That is why if helicopters only have the main rotor, the torque generated by the main propeller will send the body of the helicopter spinning in the opposite direction, and it needs a small rotor on the tail to prevent that. Just like how a person needs to "push off" against the ground in order to walk forwards, the motor needs to continuously "push off" against something in order to rotate. There is another aspect to this law however, and is the fact that anything rotating will generate a small spinning force in the opposite direction, called torque. A drone will move if you move it.īased off of the second law, it is clear if you have a lighter drone, you will have longer flight times (less force required to accelerate it), quicker reaction time (if you decide to put more force, the drone will accelerate faster), and better maneuverability.īased off of the third law, drone propellers throw air down with a certain force, the air molecules will push up on the propellers with the same force, therefore the drone moves up. Third Law: For every action there is an equal and opposite reactionīased off of the first law, a drone will stay on the unless you decide to move it. Second Law: The force required to accelerate an object to a certain velocity depends on the mass (F=ma) In perspective, a DJI Phantom has a thrust to weight ratio of about 2:1.įirst Law: What is at rest will stay at rest and what is in motion will stay in motion, unless there is an external force acting on it. Theoretically, this drone has a thrust-to-weight ratio about 4:1.
Fully loaded with the battery, the all up weight (AUW) is just above 800g, and with each motor pushing out up to 740g of thrust. Note: Though this drone is made of cardboard, this is no slouch when it comes to flying. Steps 35: Summary, Future Upgrades/Add-Ons, Final Remarks Steps 32-34: PID Tuning and Maiden Flight-ish Steps 25-31: Code, Calibration, Setup, and Theory Steps 1-2: Physics and About Quadcopters Some parts are written as if a complete beginner was reading it: Without further ado, here's the breakdown of this instructable. Electroboom: (Funny and also great electronics information) Great Scott: (Great electronics information)
Joop Brokking: (He has an AMAZING playlist for drone building) I would like to thank and recommend some Youtube channels that I have watched and learned from which helped arm me with the knowledge that I have today: I hope that by reading this instructable, you will be able to fully understand and admire the concepts and theory behind quadcopter building. This drone tutorial go cover how I built my drone as well as go deep into the nitty-gritty aspects from the construction of the frame all the way to the code.
Almost 4 years later, this project is coming to a close, and along the way, I have built my engineering knowledge from the ground up, and I will be sharing my knowledge with everyone in the Instructables community so that if another 6th grader were to find themselves upon this Instructable, I hope they will not spend nearly as much time trying to build a drone, but still acquire the same knowledge that I have. This project started all the way back when I was in 6th grade and completely new to electronics, when I thought to myself, "Hey, let's build a shouldn't be that hard.right?" Yea, guess what, it's hard.
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