Brake Power (P_B)

Compute P_B via (A) P_Dη₀, (B) full chain (P_E, η_H, η_R, η₀), or (C) engine torque & RPM.

Method

Pick the route matching your available data.

A) From Delivered Power

P_D (kW)

η₀ (propeller eff.)

P_B = P_D / η₀

Notes (optional)

P_B: — kW (— hp)

Echo: —

Brake Power is the engine crankshaft power. For shaft power at propeller, apply mechanical/transmission efficiency if needed.

Report: Brake Power (P_B)

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Notes

A) \( P_B = \dfrac{P_D}{\eta_0} \)

B) \( P_B = \dfrac{P_E}{\eta_H\,\eta_R\,\eta_0} \)

C) \( P_B = 2\pi n Q \) with \( n=\mathrm{RPM}/60 \) and \( Q \) in kN·m.