الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Rigid airship is a mean of transportation that can be used in Egypt to flourish economy. Airship can be used in different applications such as Freight and passengers’ transportation, communications, weather forecasting, agriculture, observing environment, conditions monitoring for farmlands, tourism, as a crane and in research. This research goes throughout the general design steps for an airship starting by skeleton, outer surface and balloons that give airship the necessary buoyant force to fly by filling these balloons with a lifting gas that is less dense than the surrounding air. Controlling the airship altitude, it could be achieved by changing the overall density of airship, compressing lifting gas and enabling surrounding air to replace it, Airship goes down. Expanding lifting gas and enabling surrounding air to vent out, Airship goes up. Drag coefficient is calculated using ANSYS, therefore, thrust power required for airship to move is calculated. Different energy alternatives used to drive airship was comprehensively studied for economic operation. These alternatives vary between renewable (Solar energy and fuel cell) and traditional (Diesel) energies. Comparison between these alternatives was presented. In three of these alternatives, flight duration is limited and distance is fixed, so as long as duration or distance increases, payload decreases, therefore, IV transportation cost per ton increases. The fourth alternative depending on renewable energy, either flight duration or distance is unlimited and there is no change in payload and transportation cost per ton remains unaffected. It was found that solar energy with fuel cell is the most effective system for long duration flights. Although traditional energy (Diesel energy) is seemed most economical in short duration flights, the renewable energies are environmental friendly where there is no harmful exhaust as well as minimum fire and explosion risk.