Creating lift equation-NEED HELP

[FutureFighter]

Creating lift equation---NEED HELP!

For a course I am taking, I need to determine a lift equation based on some variables.

Propose an equation for lift as a function of your three parameters. That is, if L=lift, A=Area, ρ=air density, and v=velocity, determine L(A, ρ, v).

I am just so lost--any help would be most appreciated!

 

[LowlyPion]

For a course I am taking, I need to determine a lift equation based on some variables.

Propose an equation for lift as a function of your three parameters. That is, if L=lift, A=Area, ρ=air density, and v=velocity, determine L(A, ρ, v).

I am just so lost--any help would be most appreciated!

Welcome to PF.

What do you think? How will Area affect Lift? Will it get larger with larger area or smaller?
Same with Air Density. Do you expect that you can get greater lift with denser air or thinner air?
Same again with velocity. Bigger lift with greater V or smaller?

Take the expression F = M*A The Force is greater for greater Mass or greater acceleration. But for the same Force greater Mass means smaller acceleration.

They want you to develop a relationship that reflects these interrelationships of the variables presented.

(As a tip: It can't hurt to put a constant of proportionality in, even if it turns out to be 1.)

 

[baba89]

Hello,

I understand that you are having trouble creating a lift equation for your course. I am happy to help you with this task.

The lift equation is an important concept in aerodynamics and is used to calculate the amount of lift generated by an object, such as an airplane, in a fluid, such as air. The equation is typically written as:

L = ½ ρ v² A CL

Where L is the lift force, ρ is the air density, v is the velocity, A is the surface area of the object, and CL is the coefficient of lift.

To determine the lift equation as a function of your three parameters (A, ρ, and v), we can rearrange the equation as follows:

L = ½ ρ v² A CL

L/A = ½ ρ v² CL

L(A, ρ, v) = ½ ρ v² CL

This means that the lift equation as a function of A, ρ, and v is equal to half of the air density times the velocity squared times the coefficient of lift.

I hope this helps you understand the lift equation better. If you have any other questions, please do not hesitate to ask. Good luck with your course!

Best,