Helicopter Lift: Equations, Torque & RPMs

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Discussion Overview

The discussion revolves around the equations and principles related to helicopter lift, torque produced by the main rotor, and the relationship between rotor RPM and lift. Participants also explore differences between helicopter blades and propeller blades, as well as the calculations involved in torque and lift forces.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant inquires about the helicopter lift equation and the torque produced in the main rotor, as well as the RPM variations with the tail and main rotor.
  • Another participant states that there is no simple equation that fits the request for helicopter lift.
  • A different participant asks for clarification on the differences between propeller blades and helicopter blades, specifically regarding their thrust and lift variations.
  • There is a request for the calculation of the torque produced in the main rotor and the counter torque required for the tail rotor, with a note about using a 12V motor.
  • One response suggests that the calculations may be beyond the scope of the inquirer’s current understanding and advises experimentation with the tail rotor.
  • A new participant seeks to understand the total lift force required for helicopter flight and the effect of rotor RPM on that force.
  • Another participant references an earlier reply, indicating that the information may have already been addressed.
  • One participant suggests an introductory book on helicopter aerodynamics that includes main formulas and concepts, providing a link for further reading.

Areas of Agreement / Disagreement

Participants express various levels of understanding and inquiry, with no consensus reached on the specific equations or calculations for helicopter lift and torque. Multiple competing views and questions remain unresolved.

Contextual Notes

Some participants indicate limitations in understanding or scope, suggesting that the calculations and concepts may require more foundational knowledge or practical experimentation.

technovipin
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Helicopter lift...

can i know the helicopter lift equation, torque produced in the main rotor,rpm variation with the tail and main rotor?
 
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There is no simple equation of the form you are asking.
 


can i know the difference between propeller blades, helicopter blades and their thrust and lift variation...
 


Again, what russ said.
 


can i know the calculaiton for the torque produced in the main rotor of the helicopter? and counter torque that has to be given to the tail rotor?
Note:- i am using a 12v motor
 


That is going to be beyond the scope of what you're able to do (based on your posts). Just play around with the tail rotor until you get it to work.
 


Hi.

This is my first post,
Can anybody help me to under stand the total lift force required to fly the helicopter ...
What is the effect of Rotor RPM on that......
 


Did you not read the very first reply by Russ?
 


Looks like a language problem. But try this
 

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