How can `tan lambda = (cos phi_n*tan lambda- mu)/(cos phi_n + mu*tan lambda)` be proved. I have a relation for back drive efficiency given by `e_b = (1/tan lambda)*(cos phi_n*tan lambda- mu)/(cos phi_n + mu*tan lambda)`   Refer the equation 11 for lead angle back drive efficiency at: http://roton.com/formulas.aspx

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The given relation ` tan lambda = (cos phi_n*tan lambda- mu)/(cos phi_n + mu*tan lambda) ` cannot be proved.

As seen from the link provided in the question the back drive efficiency is given by `e_b = (1/tan lambda)*(cos...

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alfimulia | Student

the equation 10 and 11 is derived from one equation Torque drive.

how to trace back equation 10 and 11, to their origin formula

revert back to their ancestor ?

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