Instrument Systems Flashcards
What is the minimum instruments required by CFR 91.205
Tachometer for each engine
Coolant temp gauge for liquid cooled
Oil temp gauge for air cooled
Manifold pressure gauge for each altitude engine
What are the three types of pressures
Absolute
Gage
Differential
What does the oil pressure use to indicate
Gage pressure
Bourdon tube
What is used to measure oil temp
Bourdon tube
Capillary tube
How to measure fuel pressure
Capsule type measures low gage pressure such as fuel pressure
What are the two types of temp measuring devices
Ratiometer Instrument
Thermocouple instrument
What are the two wires that are connected together for the thermocoupling
Chromel lead
Alumel lead
Hot junction
Cold junction
What are the two types of tachometer
Mechanical
Electrical
What does the mechanical tachometer use
Drive cable
Rotating magnet
Hairspring
Dial
Pointer
What is a green arc mean
Normal operating range
What does yellow arc mean
Caution range
What does white arc mean
Special operating range
What does red arc mean
Prohibited range
What does a red radial line mean
Do not exceed
What does a blue radial line mean
Special operating condition
What does a red triangle, dot or diamond mean
Maximum limit for high transients such as starting
What does a turbine fuel flow indicator use
Aircraft electricity to power an impeller to swirl the fuel
What does the fuel flow indicator on a turbine use to measure
Fuel mass
What does the recip engine use for fuel flow
Fuel pressure
What does the manifold pressure gauge do
Indicate absolute pressure in the intake manifold
What common type of electrically operated oil temp gauge utilize
Wheatstone bridge
Ratiometer
What type of lead is in a recip thermocoupling
Bayonet type
What unit sends the information of engine speed to the tachometer in an electrical system
Three phase ac generator
What does the axial flow compressor turbine use to mesure thrust
EPR
What is the borudon tube used for
To measure high pressures such as hydraulic or fuel pressures
What does a glass cockpit use
LCD
CRT
MFD
What is BITE
Built in test equipment
What type of system do the electronic devices use
Binary system
What does a digital computer contain
CPU
Memory
Input out put devices
What does the computerized fuel system give the pilots
Pounds or gallons of fuel on board
Fuel flow in gallons per hour
Fuel time remaining
Number or gallons of fuel used so far
What does EICAS stand for
Engine indication and crew altering system
What are the classes of fires
Class A
Class B
Class C
Class D
What is a class A fire
Has fuels that are solid combustibles
What is a Class B fire
Fuels that are combustible liquids
What is a class C fire
Involving electrical equipment
What is a Class D fire
Fires that involve metals
What is a class A fire zone
Large volumes of air flowing past regular arranged objects
What is a Class B fire zone
Large volumes of air flowing over aerodynamic clean objects
What is a Class C fire zone
Small air flow
What is a Class D fire zone
Have little to no air running through them
What is a Class X fire zone
Large volumes of air flow at an irregular rate
What are the requirements for fire detection and warning systems
Must have a separate fire detection system for each engine with light and audible sound
No false readings
Can’t be damaged
Must operate off a aircraft electrical system
What are the two types of detectors
Fire
Overheat
What is a thermoswitch
Uses metal to expand when there is a presents of fire. It is also a spot detector
What are the two types of thermoswitch detectors
Single loop
Double loop
What does a thermocoupling do
Two dissimilar metal wires are welded together and sends a loop of electricity between the hot junction and cold junction
Thermocoupling sends the voltage to the warning light how
By sending voltage through the measuring junctions and the temp difference between the junctions allowing current to flow
What detects overheat condition as well as fire protection
Continuous loop fire and overheat detection system
What does a thermistor type continuous loop system do
Salt melts and allows the wire to ground sending voltage through the system
What is the single thermistor type continuous loop referred to as
Fenwall system
What is the two conductor thermistor type continuous loop called
Kiddie system
How do pneumatic type continuous loop systems work
Use a stainless steel tube that contains a gas that absorbed gas when cold and releases when heated
What are the types of pneumatic type of continuous loop
Lindberg system
Systron dinner
What are the types of fire extinguishers agents
Carbon dioxide
Liquid nitrogen
Halogenated hydrocarbons
How do you test a thermocoupling
Press and hold the test button for the specific time period and allows the test junction to heat up causing energy to flow through the wires
What can the kidde system do that the fenwall cannot
It can detect overheat conditions as well as hotspots
How is the systron Donnor system differ from the lindberg system
It has a mixture of two gases and a titanium center wire
What does the integrity switch do for the systron donnor system
This is for when the glass breaks if you try and test the system it will not test
Where are CO2 discharge bottles usually connected to
Recip engine compartments
Where are HRD systems usually located
On most modern jet transport aircraft
What do CO2 bottles have to let them know whether a bottle has discharged or not
Indicator disk
