How to calculate the force required to lift an object into the air (helicopter)

[SIDDHARTH MANWANI]

Hey everyone,I am trying to make a helicopter using an AVR or ARDUINO BOARD I wanted to know how do I calculate the force required to lift the helicopter.Can anyone also help me how much revolutions per minute(r.p.m) should the fans generate.I am planning to use two fans.

 

[berkeman]

Welcome to the PF.

I am planning to use two fans.

How are you going to keep it stable? With only 2 fans (and no cyclic control of the main rotor like a full-size helicopter uses), that can be harder. Are you wanting to build something like a drone?

https://visitgreenland.com/wp-content/uploads/2017/09/aningaaq-_-drone3-e1505397720880-1500x630.jpg

 

[berkeman]

I wanted to know how do I calculate the force required to lift the helicopter.

BTW, there is a discussion going on now about the power requirements for drones lifting payloads in this thread: https://www.physicsforums.com/threads/lift-engine.951255/

 

[russ_watters]

Hey everyone,I am trying to make a helicopter using an AVR or ARDUINO BOARD I wanted to know how do I calculate the force required to lift the helicopter.Can anyone also help me how much revolutions per minute(r.p.m) should the fans generate.I am planning to use two fans.

I don't think you are asking the right questions here. Isn't the force obvious? It's the weight of the helicopter!

And RPM; it is only one of many related properties of fans and not that meaningful on it's own.