TM 55-1520-228-10
7-6
LIST OF ABBREVIATIONS (Cont)
Abbreviation Definition Abbreviation Definition
HR Hour NM Nautical Mile
IAS Indicated airspeed %Q Percent torque
IGE In ground effect PRESS Pressure
IN Inch PSI Per square inch
IN HG Inches of mercury R/C Rate of climb
IR Infrared R/D Rate of descent
KIAS Knots indicated airspeed RPM Revolutions per minute
KN Knot SPEC Specifications
_
Degree STA Station
OGE Out of ground effect SQ FT Square feet
LB Pound TAS True airspeed
LB/HR Pounds per hour TOT Turbine outlet temperature
LIM Limit TRQ Torque
MAX Maximum USAASTA United States Army Aviation
MIN Minute
Systems Test Activity
MIN Minimum VDC Volts, direct current
MM Millimeter V
NE
Velocity, never exceed
N1 Gas producer speed
(airspeed limitation)
N2 Power turbine speed XMSN Transmission
NO. Number
SECTION II. TEMPERATURE CONVERSION
7-11. FREE AIR TEMPERATURES.
A temperature conversion chart (figure 7-1) is included
for the purpose of converting Fahrenheit temperature to
Celsius.
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