30-05-2013, 04:49 PM
REAL HOVERCRAFT
REAL HOVERCRAFT.pdf (Size: 1.63 MB / Downloads: 307)
WHAT IS A HOVERCRAFT?
•A vehicle capable of travelling over surfaces on a cushion of slow moving, high-pressure air.
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The air is ejected against the surface below and contained within a skirt.
•A propeller in the vertical plane used to provide the thrust, to move forward.
HOVERCRAFT THRUST
•Propeller motor system in the vertical plane produces thrust.
•Thrust mechanism can also be integrated with the lift mechanism of the craft.
TWO PROPELLER TYPE
•2 different motor-propeller systems for Lift and Thrust mechanisms.
•Has the ability to hover at a place!
•Amount of lift independent of the amount of thrust.
•Horizontal plane –lift mechanism.
•Vertical plane –Propulsion mechanism, integrated with controls.
•Generally used for large scale purposes.
SINGLE PROPELLER TYPE
•Lift and propulsion mechanisms integrated.
•A vertical/slightly inclined motor propeller system.
•Duct provided to push some amount of air through below the mainframe into the skirt.
•Efficiency depends on better duct designing.
•Lift dependent on thrust.
•Maximizing air flow for lift, not compromising on thrust.