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WorksheetsAMT 17 REVIEWER
Total questions: 100
Worksheet time: 50mins
How is anti-icing fluid ejected from the slinger ring on a propeller?
by slip rings and brushes
by centrifugal force
by propeller governors
How is aircraft electrical power for propeller deicer systems transferred from the engine to the propeller hub assembly?
by slip rings and brushes
by centrifugal force
by propeller governors
Which of the following of the propeller fluid anti-icing systems generally use?
Ketone
Isopropyl Alcohol
Alcohol
A propeller synchrophasing system allows a pilot to reduce noise and vibration by
to control engine RPM and reduce vibration
decrease thrust and cause excessive vibration
adjusting the phase angle between the propellers on an aircrafts engines
What is a function of the automatic propeller synchronizing system on multiengine aircraft?
to control engine RPM and reduce vibration
decrease thrust and cause excessive vibration
adjusting the phase angle between the propellers on an aircrafts engines
What unit in the propeller anti-icing system controls the output of the pump?
Rheostat
Governor
Oil Pump
Ice formation on propellers, when an aircraft is in flight, will
decrease thrust and cause excessive vibration
to control engine RPM and reduce vibration
adjusting the phase angle between the propellers on an aircrafts engines
On most reciprocating multiengine aircraft, automatic propeller synchronization is accomplished through the actuation of the
by slip rings and brushes
by centrifugal force
by propeller governors
Proper operation of electric deicing boots on individual propeller blades may best be determined by
feeling the sequence of boots heating and have an assistant observe the load meter indications
propeller manufacturer
antifriction and plasticity characteristics of grease
What type of imbalance will cause a two-blade propeller to have a persistent tendency to come to rest in a horizontal position (with the blades parallel to the ground) while being checked on a propeller balancing beam?
vertical
horizontal
perpendicular
Which of the following determines oil and grease specifications for lubrication of propellers?
feeling the sequence of boots heating and have an assistant observe the load meter indications
propeller manufacturer
antifriction and plasticity characteristics of grease
A powerplant using a hydraulically controlled constant-speed propeller is operating within the propeller's constant-speed range at a fixed throttle setting. If the tension of the propeller governor control spring (speeder spring) is reduced by movement of the cockpit propeller control, the propeller blade angle will
increase, engine manifold pressure will increase, and engine RPM will decrease
to limit the maximum engine speed during takeoff
remain in the full LOW PITCH position
If a blade of a particular metal propeller is shortened because of damage to the tip, the remaining blade(s) must be
reduced to conform with the shortened blade
increased to conform with the shortened blade
necessary to achieve final balancing
Grease used in aircraft propellers reduces the frictional resistance of moving parts and is easily molded into any form under pressure. This statement defines
feeling the sequence of boots heating and have an assistant observe the load meter indications
propeller manufacturer
antifriction and plasticity characteristics of grease
Propeller aerodynamic (thrust) imbalance can be largely eliminated by
correct blade contouring and angle setting
increase, engine manifold pressure will increase, and engine RPM will decrease
to limit the maximum engine speed during takeoff
What is the purpose of an arbor used in balancing a propeller?
to support the propeller on the balance knives
to support the propeller on the governor
to support the propeller on the beta tube
The application of more protective coating on one blade than the other when refinishing a wood propeller
maybe necessary to achieve final balancing
maybe necessary to achieve initial balancing
maybe necessary to reduce final balancing
Apparent engine roughness is often a result of propeller unbalance. The effect of an unbalanced propeller will usually be
greater at a high RPM
lesser at a high RPM
greater at a high airspeed
The propeller governor controls the
oil to and from the pitch changing mechanism
sump to and from the pitch changing mechanism
speed to and from the pitch changing mechanism
Which of the following is used to correct horizontal unbalance of a wood propeller?
solder
metal
tipping
Why is the pulley stop screw on a propeller governor adjustable?
to limit the maximum engine speed during takeoff
remain in the full LOW PITCH position
maintain the RPM, increase the blade angle, and maintain a low angle of attack
During engine operation at speeds lower than those for which the constant-speed propeller control can govern in the INCREASE RPM position, the propeller will
remain in the full LOW PITCH position
remain in the full HIGH PITCH position
remain in the full IDLE position
When engine power is increased, the constant-speed propeller tries to function so that it wil
maintain the RPM, increase the blade angle, and maintain a low angle of attack
maintain the RPM, decrease the blade angle, and maintain a low angle of attack
maintain the RPM, maintain the blade angle, and maintain a low angle of attack
During the on-speed condition of a propeller, the
centrifugal force of the governor flyweights is equal to the speeder spring force
aerodynamic force of the governor flyweights is equal to the speeder spring force
thrust force of the governor flyweights is equal to the speeder spring force
What actuates the pilot valve in the governor of a constant-speed propeller?
governor flyweights
propeller counterweights
spring load
What action takes place when the cockpit control lever for a hydromatic, constant-speed propeller is actuated?
compression of the speeder spring is changed
blade angle will decrease and RPM will increase
blade angle will increase and RPM will increase
Inspection of propeller blades by dye penetrant
inspection is accomplished to detect
Corrosion at tip
Crack or defects
Torsional Stress
What will happen to the propeller blade angle and the engine RPM if the tension on the propeller governor control spring (speeder spring) is increased?
blade angle will decrease and RPM will increase
blade angle will increase and RPM will increase
blade angle will decrease and RPM will decrease
The Primary purpose of propeller is to
Change Engine Horse Power to thrust
create lift on fixed airfoils of an aircraft
Provide static and dynamic stability of an aircraft in flight
The actual distance a propeller moves forward through the air during one revolution is known as
Effective Pitch
Geometric Pitch
Relative Pitch
Which of the following is cause for rejection of
wooden propeller
An oversize hub or bolthole, or elongated bolt holes
Solder missing from screw head securing metal
No protective coating of propeller
Which of the following statement concerning the installation of new fixed pitch wooden propeller is true
NAS close tolerance bolts should be used to install the propeller
If a separate metal hub is used, final track should be accomplished prior to installing the hub in the propeller
Inspect the bolt for tightness, after first flight
and again for next 25 hours of flying
The thrust of rotating propeller is a result of
an area of low pressure behind the propeller
the angle of relative wind and rotational velocity of the propeller
an area of decrease pressure immediately in front of propeller blades
which of the following is identified as the cambered or curved side of a propeller blade, corresponding to the upper surface of a wing airfoil section
blade face
blade chord
blade back
Which of the following function require the used of blade station
measuring blade angle
Indexing blade
Propeller balancing
The blade angle of a fixed pitch propeller
Is smallest at tip
Is greatest at tip
Increase in proportion to the distance each section is from the hub
Which of the following function require the used of blade station
index mark on the blade shank
hub centerline
blade base
Propeller blade station are number increase from
leading edge to trailing edge
tip to hub
hub to tip
Actual Propeller distance move per one revolution
Geometric Pitch
Effective Pitch
Propeller Slip
Propeller theoretical distance move per one revolution
Geometric Pitch
Effective Pitch
Propeller Slip
Aviation has come a long way since the Wright brothers first took to the skies in
1913
1903
1923
1933
The first version of a propeller was derived from a ___________ design which is invented by the ancient Greek scientist Archimedes in 200 BC.
wings
rotating screw
turbine
When the centrifugal force acting on the propeller governor flyweights overcomes the tension on the speeder spring, a propeller is in what speed condition?
overspeed
normal speed
aft
What operational force causes the greatest stress on a propeller?
centrifugal force
aerodynamic twisting force
thrust bending force
What operational force tends to increase propeller blade angle?
centrifugal force
aerodynamic twisting force
thrust bending force
How is a propeller controlled in a large aircraft with a turboprop installation?
engine power lever
engine speed lever
engine fuel lever
How does the aerodynamic twisting force affect operating propeller blades?
it tends to turn the blades to a high blade angle
it tends to turn the blades to a low blade angle
it tends to turn the blades to a aft blade angle
Which of the following best describes the blade movement of a propeller that is in the high RPM position when reversing action is begun?
low pitch directly to reverse pitch
high pitch indirectly to reverse pitch
low pitch directly to feather pitch
Propellers exposed to salt spray should be flushed with
fresh water
soap with water
alcohol
How can a steel propeller hub be tested for cracks?
by magnetic particle inspection
by eddy current testing
by non destructive testing
Which of the following functions requires the use of a propeller blade station?
measuring blade angle
pitch changing oil
plane of rotation
The propeller blade angle is defined as the acute angle between the airfoil section chord line (at the blade reference station) and which of the following?
the plane of rotation
effective pitch
measuring blade angle
During which of the following conditions of flight will the blade pitch angle of a constant-speed propeller be the greatest?
high speed, high altitude cruising flight
low speed, high altitude cruising flight
high speed, low altitude cruising flight
The pitch-changing mechanism of the hydromatic propeller is lubricated by
the pitch changing oil
the feather changing oil
the reverse changing oil
What is the result of moving the throttle on a reciprocating engine when the propeller is in the constant-speed range with the engine developing cruise power?
opening the throttle will cause an increase in blade angle
closing the throttle will cause an decrease in blade angle
What is indicated when the front cone bottoms while installing a propeller?
Propeller-dome combination is incorrect.
Blade angles are incorrect.
Rear cone should be moved forward
The primary purpose of the front and rear cones for propellers that are installed on splined shafts is to
position the propeller hub on the splined shaft.
prevent metal-to-metal contact between the propeller and the splined shaft.
reduce stress between the splines of the propeller and the spines of the shaft.
If the propeller cones or hub cone seats show evidence of
the pitch change stops were located incorrectly, causing the cone seats to act as the high pitch stop.
the propeller retaining nut wast not tight enough during previous operation.
the front cone was not fully bottomed against the crankshaft splines during installation.
If a flanged propeller shaft has dowel pins
install the propeller so that the blades are positioned for hand propping.
the propeller can be installed in only one position.
check carefully for front cone bottoming against the pins.
How can a steel propeller hub be tested for cracks?
By anodizing
By magnetic particle inspection
By etching
What operational force tends to increase propeller blade angle?
Centrifugal Twisting Force
Aerodynamic Twisting Force
Thrust Bending Force.
The actual distance a propeller moves forward through the air during one revolution.
Effective Pitch
Geometric Pitch
Relative Pitch
The Thrust produce by rotating propeller is a result of
An area of low pressure behind the propeller blades
An area of decrease pressure immediately in front of propeller blades
the angle of relative wind and rotational velocity of the propeller
Blade angle is an angle formed by a line perpendicular to the crankshaft and a line formed by the
relative wind.
chord of the blade.
blade face.
propeller blade station are measured from the
index mark on the blade shank
hub centerline
blade base
have the advantages of decreasing the length of the landing roll
Controllable Propeller
Reversing Propeller
Fixed Pitch Propeller
The main disadvantages of the reversing system
increase blade damage from stones
reduce wear brakes
reduce landing roll
The farther aft the throttles are moved, the ______ the reverse thrust.
Greater
Lesser
The reversing operation is controlled in the cockpit by the
mixture control
Engine
Throttle Control
Equipment is turned on before entering icing conditions and is designed to prevent ice from forming
De-Icing
Anti-Icing
Propeller Heater
What chemical do we use to remove ice in a propeller?
alcohol
kerosene
gasoline
Equipment is designed to remove ice after it begins to accumulate on the airframe or propeller
Anti-icing
De-icing
Propeller Heater
Which of the following statements about constant- speed counterweight propellers is also true when refer- ring to two-position counterweight propellers?
Blade angle changes are accomplished by the use of two forces, one hydraulic and the outer centrifugal.
Since an infinite number of blade angle positions are possible during flight, propeller efficiency is greatly improved
The pilot selects the RPM and the propeller changes pitch to maintain the selected RPM.
During which of the following conditions of flight will the blade pitch angle of a constant-speed propeller be the greatest?
Approach to landing.
Climb following takeoff.
High-speed, high-altitude cruising flight.
Why is a constant-speed counterweight propeller nor- mally placed in full HIGH PITCH position before the engine is stopped?
To prevent exposure and corrosion of the pitch changing mechanism
To prevent hydraulic lock of the piston when the oil cools.
To prevent overheating of the engine during the next start.
Where are the high and low pitch stops of a Hamilton Standard constant-speed or two-position counterweight propeller located?
In hub and blade assembly.
In the dome assembly.
In the counterweight assembly.
(1) During takeoff, propeller thrust (pull) is greatest if the blade angle of attack is low and the engine power setting is high.
(2) With the aircraft stationary, propeller thrust is greatest if the blade angle of attack is high and the engine power setting is high.
Regarding the above statements,
only No.1 is true
only No.2 is true
both No. 1 and No. 2 are true.
What is indicated when the front cone bottoms while installing a propeller?
Propeller-dome combination is incorrect.
Blade angles are incorrect.
Rear cone should be moved forward.
The primary purpose of propeller is to
create lift on the fixed airfoils of an aircraft.
change engine horsepower to thrust.
provide static and dynamic stability of an aircraft in flight
It is important that nicks in aluminum alloy propeller blades be repaired as soon as possible in order to
maintain equal aerodynamic characteristics
between the blades.
eliminate stress concentration points.
equalize the centrifugal loads between the blades.
It has the blade pitch, or blade angle, built into the propeller.
Fixed-Pitch Propeller
Ground Adjustable Propeller
Controllable Pitch Propeller
It is designed to permit a change of blade angle when the aircraft is on ground.
Ground Adjustable Propeller
Fixed-pitch Propeller
Controllable Pitch Propeller
is one of which the blade angle can be changed while the aircraft is in flight.
Ground Adjustable Propeller
Fixed-Pitch Propeller
Controllable Pitch Propeller
It is a system in which the propeller blade angle is varied by the action of a governor to maintain a constant speed.
Automatic Propeller
Constant Speed Propeller
Two Position Propeller
The owner/ operator should fly the aircraft at least once a month for a minimum of 30 minutes.
Flyable Storage
Temporary Storage
Indefinite Storage
Under this storage the regular engine oil is replaced with a preservative oil then the aircraft is flown for 30 minutes.
Flyable Storage
Temporary Storage
Indefinite Storage
This storage is generally defines as nonuse of the aircraft for 90 days.
Flyable Storage
Temporary Storage
Indefinite Storage
What kind of preservative oil is the replacement of engine oil?
MIL-C-6529 Type II
MIL-C-6259 Type II
MIL-C-16173 Type II
MIL-C-17163 Type II
It is the thick, round portion of the propeller blade near the hub and is designed to give strength to the blade.
Blade Shank
Blade Butt
Blade Twist
It is the distance from the center of the propeller hub along the span of the propeller blade.
Blade Station
Blade Shank
Blade Butt
What is the most outward portion of the propeller blade?
Blade Root
Blade Butt
Blade Tip
The propeller is divided into small segments or sections so that the performance of each segments may be critically analyzed.
Blade Element Theory
Blade Station
Propeller Aerodynamic
It has a weight clamped to the blade root to help move the blades into high pitch.
Counterweight Propellers
Constant Speed Propeller
Hydromatic Feathering Propeller
It is accomplished by releasing the governor oil pressure, allowing the counterweights and feathering spring to feather the blades.
Feathering
Idle
Locks
It is finished to the desired airfoil shape by machining and manual grinding.
Aluminum Propellers
Steel Propellers
Composite Propellers
It is found primarily on transport aircraft and they are normally of hollow construction which help to reduce weight
Aluminum Propellers
Steel Propeller
Composite Propeller
It offers only a significant weight reduction, but also improved damage tolerance, vibration damping, and design flexibility.
Aluminum Propeller
Steelp Propeller
Composite Propeller
It consists of a solid aluminum- alloy spar around which a fiberglass shell with the correct airfoil.
Composite Propeller
Steel Propeller
Aluminum Propeller
It is a metal, wood, or plastic structure designed for attachment to the shank end of the blade.
Blade Cuff
Steel Blades
Blade Boots
BONUS QUESTION: When did the Wright brothers take their first flight?
1903
1913
1906
1916
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