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The earliest form of sequential (although not proportional) actuator for radio control was the escapement. [3] Like the device used in clocks, this escapement controls the release of stored energy from a spring or rubber band. Each signal from the transmitter operates a small solenoid that then allows a two- or four-lobed pawl to rotate.
Standing rigging on a fore-and-aft rigged sailboat. 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 ...
Rigging comprises the system of ropes, cables and chains, which support and control a sailing ship or sail boat's masts and sails. Standing rigging is the fixed rigging that supports masts including shrouds and stays. Running rigging is rigging which adjusts the position of the vessel's sails and spars including halyards, braces, sheets and ...
A mass-produced radio-controlled yacht In 1898, Tesla demonstrated a radio-controlled boat (U.S. patent 613,809 —Method of an Apparatus for Controlling Mechanism of Moving Vehicle or Vehicles). A radio-controlled boat is a boat or ship model controlled remotely with radio control equipment.
Adjustable fairlead (lower right) leading to winch on sailboat Fairlead (Chock style) Three mooring lines running through fairlead on a Royal New Zealand Navy ship.. A fairlead is a turning point for running rigging like rope, chain, wire or line, that guides that line such that the "lead" is "fair", and therefore low friction and low chafe. [1]
A square rig sail with a halyard is mounted on a lifting yard that is free to slide on a short section of the mast. The halyard is used to raise (hail or hal) the yard when setting the sail. A gaff rigged sail has two; a throat halyard to lift the end of the gaff nearer the mast, and a peak halyard to lift the outer end.
The rope may be stored on the winch. When trimming a line on a sailboat, the crew member turns the winch handle with one hand, while tailing (pulling on the loose tail end) with the other to maintain tension on the turns. Some winches have a "stripper" or cleat to maintain tension. These are known as "self-tailing" winches. [1]
A binnacle (/ ˈ b ɪ n ə k əl /) is a waist-high case or stand on the deck of a ship, generally mounted in front of the helmsman, in which navigational instruments are placed for easy and quick reference as well as to protect the delicate instruments.