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The dihedral synchro-helix actuation door system is a type of door with a hinge mechanism which allows the doors to rotate 90° by sweeping outwards and upwards at the hinge. [1] It was designed and developed by Christian von Koenigsegg on behalf of high-performance sports cars manufacturer, Koenigsegg Automotive AB . [ 2 ]
A geared continuous hinge is a type of continuous hinge used mostly on doors in high-traffic entrances and features gear teeth that mesh together under a cap that runs the length of the hinge. The hinges use a number of fasteners to attach the door to the frame from top to bottom to distribute a door’s weight more evenly along the frame to ...
Gullwing doors with a second hinge between door and moving roof panel are called falcon wing doors. Scissors – rotate vertically at a fixed hinge at the front of the door, and open by rotating on a horizontal axis, perpendicular to the vehicle's length. Scissor doors that also move outward while rotating are called dihedral synchro-helix ...
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An ornate brass door hinge A barrel hinge. A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation, with all other translations or rotations prevented; thus a hinge has one degree of freedom.
The Book of Samuel is commonly accepted to be written by Prophets Samuel, Nathan, and Gad between 960 and 700 B.C. [5] Later, more concrete, examples of the shin guard concept resurfaced in the Middle Ages. All studies and evidence show greaves were improved to cover the entire lower leg, front and back, from the feet to the knees, and were ...
Italian greaves, 15th century. Greaves were common until around the 9th century AD, when they largely disappeared from use. [4] The first evidence of their reappearance is in the 1230s or 1250s, most notably the depiction of Goliath in the Trinity College Apocalypse manuscript (c. 1230). [5]
The Vickers Vernon, introduced in 1921, was the first cargo plane for military troops The Arado Ar 232, the first purpose built cargo aircraft A U.S. Air Force Lockheed C-130 Hercules, the archetypal military transport aircraft, over the Atlantic Ocean in 2014 The Antonov An-225 Mriya, the heaviest cargo aircraft