Piston 2 - Week 2C
What kind of loads can this kind of bearing handle? #2
Radial
Axial & radial
Tangential
Axial
What kind of bearing is this? #4
Roller
Tapered roller
Ball
Plain
What kind of bearing is this? #5
Plain
Roller
Ball
Tapered Roller
What kind of loads can this kind of bearing handle? #1
Tangential
Axial
Axial & radial
Radial
What kind of bearing is this? #3
Roller
Tapered Roller
Plain
Ball
What kind of bearing load is pointed to by A?
Axial
Combined
Tangential
Radial
What kind of loads can this kind of bearing handle? #3
Axial & radial
Tangential
Axial
Radial
What kind of loads can this kind of bearing handle? #6
Axial & radial
Tangential
Axial
Radial
What kind of bearings are used for crankshafts and rods on an aircraft engine?
Roller
Tapered roller
Plain
Ball
How are bearings cleaned?
Water wash, blow dry with shop air - not spinning the bearing, reapply grease or oil immediately
Solvent wash, blow dry with shop air - spinning the bearing, reapply grease or oil immediately
MEK wash, blow dry with shop air - not spinning the bearing, reapply grease or oil immediately
Solvent wash, blow dry with shop air - not spinning the bearing, reapply grease or oil immediately
What kind of bearing is this? #2
Plain
Ball
Roller
Tapered roller
What part of the bearing is pointed to by A?
Outer race
Inner race
Ball
Cage
What kind of loads can this kind of bearing handle? #4
Tangential
Axial & radial
Radial
Axial
What part of the bearing is pointed to by C?
Ball
Inner race
Cage
Outer race
What kind of bearing load is pointed to by C?
Combined
Radial
Tangential
Axial
What is the purpose of a bearing?
To absorb radial and withstand axial forces
To withstand the forces in an engine with maximal friction and heat build up
To absorb the forces in an engine with maximal friction and heat build up
To withstand the forces in an engine with minimal friction and heat build up
What kind of bearing load is pointed to by B?
Tangential
Radial
Combined
Axial
What part of the bearing is pointed to by D?
Outer race
Ball
Cage
Inner race
What kind of bearing is this? #1
Roller
Plain
Tapered roller
Ball
What kind of loads can this kind of bearing handle? #5
Tangential
Axial & radial
Axial
Radial
What part of the bearing is pointed to by B?
Outer race
Ball
Cage
Inner race
What kind of gearing systems are used for propeller reduction?
Bevel gears & worm gears
Mitre gears & screw gears
Spur gears & worm gears
Spur gears & planetary gear sets
Which of the following is correct?
Engine speed will always be slower than propeller speed
Propeller speed will always be slower than engine speed
Propeller speed does not matter
Engine speed does not matter
Gear ratios are always expressed as?
Output speed : Input speed
Input speed : Output speed
What is the purpose of a geared propeller?
To allow the propeller to spin at its optimal speed
To allow the engine to spin at its optimal speed
To increase the propeller speed
To allow both the engine and propellers to spin at their optimal speeds
When does the thermostat in a liquid cooling system open?
When the outside air temperature is equal to or below the engine temperature
When the engine comes up to normal operating temperature
When the engine is below normal operating temperatures
When the engine is cold
Which of the following best describes a liquid cooling system?
Heat is transferred from the engine to a liquid which has the heat extracted from it by air in a radiator
Heat is transferred from the engine to the radiator by conduction where the heat is extracted by air
Heat is transferred from the engine to a liquid which has the heat extracted from it by another liquid in a radiator
Heat is transferred from the engine to air which has the heat extracted from it by a liquid in a radiator
How is the gearbox oil cooled on the DA42?
By a gearbox oil to air heat exchanger
By a gearbox oil to air radiator
By an gearbox oil to engine coolant heat exchanger
By air flowing past the gearbox
What parts are there in a liquid cooling system?
The reservoir, radiator, thermostat and water jackets
The engine driven coolant pump, reservoir, radiator and water jackets
The engine driven coolant pump, reservoir, radiator, thermostat and water jackets
The engine driven coolant pump, radiator, thermostat and water jackets
What is the purpose of the baffles and baffle seals?
To force air through the cooling fins on the cylinders
To force liquid through the cooling fins on the cylinders
To force air around the cylinders
To force air away from the hot parts of the engine
What kind of cylinder head temperature probes are used?
Type E and type Q
Clip on and slip on types
Thread in and gasket types
Bayonet & gasket types
What is used to determine if winter baffles are required?
CHT
EGT
OAT
IAT
What is typically done in extremely cold operation of aircraft engines?
Winter baffles will be installed to reduce the cowl opening size
Winter baffles will be installed to increase the cowl flap size
Winter baffles will be installed to increase the cowl opening size
Winter baffles will be installed to reduce the cowl flap size
What is used to cool the internal components of the engine?
Oil
Direct conduction
Air
Coolant
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