Sıra | DOSYA ADI | Format | Bağlantı |
---|---|---|---|
01. | Hovercraft Engine Engines Enginee | ppt | Sunumu İndir |
Transkript
HOVERCRAFTVehicle or plane
The first hovercraft was invented and patented by the English inventor Christopher Cockerell, in 1952. In the mid-1870s, the British engineer Sir John Isaac built models based on his idea of using air between the hull of a boat and the water to reduce drag. Finnish engineer DI Toivo J. Kaariohe, 1931 built the first functional ground effect vehicle, but his invention did not receive sufficient funds for further development. History of the Hovercraft
Main parts PropellersAirFlexible skirtFan5Engine
Design Hovercraft have one or more separate engines. One engine drives the fan which is responsible for lifting the vehicle by forcing air under the craft.The air therefore must exit throughout the \skirt,\ lifting the craft above the area on which the craft resides.One or more additional engines are used to provide thrust in order to propel the craft in the desired direction.Hovercraft is air-cushion vehicle (ACV).
Type of HovercraftCivil commercial hovercraftMilitary hovercraftHoverbargeHovertrainHobbyists
RecordsWorld's Largest Hovercraft—The Russian “Zubr class LCAC” at 57.6 meters length. This hovercraft can transport up to 130 tons of cargo.World's Hovercraft Speed Record— 18 September, 1995—Speed Trials, Bob Windt (U.S.) 137.4 kilometers per hour.
Advantage They can travel over almost any non-porous surface. They can operate from any unprepared beach. They are fast when compared to a conventional ship. They can operate in some combinations of fog, ice and wind when no other transport can safely operate.
Disadvantages Like aircraft they need a degree of inspection and maintenance. Like aircraft, their weight must balance their lift. Hovercraft cannot operate on steep slopes.The hovercraft is almost totally unable to travel on a regular street due its size.High price.Very noisy.
Thanks for the attentionby Nenad Leontijević B1.a