DESIGN OF A HOT-AIR BALLOON Problem Statement: Design a Hot Air Balloon capable

Question

DESIGN OF A HOT-AIR BALLOON Problem Statement: Design a Hot Air Balloon capable of flying 5 people 4,000ft above the ground for one-hour flight. Assumptions: Balloon is of spherical shape Balloon operates with propane gas The containment weight for propane is 60% of the weight of the fuel Balloon is made of rubber-silicon impregnated nylon Air behaves like an ideal gas Starting points and Develop a force balance based on Archimedes buoyancy principle Determine a location or use standard atmospheric properties Use web-search for various data you may need Make "engineering judgments/assumptions" whenever you need and clearly state ALL assumption you make in your design Outcomes/Results: Determine the size of the balloon Determine the total amount of propane needed to accomplish this flight objective

Explanation / Answer

The answer of the following questions are as follows

a) The size of the balloon is 2800 m3 or 99000 cubic ft.

b) The total amount of propane needed to accomplish this flight objective is 75 litres

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