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