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Coupling torque
public
Calculates coupling torque requirements based on electric motor nominal torque and application safety factor.
Required torque
$$ T_{cn} = {T_n . f_s} $$
Electrical motor nominal torque
public
Electrical motor nominal torque calculation based on motor nominal power and rotational speed.
Motor nominal torque
$$ T_n = {9550 \cdot \left({ {P_n \over n_n} }\right)} $$
Euler's number
public
Euler's number
$$ e = {2.71828} \: $$
Gear module
public
Gear module from reference diameter and number of teeth
Gear module
$$ m_{gd} = {{d_{r1} \over z_g}} $$
Gear module
public
Gear module from reference pitch
Gear module
$$ m_{gp} = {p_r \over \pi} $$
Gear module normal
public
Normal gear module.
Module
$$ m_n = {4} \: mm $$
Gear reduction ratio
public
Reduction ratio of two gear wheels using number of teeth
First stage ratio
$$ i_{gr1} = {z_2 \over z_1} $$
Gearbox reduction ratio
public
Reduction ratio of 3 stage gearbox
Three stage gearbox ratio
$$ i_{gb3} = {i_{gr1} . i_{gr2} . i_{gr3}} $$
Gravity of Earth
public
Standard Earth gravity
Gravity
$$ g = {9.80665} \: m/s^2 $$
No of teeth
public
Number of teeth of gear wheel.
No. of teeth
$$ z_1 = {20} \: $$
Pipe friction head loss
public
Calculates head loss due to wall friction in pipelines using Darcy friction factor.
Head loss
$$ Hf_{pipe} = {f_{Darcy} \cdot \left({ \left({ L_{pipe} \cdot V_{fluid} ^ 2 }\right) \over \left({ ID_{pipe} \cdot 2 \cdot g }\right) }\right)} $$
Reference diameter
public
Reference diameter (pitch diameter) of straight cut cylindrical gear.
Reference diameter
$$ d_{r1} = {m_n \cdot z_1} $$
Rope reeving efficiency
public
Calculate efficiency of rope reeving arrangement
Reeving Arrangement Efficiency
$$ \eta_{reeving} = {\eta_{sheave} ^ \left({ n_{sheaves} }\right)} $$
Rope sheave efficiency
public
Calculates sheave efficiency in a rope reeving arrangement based on Euler-Eytelwein equation
Sheave efficiency
$$ \eta_{sheave} = {1 \over \left({ e ^ \left({ \mu \cdot \theta }\right) }\right)} $$
System curve factor
public
Determines relationship between flow and head loss in a pipeline
$$ k_{system} = {h_{loss} \over q ^ 2} $$
Wire rope breaking force
public
Calculate minimum required breaking force of a wire rope for a given reeving arrangement and a safety factor
Minimum required breaking force
$$ F_{breq} = {\left({ P_{load} \cdot g \cdot s_f }\right) \over \left({ n_{falls} \cdot \eta_{reeving} }\right)} $$