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  2. Rotorhead - Wikipedia

    en.wikipedia.org/wiki/Rotorhead

    In helicopters the rotorhead is the part of the rotor assembly that joins the blades to the shaft, cyclic and collective mechanisms. It is sometimes referred to as the rotor "hub". The rotorhead is where the lift force from the rotor blades act.

  3. Autorotation - Wikipedia

    en.wikipedia.org/wiki/Autorotation

    It is a common emergency procedure taught to helicopter pilots as part of their training. In normal powered helicopter flight, air is drawn into the main rotor system from above and forced downward, but during autorotation, air moves into the rotor system from below as the helicopter descends.

  4. Swashplate (aeronautics) - Wikipedia

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

    Today, on most modern aircraft the swashplate is above the transmission and the pushrods are visible outside the fuselage, but a few early designs, notably light helicopters built by Enstrom Helicopter, placed it underneath the transmission and enclosed the rotating pushrods inside the mainshaft. This reduces rotor hub drag since there are no ...

  5. Robinson R22 - Wikipedia

    en.wikipedia.org/wiki/Robinson_R22

    Robinson Helicopter Tow Cart Connected to R22. R22’s are equipped with wheel mounts toward the rear of the skids, one on each side, for attachment of removable wheels. The wheels must be removed prior to flight. These brackets are slightly behind the helicopter center of gravity so when the wheels are installed, the helicopter sits nose low.

  6. Helicopter rotor - Wikipedia

    en.wikipedia.org/wiki/Helicopter_rotor

    Abrasion strips on helicopter rotor blades are made of metal, often titanium or nickel, which are very hard, but less hard than sand. When a helicopter flies low to the ground in desert environments, sand striking the rotor blade can cause erosion. At night, sand hitting the metal abrasion strip causes a visible corona or halo around the rotor ...

  7. List of United States military helicopters - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    Experimental helicopter Platt-LePage Aircraft Company: First helicopter tested by the USAAF. [1] 1941 Never 2 Sikorsky R-4: Sikorsky Aircraft Corporation: World's first large-scale mass-produced helicopter and the first helicopter used by the United States Army Air Forces. [2] 1942 Unknown 131 Sikorsky H-5: Sikorsky Aircraft Corporation 1943 ...

  8. Baby Has $5 Million Surgery to Remove Left Side of Brain at ...

    www.aol.com/lifestyle/baby-5-million-surgery...

    Related: Mom Noticed Her Toddler Was Acting Strange.Days Later, She Found Out It Was Stage 4 Cancer (Exclusive) From there, things began to get worse. Andalusia recalls seeing Caper’s eye twitch ...

  9. Sikorsky MH-60 Jayhawk - Wikipedia

    en.wikipedia.org/wiki/Sikorsky_MH-60_Jayhawk

    Chosen to replace the HH-3F Pelican, the MH-60T is a member of the Sikorsky S-70 family of helicopters and is based on the United States Navy's SH-60 Seahawk helicopter. [1] Development began in September 1986, first flight was achieved on 8 August 1989, and the first HH-60J entered USCG service in June 1990.