R66 POH - PREFOMANCE DEFINITION

KIAS

Knots Indicated Airspeed is speed shown on the airspeed indicator.

KCAS

Knots Calibrated Airspeed is speed shown on the airspeed indicator corrected for instrument and position error.

KTAS

Knots True Airspeed is airspeed relative to undisturbed air.

Vne

Never-Exceed Airspeed.

Vy

Speed for best rate of climb

Vh

Stabilized level-flight speed at maximum continuous power.

MSL Altitude

Altitude above mean sea level, indicated by the altimeter (corrected for position and instrument error) when the barometric subscale is set to the atmospheric pressure existing at sea level.

Pressure Altitude

Altitude indicated by the altimeter (corrected for instrument error) when the barometric subscale is set to 29.92 inches of mercury (1013.2mb).

Density Altitude

Altitude in ISA conditions at which the air would have the same density (it is pressure altitude corrected for OAT).

ISA

International Standard Atmosphere exists when pressure is 29.92 inches of mercury at sea level, temperature is 15°C at sea level, and temperature decreases 1 .98 °C per 1000 feet of altitude.

SHP

Shaft Horsepower is actual power delivered by the engine output shaft. (Shown by torque meter as percentage of 270 horsepower when N2 is 100%).

RPM

Revolutions Per Minute or speed of engine or rotor. Shown on R66 tachometers in percent. 100% engine output shaft (N2 ) RPM = 6016. 100% gas generator (N 1) RPM = 50970. 100% main rotor RPM = 408.

N1

Engine gas generator (compressor) RPM.

N2

Engine output shaft RPM.

MGT

Measured Gas Temperature (in turbine section).

MCP

Maximum Continuous Power (83% torque in the R66).

TOP

Takeoff Power ( 100% torque, limited to 5 minutes in the R66).

TOGW

Takeoff Gross Weight.

OAT

Outside Air Temperature.

GPH

Gallons Per Hour.

AGL

Above Ground Level.

IGE

In Ground Effect.

OGE

Out of Ground Effect.