Cabin Atmosphere
How does a continuous-flow oxygen system operate?
Oxygen flows from a charged cylinder through a high-pressure line to a reducing valve and to mask outlets
Why should a pneumatic system be purged periodically?
To remove contamination and moisture.
What flight instruments are usually connected to a pitot-static system?
Rate of climb, airspeed, and altimeter.
What are three basic autopilot components?
Sensing elements(Gyros); Output elements (Servos); Command elements (Flight Controller); Computing elements(Computer and Amplifier).
What is the purpose of a fuel jettisoning (dump) system?
To reduce the weight of the aircraft to a specified landing weight.
How does a basic pressure-demand oxygen system operate?
Oxygen flows from a charged cylinder to a pressure-demand regulator, adjustable by each crewmember.
What are the different types of accumulators?
Spherical and cylindrical.
What does a tachometer indicate?
Crankshaft or main turbine rotor speed.
What are the sensing elements of an autopilot system?
A directional gyro, turn-and-bank gyro, attitude gyro, and altitude control.
2 What is the purpose of fuel tank internal baffles?
To resist fuel surging caused by changes in the attitude of the aircraft.
What type of oxygen must be used in aircraft?
Aviators' breathing oxygen.
What color is mineral base hydraulic fluid?
RED
What type of indicating system is a turbine-engine exhaust gas temperature system?
A thermocouple-type system.
What are the actuating (output) elements of an autopilot system?
Servos that operate the control surfaces.
Why should you wait a period of time after fueling before checking fuel sumps?
To allow time for water and sediment to settle to the drain point.
What must be accomplished if an oxygen system has been open to atmosphere for 2 hours or more?
The system must be purged to remove moisture.
What would cause a hydraulic filter to go into open bypass, allowing unfiltered fluid into the system?
A clogged filter.
What does a yellow arc on an instrument dial indicate?
Caution.
What is an ADF
An automatic direction finder.
What are two types of fuel tanks (cells)?
A bladder-type fuel tank and an integral fuel tank.
What is used to purge oxygen lines of moisture?
Dry nitrogen, dry air, or oxygen.
What feature is built into a hydraulic pump-drive system to prevent engine damage in the event of pump seizure or overload?
A shear section in the pump-drive shaft.
Why are slippage marks used on instrument glass covers?
To indicate glass rotation in the bezel.
What is a DME?
Distance measuring equipment.
What are four types of fuel quantity gauges in use today?
Sight glass, mechanical, electrical, and electronic