A/C Structures n Systems Flashcards
What is the straight line crossing the leading and trailing edges called?
Chord Line
What is the angle between the relative wind and the chord of the airfoil called?
Angle of attack
The principle, or primary means of lift production is through…..
Bournelli’s Theorem, the increase in speed of air on the top of an airfoil produces a drop in pressure and this lowered pressure causes lift
What is stall?
The critical angle of attack has been exceeded.
Statistical Quality Control Sampling Inspections (SQC) are:
Acceptance Sampling Plan indicates the percentage of parts that must be inspected, the type of inspection, and what to do if a product fails inspection.
The amount of force or thrust produced by a jet engine depends on ______________________________ that moves through the engine and the extent to which this car can ______________________.
- ) the amount of mass of air
2. ) be accelerated and ejected.
The of a jet engine is regulated primarily by _______________________.
Fuel fed to it.
Which engine section bypasses a large volume of air compared with the amount that passes through the engine.
Fan section of the compressor
In a high bypass engine, with a bypass ratio of 5 to 1, the bypassed delivers approximately ____________________
80% of the thrust.
What engine section drives the engine oil pump?
HPT
Which engine section supplies bleed air for the pneumatic system and the engine air system?
High pressure compressor
TRUE/ FALSE
The fuel/ oil cooler in the oil system pressure stage is used to heat the fuel tank fuel.
TRUE
The main engines ware started through air rotation of the ________.
N2 section
TRUE/ FALSE
When starting the APU the electrical starter is preferred over the air turbine starter method when available.
FALSE
The firewall insulation blanket and fire shield protect the strut and wing from the heat up to 2,000’F for_______________________.
15 mins
A thermistor fire detector is an icon tube that has ________________.
Two conductors surrounded by a variable resistance material.
Which system uses a diaphragm pressure switch?
Pneumatic
What agent is used in the fire extinguisher system?
Halon
A fire condition In either wheelwell can be suppressed for_____________.
No suppression system is installed in the wheel wells.
TRUE or FALSE
Refueling requires airplane electrical power in order to determine how much fuel is in the tank.
FALSE
The capacitance type FQIS shows total fuel quantity with an accuracy of about ___%____.
1%
What component does the processor use to determine fuel volume.
Tank unit
How is the IDG cooled?
Oil, and then that oil is cooled by the heat exchanger using engine fan air.
What is the purpose of the TRU?
Convert AC power to DC
What does the a static inverter do?
Converts battery 2.8v dc power to single phase 115v ac
