FSD International
Commander 115 TC
Pilot Operating Handbook
- 58 –
Copyright© 2008 by FSD International. All rights reserved.
For use with Microsoft Flight Simulator only. Not to be used for real-world aviation.
7 Terminology
Accelerate-Stop Distance
The distance required to accelerate an aircraft to a specified speed and,
assuming failure of an engine at the instant that speed is attained, to bring
the aircraft to a stop.
Accelerate-Go Distance
The distance required to accelerate an aircraft to a specified speed and,
assuming failure of an engine at the instance that speed is attained,
continue takeoff on the remaining engine to a height of 50 feet.
Center of Gravity (CG)
The point at which an airplane would balance if suspended. Its distance
from the reference datum is found by dividing the total moment by the
total weight of the airplane.
Climb Gradient
The demonstrated ratio of the change in height during a portion of a climb,
to the horizontal distance traversed in the same time interval
Directional Gyro (DG)
Directional Gyro is a gyroscopic navigation instrument capable of providing
the pilot with a constant directional reference not subject to temporary
errors characteristic of a magnetic compass. Occasional Magnetic Variation
(MAG-VAR) must still be adjusted. The vacuum type is operated by the air
flow generated by the aircraft vacuum system while electrical type is
operated by aircraft power supply.
Emergency Pressurization
System (EPS).
Activates when the aircraft cabin altitude exceeds the safety limit of 10,500
feet.
Engine Speed (RPM) Gauge Indicates engine rotational speed based on a figure of 100% at 1540
propeller rpm.
Engine Torque Meter
Indicates shaft output torque in percent (100% torque at 1540 rpm equals
1000 shaft horsepower).
Flight Director
A flight director system (FDS) combines many of the primary navigation
instruments to provide an easily interpreted display of the aircraft's flight
path. The pre-programmed path, automatically computed, furnishes the
steering commands necessary to obtain and hold a desired path.
The computed path is controlled by the autopilot (AP), and is slaved to the
current AP mode of operation (HDG/NAV/ALT). In case of ILS approach,
the FDS computer is slaved to the ILS navigation beam for lateral and
vertical steering directions.
Inlet Turbine Temperature
Gauge (ITT)
Indicates operating temperature in the turbine. The red line is used to
indicate maximum allowable temperature.
International standard
atmosphere
(1) The air is a dry perfect gas.
(2) The temperature at sea level is 15° Celsius (59° Fahrenheit).
(3) The pressure at sea level is 29.92 inches of mercury (1013.2 millibars).
(4) The temperature gradient from sea level to the altitude at which the
temperature is -56.5°C (-69.7°F) is -0.00198°C (-0.003564°F) per foot
and zero above that altitude.