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Starting an AquaSkipper on the river Spree in Berlin The Decavitator An AquaSkipper underway. A human-powered hydrofoil is a small hydrofoil watercraft propelled entirely by the muscle power of its operator(s). [1] Hydrofoils are the fastest water-based vehicles propelled solely by human power.
An exploded-view drawing is a diagram, picture, schematic or technical drawing of an object, that shows the relationship or order of assembly of various parts. [1]It shows the components of an object slightly separated by distance, or suspended in surrounding space in the case of a three-dimensional exploded diagram.
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These three-pole armatures also have the advantage that current from the brushes either flows through two coils in series or through just one coil. Starting with the current in an individual coil at half its nominal value (as a result of flowing through two coils in series), it rises to its nominal value and then falls to half this value.
The poles can be varied at a ratio of 1:2 and thus the speed can be varied at 2:1. [ 7 ] [ 8 ] [ 9 ] Normally, the electrical configuration of windings is varied from a delta connection (Δ) to a double star connection (YY) configuration in order to change the speed of the motor for constant torque applications, such as the hoists in cranes .
Bowsprit held down by a bobstay Bowsprit with forestays and bobstays. The bowsprit of a sailing vessel is a spar extending forward from the vessel's prow.The bowsprit is typically held down by a bobstay that counteracts the forces from the forestays.