How to determine what electric motor to use. Need guidance please.

AI Thread Summary
An engineering student is seeking guidance on selecting an electric motor for a UAV project focused on surveillance in Greenland, emphasizing the need for cost-effective and lightweight propulsion systems. The student is specifically looking for resources that explain the mathematics behind electric motors, including range equations, thrust calculations, and battery compatibility. A forum member questions the assumption that electric motors are cheaper and lighter than petrol engines, indicating a need for further exploration of these factors. The discussion highlights the importance of understanding the technical specifications and performance metrics of electric propulsion systems. Overall, the conversation underscores the complexities involved in transitioning from petrol to electric propulsion in UAV design.
SilentIdea
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Hello all!

I'm an engineering student who is taking part in a group project to design and build a UAV to carry out surveillance in Greenland. Now my specific task is to sort out our means of propulsion and materials. The problem is up to now I have only learned about petrol propulsion systems in terms of maths.

We are aiming to use an electric motor due to several limitations such as cost and weight. I was therefore wondering if someone could link me to some material which explains the mathematics that need to be attempted in order to work out for example:-

The range equation for an electric motor.
Thrust that can be provided.
How to tell whether or not a battery will be compatible with a certain electric motor. Etc...

SilentIdea
 
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What makes you think electric motors are cheaper and lighter than petrol engines?
 
I've sent you a PM.
 

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