FES Discus 2c - Abbreviations and Unit Conversions

FES Flight Manual, v1.18 May 2020
Page 7 of 35
1.6 Abbreviations
CAS
Calibrated airspeed is an indicated airspeed of a sailplane, corrected for the
position of the static ports on the fuselage and measurement error of the
instrument. Calibrated airspeed is equal to true airspeed at sea level in the
standard international atmosphere.
C.G.
Centre of gravity
daN
Decanewton
FES
Front Electric Sustainer/Self-launcher
FCU
FES Control Unit
FR
Flight Recorder
h
Hour
IAS
Indicated airspeed is the speed of a sailplane as measured by aircraft speed
indicator connected to its pitot-static system and is uncorrected for the system
error
MOP
Means Of Propulsion sensor
m
Meter
kg
Kilogram
km
Kilometre
s
Second
Ltr
Litre
L/D
Lift to Drag ratio (glide ratio)
°C
Degrees Celsius
1.7 Unit conversions
1 bar = 14,5 pounds per square inch (psi)
1 decanewton (daN) = 2,25 pounds force
1 kilogram (kg) = 2,2 pounds (lbs)
1 meter (m) = 39,4 inches (in.) = 3,28 feet (ft.)
1 millimeter (mm) = 0,0394 inches (in.)
1 liter = 0,2642 U.S. gal
1 square meter (m
2
) = 10,764 sqare feet (sq.ft)
1 kg/m
2
= 0,204 lbs/sq.ft
1 m/s = 1,944 knots (kts)
1 km/h = 0,5396 kts
1 kW = 1,34 HP