12:55 pm Wed 28 Aug Engineering 5th year Q Home Insert Draw View A Text Mode Lasso Select Insert Space ICS 03: The temperature of air inside a hot air balloon can reach up to 100°C. This temperature change causes the density of air inside the balloon to be 0.95 kg/m³. If the air outside the balloon is 20°C with Pair = 1.204 kg/m³ What is the required volume of balloon to lift a 2 kN carriage + canvas and 4 kN worth of people? HINT: Draw a FBD and include the weight of air inside the hot air balloon.

The data below is from a passenger hot air balloon. The balloon is designed to lift 10-people (80 kg each person). The balloon consists of a basket, a burner- propane tank system. It will lift up when the cold air trapped inside warms up by the burner. Density of air inside the balloon is 99°C: 0.9486 kg/m³, density of air outside balloon is 20°C (ambient): 1.2041 kg/m³, Assume the balloon is a sphere shape, volume =(4/3)pi R3 Mass (kg) Balloon Basket Burner Propane tank   113.4 kg 63.5 kg 22.7 kg 183.7 kg    a) Determine the minimum diameter of the balloon that would have a total lifting force to balance the weight of balloon, basket, burner, propane tank and 10 people? b) If the balloon is converted to survey the weather, it will be filled with hydrogen gas (H2). Assume the weight of the people (800kg) is now replaced by onboard equipment,  what is minimum diameter needed to keep it afloat at 18km above the surface of the earth?

For a gas, which of the following does not vary with temperature?  - the gas soecific weight - the gas dynamic viscosity - the gas specific volume - the gas constant R - the gas density

The data listed below is from a passenger hot air balloon. The balloon is designed to lift 10-people (80 kg each person). The balloon consists of a basket, a burner- propane tank system. It will lift up when the cold air trapped inside warms up by the burner. Density of air inside the balloon is 99°C: 0.9486 kg/m³, density of air outside balloon is 20°C (ambient): 1.2041 kg/m³ Mass (kg) Balloon Basket Burner Propane tank   113.4 kg 63.5 kg 22.7 kg 183.7 kg      Assume the balloon is a sphere shape, volume =(4/3)pi R3. a. Determine the minimum diameter of the balloon that would have a total lifting force to balance the weight of balloon, basket, burner, propane tank and 10 people? b. If the balloon is converted to survey the weather, it will be filled with hydrogen gas (H2). Assume the weight of the people (800kg) is now replaced by onboard equipment,  what is minimum diameter needed to keep it afloat at 18km above the surface of the earth?