official park ranger position (GS-0025 Park Ranger) was established throughout the federal government. [4] along with its companion series the park technician (GS-0026). The park ranger position was designated ...

  7. Ranger Body Armor - Wikipedia

    en.wikipedia.org/wiki/Ranger_Body_Armor

    Ranger Body Armor (RBA) is a US military-issue ballistic vest that was designed for, and used chiefly by, US Army 75th Ranger Regiment operators ("Rangers") in the 1990s and 2000s. The RBA system has since been replaced by other specialized body armor systems adopted by the United States Special Operations Command (USSOCOM) .

  8. Bell 505 Jet Ranger X - Wikipedia

    en.wikipedia.org/wiki/Bell_505_Jet_Ranger_X

    The Bell 505 Jet Ranger X (JRX) is an American/Canadian light helicopter developed and manufactured by Bell Helicopter. The Bell 505 was unveiled at the 2013 Paris Airshow in June 2013 as the Bell SLS (Short Light Single). The Bell 505 designation was officially announced in February 2014. Its first flight occurred on November 11, 2014.

  9. Category:National Park Service ranger stations - Wikipedia

    en.wikipedia.org/wiki/Category:National_Park...

    This page was last edited on 12 November 2019, at 17:13 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.