Shaft Angle & Cupping

Account for shaft-angle thrust penalty and cup-induced effective pitch gain.

Inputs

Shaft angle (deg)

Cup amount (mm)

Pitch ratio (P/D)

Propeller D (m)

Folding prop

Stern pocket

Advance speed V_a (kn)

Results

Thrust factor

—

Effective Δ(P/D)

—

Net effective pitch

—

m

Fold η factor

—

Effective V_a

—

kn