Propellers Lab Report

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Introduction
The experiment I am doing deals with mainly aerodynamics. Before we get into anything else, let me explain and define the terms you need to know before doing this experiment. The three main terms needed to further understand my project are these below.
Chord- The straight line width of the propeller at a given distance along the radius.
Twist- The local angle of the blade at a given distance along the radius.
Radius- The distance from the center to the tip, along the center line.

3.
Now that those three definitions are listed above, let’s begin. As you may know, airplanes, or helicopters, which I am going to use in my experiment, use propellers which are mechanical devices for propelling a boat or aircraft, consisting …show more content…

Imagine this: A helicopter with huge blades and a helicopter with small blades. They are the exact same size, besides the blades, of course. Ask yourself. Which one do you think would get airborne first, if it even can? Well the one with larger blades, of course. The one with the smaller blades probably wouldn’t even be able to go airborne due to the weight of the helicopter. I know this is correct because like I said in the beginning of this paragraph, the blade span is larger, making for more air thrust, which means higher voltage, making it more …show more content…

If the twist angle is too high, it will, believe it or not, decrease the efficiency because it would be a lot harder for the blades to cut through the air. If the twist angle is too low, it will also not help because it would be acting like there isn’t a twist at all and the propellers would be fully relying on the motor that is turning them. An ideal degree of an angle would be needed, probably depending on the size of the helicopter or the length of the radius. In my case, I am going to be using a model helicopter, probably about the size of around a foot. Remember, this is just an estimate because I am typing this now before I got the parts to start doing my

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