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Figure 5 and 6: W for a vertical mast, with a constant width, subject to a horizontal load which is evenly distributed along its height or concentrated at the top. Figure 7: W for a membrane of revolution on a vertical axis, with a constant or variable thickness, under an evenly distributed vertical load.
The stationary (outer) swashplate is mounted on the main rotor mast and is connected to the cyclic and collective controls by a series of pushrods. It is able to tilt in all directions and move vertically. The rotating (inner) swashplate is mounted to the stationary swashplate by means of a bearing and is allowed to rotate with the main rotor mast.
A guyed radio mast. A guyed mast is a tall thin vertical structure that depends on guy lines (diagonal tensioned cables attached to the ground or a base) for stability. The mast itself has the compressive strength to support its own weight, but does not have the shear strength to stand unsupported or bear loads.
Key: 1. Forestay 2. Shroud 3. (Spreaders) 4. Backstay 5. Inner forestay 6. Sidestay 7. (Boom) 8. Running backstays Standing rigging on a square-rigged vessel (illustrated left), which supports a mast comprising three steps: main, top, and topgallant (illustrated right). The shrouds support each section laterally and the stays support each, fore ...
The ABEC scale is designed to provide bearing manufacturers dimensional specifications that meet the standards of precision bearings in a specified class. The scale is also used by manufacturers who produce equipment that require bearings must also know the dimensional tolerances to design parts that will accommodate a bearing.
Family of Improved Load Bearing Equipment (FILBE) is a series of equipment used by the United States Marine Corps for personal load carrying. It comprises the backpack and various attachments carried by an individual Marine in the field.
In marine navigation, a pelorus is a reference tool for maintaining bearing of a vessel at sea. It is a "simplified compass" without a directive element, suitably mounted and provided with vanes to permit observation of relative bearings. [1] The instrument was named for one Pelorus, said to have been the pilot for Hannibal, circa 203 BC.
Aircraft on the standard approach without an arc (called the CV-1) still have to correct from the marshal radial to the final bearing, and this is done in such case, at 20 nautical miles (37 km; 23 mi). As the ship moves through the water, the aircraft must make continual, minor corrections to the right to stay on the final bearing.