Nomenclature

Information courtesy of

P	= Power. kW
wm	= Motor speed, sec-1
Jm	= Moment of inertia motor, kgm2
m	= Load inclusive dead weights, linear motion, kg
vo	= Initial load speed linear, m/sec
Jdisc	= Moment of inertia, kgm2
wO	= Initial disk speed, sec-1
d	= Disc thickness, m
DO	= Disc diameter, m
JO	= Total moment of inertia at braked shaft, kgm2
Jdrum	= Moment of inertia for the rope-drum, kgm2
MB	= Braking torque, Nm
ML	= Load torque, Nm
MR	= Retardation torque, Nm
w2	= Max disc speed, sec-1
te	= Effective braking time, sec
t	= Total braking time, sec
n	= Speed, rpm
w	= 0.105 * n, sec-1
tO	= Reaction time for the brake system, sec
t1	= Delay time for overspeed signal, sec
TF	= Temperature factor
LF	= Service-life factor
S	= Total braking distance, m
SO	= Distance travelled during tO, m
Se	= Effective braking distance, m
SF	= Safety-factor, MB/ML
X	= Number of consecutive brakings without any intermediate cooling
TX	= Disc temperature after X brake operations, deg C
	= Calculated constant
Fb	= Braking force, N
a	= No. of calipers per disc
v2	= Max speed load, m/sec
K	= Overspeed in percent
w1	= Speed when overspeed signal is energized