- #1

- 18

- 1

Hello everyone!

I am currently developing a thesi to become an aeronautical engineer.

I am trying to reproduce the NASA report "a mathematical model of a single main rotor helicopter for piloted simulation".

I already built a simulink model but i am having a bit of trouble looking at the equations.

I uploaded a picture of the equation's set. I can't explain the L equation highlighted.

How can the lift be 0 when the angle of attack is 90 or -90 deg? cos(90) is zero, but at that alpha the lift should be maximum.

Thank to who will answer!

I am currently developing a thesi to become an aeronautical engineer.

I am trying to reproduce the NASA report "a mathematical model of a single main rotor helicopter for piloted simulation".

I already built a simulink model but i am having a bit of trouble looking at the equations.

I uploaded a picture of the equation's set. I can't explain the L equation highlighted.

How can the lift be 0 when the angle of attack is 90 or -90 deg? cos(90) is zero, but at that alpha the lift should be maximum.

Thank to who will answer!