2) Professor Hertzberg wants to open a pizza delivery business delivering pizzas

Question

2) Professor Hertzberg wants to open a pizza delivery business delivering pizzas anywhere you want using drones. The 2 TA's Mike and Gazendra are hiking to a remote area and are starving from the hike. They order a pizza (Mass of package(mp) 1 kg) from the drone delivery service Drone Specs: Total mass of drone (not including package) (md) 4 kg # of propellers (NP)-4 Diameter of propeller (dp) 25 cm Motor efficiency (E)-70% or .7 Total Battery capacity (Co) 6500 mAh Battery Voltage (Vb) 22.2 v Battery discharge rate (Crate) 8C NoteBattery discharge rate (C rating) gives you how fast the battery can output electrical energy. A C rating of 1 C would discharge all the capacity of battery in 1 hr. So, for a 100 mAh battery, the continuous output would be 100 mA. Similarly, 5 C battery would have a total continuous output of 5100mA 500mA Consider the lifting power of the drone, and neglect the horizontal flight requirements. Will this drone be able to lift this pizza? What is the maximum weight the drone can lift? How long could it remain in flight? What would you change about the drone if you want it to carry a larger load? The following hints are to guide you through the problem - What power is being supplied to each propeller? Take the motor efficiency into account as well wer creating? What downward velocity of air is that po - What is the thrust created by that velocity? -What is the maximum load that thrust can lift? -Will the drone be able to lift the pizza? - What variables can you change to increase the thrust (this increases the maximunm load)?

Explanation / Answer

Changes required in dhrone to lift the pizza motor voltage rating should be high

Downward velocity of air depends upon propeller fan angle and direction of rotating blade

3. Thrust created by the velocity of air depends upon propeller fan angle and direction of rotating

4. Maximum load of thrust can be depends upon fan motor capacity and AIR flow direction

5 defenetly can lift the pizza

6. Changes required in motor capacity and blade angle direction of rotating blade

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