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Propellers Unit 1 Flashcards | StudBud
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Propellers Unit 1
Propellers Unit 1
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1
On the pt-6 engine, in the beta range, blade angle information is provided to the propeller governor by what assembly?
Follower sleeve
Beta feedback ring
Beta tube
2
Austrailia is famous for animals like koala bear , emu , __________
Kookabura
Elephant
Kokkabura
Black buck
3
The two types of McCauley constant-speed propellers are the
threaded; threadless
steel; composite
aluminum; composite
4
What operational force causes propeller blade tips to lag in the opposite direction of rotation?
Torque-bending
Centrifugal-twisting
Thrust-bending
5
During the on-speed condition of a propeller, the
centrifugal force of the gov flyweights is equal to speeder spring force.
centrifugal force on the governor flyweights is greater than speeder spring
speeder spring is less than the centrifugal force on the gov flyweights
6
The ______________________ is identified as the cambered or curved side of a propeller blade?
blade leading edge
blade face
blade back
7
What is the first day of spring also called?
Good Friday
vernal equinox
summer solstice
opening day
8
There are approximately one million of which animals living in Austrailia?
Zebras
Great White Sharks
Tasmanian Tigers
Camels
9
What do the movies
Palm Springs
and
Groundhog Day
have in common?
The movies are about groundhogs
The main character gets turned into an animal
They are based in California
Characters are forced to relive the same day over and over
10
General Trivia: What is the smallest country in the world?
Vatican City
Luxembourg
Malta
Maldives
11
In the movie
Cars
, Radiator Springs becomes deserted because ___ ?
a new mayor took over the city
the city kept losing races
a highway was built around it
most of the cars moved West
12
Which of the following characteristics is/are shared by both counterweight and two-position propellers?
An infinite number of blade angles leads to greater efficiency
Pilot selects RPM & the propeller changes pitch to maintain selected RPM
Blade angle changes are accomplished by the use of two forces
13
Hartzell, non-counterweighted, propellers use oil pressure to increase blade angle and _________ to decrease blade angle
centrifugal force acting on counterweights
centrifugal force
centrifugal twisting force
14
Trivia Question: How many continents are there in the world?
9
4
3
7
15
During the springtime, why is the day longer than the night?
Because of how quickly the sun orbits the Earth
Because the Earth stops rotating
Because of the pollen in the atmosphere
Because of how the Earth tilts towards the sun
16
Which of the following is NOT a spring flower?
lilacs
daffodils
roses
tulips
17
The primary purpose of a cuff on a propeller is to
increase the flow of cooling air to the engine nacelle
distribute anti-icing fluid
Strengthen the propeller
18
An aircraft operating in the beta range
is used to produce zero or negative thrust.
is used to achieve maximum thrust during takeoff.
refers to the most fuel-efficient pitch range to use at a given engine RPM
19
The controls for a typical TPE-331 turboprop installation consist of
throttle, propeller lever, mixture
power lever, speed lever
power lever, propeller lever, condition lever
20
What is the primary purpose of the metal tipping covering the blade tips and leading edge of a wood propeller blade?
to increase the lateral strength of the blade
to increase the longitudinal strength of the blade
to prevent impact damage to the tip and leading edge of the blade
21
Which forces or combination of forces moves the blades of a constant-speed counterweight propeller to the High Pitch
Engine oil pressure acting on the propeller piston-cylinder arrangement
engine oil pres on the propeller piston & centrifugal frce on cntr weights
Centrifugal force acting on the counterweight
22
The Hartzell constant speed prop that uses oil pres to decrease blade angle & counterweights to increase blade angle is
direct drive model
steel hub counterweight model.
non-counterweight
23
At speeds below flight idle the propeller blade angle is controlled by the
speed lever
propeller lever
power lever
24
The centrifugal twisting forces acting on a propeller blade is
greater than aerodynamic twist force and moves the blade to a lower angle
less than the aerodynamic twist force & moves the blade to a lower angle
greater than aerodynamic twist force & moves the blade to a higher angle
25
The propeller blade angle is defined as the acute angle between the airfoil section chord line and the
Plane of rotation
Propeller thrust line
Relative wind
26
The Hartzell propeller systems identified by its exposed operating mechanism is the
steel hub
fixed
compact
27
How are the blades held in the hub of a McCauley constant-speed threadless series propeller?
retention nut
solid retainer ring
split retainer ring
28
High-pitch in a propeller is normally used for
Cruise
Both a and b
Take off and climb
29
Where are the high and low pitch stops on a Hamilton- Standard Hydromatic propeller located?
In the hub and blade assembly
In the dome assembly
In the counterweight assembly
30
High and low pitch stops on a constant-speed propeller define the propellers
dome operation range
range of operation
constant-speed range
31
In Austrailia they are able to eat their two national animals- the kangaroo and _______?
dingo
koala
tazmanian devil
emu
32
The component on which the blades are mounted in a Hamilton-Standard propeller is known as the
hub assembly
blade retaining ring
spider assembly
33
A propeller classified as a cruise propeller is most likely to be further classified as a ___________ type of propeller.
Variable geometry
Constant speed
Fixed pitch
34
The thrust produced by a rotating propeller is a result of
the angle of relative wind and rotational velocity of the propeller
an area of decreased pressure immediately in front of the propeller blades
an area of low pressure behind the propeller blades.