Performance And Operation Limitation Flashcards
The three major factors that affect aircraft performance are
a) Density altitude, weight, and wind.
b) Altimeter setting, OAT, and AGL altitude.
c) Pilot, aircraft, and environment.
A) Density altitude, weight, and wind.
Any factor that affects engine and rotor efficiency affects performance.
a) True.
b) False.
A) True.
Humidity is the single most important factor that affects helicopter performance.
a) True.
b) False.
B) False
Humidity alone is usually not considered an important factor in calculating density altitude and helicopter performance; however, it does contribute.
a) True.
b) False.
A) True.
At higher gross weights,
a) The decreased power required to hover produces less torque, which means less anti-torque thrusts is required.
b) The increased power required to hover produces more torque, which means less anti-torque thrust is required.
c) The increased power required to hover produces more torque, which means more anti-torque thrust is required.
C) The increased power required to hover produces more torque, which means more anti-torque thrust is required.
In some helicopters during high altitude operations, the maximum anti-torque produced by the tail rotor during a hover may not be sufficient to overcome torque, even if the gross weight is within limits.
a) True.
b) False.
A) True.
Translational lift occurs any time
a) Left pedal is applied.
b) During the transition from hover to forward flight, and is responsible for the lateral cyclic input required by the pilot during takeoff.
c) There is relative airflow over the rotor disk.
C) There is relative airflow over the rotor disk.
When taking off into a headwind, more distance is required to accelerate through translational lift.
a) True.
b) False.
B) False
When taking off into a headwind, effective translational lift is achieved earlier, resulting in more lift and a steeper climb angle.
a) True.
b) False.
A) True
When taking off with a tail wind, effective translational lift is achieved earlier, resulting in more lift and a steeper climb angle.
a) True.
b) False.
B) False
In developing performance charts, aircraft manufacturers make certain assumptions about the condition of the helicopter and the ability of the pilot. These include
a) The helicopter is in good operating condition and the engine is developing its rated power.
b) The pilot is following normal operating procedures and to have average flying abilities.
c) All are correct.
C) All are correct
When developing helicopter performance charts, the manufacturer assumes the pilot has average flying abilities. Average in this case means
a) Exceptional skills.
b) Capable of doing each of the required tasks correctly and at the appropriate times.
c) Capable of making decisions in a quick manner.
B) Capable of doing each of the required tasks correctly and at the appropriate times.
Hover charts are provided for in ground effect hover and out of ground effect hover under various conditions of
a) Gross weight, altitude, temperature, and power
b) Effective translational lift and power.
c) Altitude and temperature.
A) Gross weight, altitude, temperature, and power
Hover charts are provided for in ground effect hover and out of ground effect hover under various conditions of
a) Gross weight, altitude, temperature, and power
b) Effective translational lift and power.
c) Altitude and temperature.
A) Gross weight, altitude, temperature, and power
The IGE hover ceiling is usually higher than the OGE hover ceiling because of
a) Effective translational lift.
b) The added lift benefit produced by ground effect.
c) Settling with power developing at higher altitudes.
B) The added lift benefit produced by ground effect.
