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Private Pilot : 2007年 Airman Knowledge Test Question (Written Exam)
The principal reason the shaded area of a Height vs. Velocity Chart should be avoided is
A) turbulence near the surface can dephase the blade dampers.
B) rotor RPM may decay before ground contact is made if an engine failure should occur.
C) insufficient airspeed would be available to ensure a safe landing in case of an engine failure.
Under what conditions, if any, may a private pilot operate a helicopter under special VFR at night within Class D airspace?
A) The helicopter must be fully instrument equipped and the pilot must be instrument rated.
B) The flight visibility must be at least 1 mile.
C) There are no conditions; regulations permit this.
Under which condition will an airship float in the air?
A) When buoyant force equals horizontal equilibrium existing between propeller thrust and airship drag.
B) When buoyant force is less than the difference between airship weight and the weight of the air volume being displaced.
C) When buoyant force equals the difference between airship weight and the weight of the air volume being displaced.
Which takeoff procedure is considered to be most hazardous for an airship?
A) Maintaining only 50 percent of the maximum permissible positive angle of inclination.
B) Failing to apply full engine power properly on all takeoffs, regardless of wind.
C) Maintaining a negative angle of inclination during takeoff after elevator response is adequate for controllability.
The pressure height of an airship is the altitude at which
A) the airship would be unable to gain more altitude.
B) gas pressure would reach 3 inches of water.
C) the ballonet(s) would be empty.
If an airship should experience failure of both engines during flight and neither engine can be restarted, what initial immediate action must the pilot take?
A) The airship must be driven down to a landing before control and envelope shape are lost.
B) The emergency auxiliary power unit must be started for electrical power to the airscoop blowers so that ballonet inflation can be maintained.
C) Immediate preparations to operate the airship as a free balloon are necessary.
An airship descending through a steep temperature inversion will
A) show no change in superheat as altitude is lost.
B) show a decrease in superheat as altitude is lost.
C) become progressively lighter, thus becoming increasingly more difficult to drive down.
Below pressure height, each 5 °F of positive superheat amounts to approximately
A) 1 percent of gross lift.
B) 2 percent of net lift.
C) 2 percent of total lift.
What is airship superheat?
A) A condition of excessive exterior temperature of the envelope.
B) The temperature of the lifting gas exceeding the red line.
C) The difference between outside air temperature and the temperature inside the envelope.
Which action is necessary in order to perform a normal descent in an airship?
A) Valve gas.
B) Valve air.
C) Take air into the aft ballonets.
Private Pilot Knowｌedge Test (Private Written Exam) 05/23/2007 : 2008年の問題へ