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Basic parts of an outboard motor. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method of propelling small watercraft.
Typical trim tabs on aileron, rudder and elevator. Trim tabs are small surfaces connected to the trailing edge of a larger control surface on a boat or aircraft, used to control the trim of the controls, i.e. to counteract hydro- or aerodynamic forces and stabilise the boat or aircraft in a particular desired attitude without the need for the operator to constantly apply a control force.
The first use of outboard cuffs, other than on NASA research airplanes, was on the Rutan VariEze in 1978. They were wind tunnel tested in 1982, and later (1984) replaced by vortilons. [24] Following aircraft were modified for experiments with the addition of an outboard leading-edge cuff as a result of NASA stall/spin research program :
The outdrive resembles the bottom half of an outboard motor and is composed of two sub-units: an upper containing a driveshaft connected through the transom to an engine which transmits power to a 90-degree-angle gearbox; and the lower containing a vertical driveshaft receiving power from the upper unit gearbox, transmitted through another 90 ...
The most widespread form of self-steering, the servo pendulum, was introduced to cope with the power required to operate a larger rudder and was a successor to the servo trim tab principle (introduced by Herbert "Blondie" Hasler). Common to all servo pendulum rudder (oar, blade) systems is the fact, that the speed of the boat through the water ...
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