ROTORCRAFT.INFO

Units

Physical measures
Measure	Metric general	SI	Imperial general
Length	m	m	ft
Angular velocity	rpm	rad/sec	rpm
Velocity	km/h	m/s	mph
Mass	kg	kg	lb
Volume	l	l	US gal
Force	N	N	lbf
Power	HP	W	HP
Moment / torque	Nm	Nm	lb-ft
Angle	°	rad	°
Time	h	sec	h
Volumetric flow rate	l/h	l/h	US gal/h
Mass flow rate	kg/h	kg/h	lb/h
Part	%	%	%

Functional measures
Measure	Functional metric	Functional Imperial
Vertical speed	m/s	ft/min
Horizontal speed	km/h	knots
Flight altitude	m	ft
Dimension	m	ft
Flight range	km	NM
Angular velocity	rpm	rpm
Engine's torque	Nm	lb-ft
Engine power	HP	HP
Time	h	h
Rotorcraft mass	kg	lb
Component mass	kg	lb
Volume	l	US gal
Angle	°	°
Mass flow rate	kg/h	lb/h
Volumetric flow rate	l/h	US gal/h
Part	%	%