All Flashcards
(639 cards)
Describe the purpose of the turbine section of a turbojet engine Compress the air Heat the air Turn the compressor Maintain a proper burn of the fuel
Turn the compressor
Which engine component would be most damaged by excessive egt? Burner section Compressor blades Turbine blades Exhaust nozzle
Turbine blades
While encountering volcanic ash at 350 you should
Reduce thrust to idle and initiate a 180 turn
Reduce thrust and initiate a descent
Maintain thrust and initiate a descent
Increase thrust and climb
Reduce thrust to idle and initiate a 180 turn
Under normal operating conditions what point in a jet engine has the highest static pressure
Combustion chamber inlet
Turbine inlet section
Turbine discharge section
Exhaust nozzle
Combustion chamber inlet
Under normal operating conditions, what point in a jet engine has the highest temperature? Combustion chamber inlet Turbine section inlet Turbine discharge section Exhaust nozzle
Turbine section inlet
What are some characteristics of an airplane loaded with the case at the aft limit?
High stall speed / highest cruise speed / highest stability
High stall speed / highest cruise speed / least stability
Lowest stall speed / lowest cruise speed / highest stability
Lowest stall speed / highest cruise speed / least stability
Lowest stall speed / highest cruise speed / least stability
An aircraft that returns to its originally trimmed condition after being displaced would be: Dynamically unstable Dynamically stable Statically unstable Statically stable
Dynamically stable
What is a characteristic of longitudinal instability?
Bank oscillations become progressively greater
Aircraft constantly tries to pitch down
Aircraft constantly tries to pitch up
Pitch oscillations become progressively greater
Pitch oscillations become progressively greater
Which statement is true regarding CG position?
A CG near the aft limit is less stable and more fuel efficient
A CG near the forward limit is more stable and more fuel efficient
A CG near the aft limit is more stable and less controllable
A CG near the forward limit is more stable and more controllable
A CG near the aft limit is less stable and more fuel efficient
An airplane pitches up due to turbulence. The nose attempts to return to the trim condition but begins oscillations about the trim attitude that are increasing in amplitude. Which of the following correctly describes the status of the aircraft?
The aircraft has negative static stability and negative dynamic stability
The aircraft has positive static and dynamic stability
The aircraft has positive static stability and negative dynamic stability
The aircraft has negative static and dynamic stability
The aircraft has positive static stability and negative dynamic stability
What effect if any does high ambient temperature have upon the thrust output of a turbine engine?
The thrust will be reduced due to the increase in air density
The thrust will be reduced due to the decrease in air density
Thrust will remain the same but turbine temperature will be higher
Thrust will be higher because more heat energy is extracted from hot air
The thrust will be reduced due to the decrease in air density
The ability of an airplane to efficiently convert fuel energy into flying distance is one of the most important items. The formula used to calculate a specified distance with fuel expenditure is: Specific range Specific endurance Specific fuel consumption Specific drag
Specific range
What factors increase thrust from a turbofan engine? Increased temperature Increased airspeed Decreased atmospheric pressure Decreased humidity
Increased airspeed
During the summer in the USA you takeoff from Denver to a lower elevation. What type of performance do you expect from your turbo fan engines upon arrival?
Better, as temp decreases, pressure increases, thrust increases
Better, as temp increases, pressure descreases, thrust increases
Little discernible difference
Worse as temperature increases
Better, as temp decreases, pressure increases, thrust increases
In a Boeing 737 you have lost the number one engine on takeoff, you elect to return to your departure airport which has runway 9-27. Winds are 180/12. Which runway do u choose
27, due to crosswind aiding in directional control
9, due to crosswind aiding in directional control
27, due to increased rudder effectiveness
9, due to less effective crosswind component
9, due to crosswind aiding in directional control
In a Boeing 737 you have lost the number two engine on takeoff, you elect to return to runway 9-27 with winds 180/12. What runway do you land?
27, due to crosswind aiding in directional control
9, due to crosswind aiding in directional control
27, due to increased rudder effectiveness
9, due to less effective crosswind component
27, due to crosswind aiding in directional control
You are taking off in a b747 on runway 27 with winds 230/19, what would you consider the critical engine to be?
Number one
Either starboard engine
Number four
Jet aircraft do not designate critical engine
Number one
As the CG location of an aircraft moves aft:
Maneuverability increases, control forces decrease, stability decrease
Maneuverability increases, control forces decrease, stability increases
Maneuverability decreases, control forces increase, stability decreases
Maneuverability decreases, control forces decrease, stability increases
Maneuverability increases, control forces decrease, stability decrease
Movement around the lateral axis of an aircraft is referred to as Pitch Yaw Roll Slideslip
Pitch
Dihedral is a design element to enhance which characteristic
Lateral stability about the longitudinal axis
Longitudinal stability about the lateral axis
Longitudinal stability around the vertical axis
Lateral stability about the vertical axis
Lateral stability about the longitudinal axis
Why do some airplanes equipped with inboard/outboard ailerons use the outboards for slow flight only?
Increased surface area provides greater controllability w/ flap ext
Aerodynamic loads on the outboard ailerons tend to twist wingtips
Locking out the outboards in high speed provides variable feel
Locking out the outboards in high speed counteracts Dutch roll
Aerodynamic loads on the outboard ailerons tend to twist wingtips
What is the primary purpose of high lift devices
- Increase drag and reduce airspeed
- Increase L/D max
- Increase lift at low airspeed
- Reduce drag and increase airspeed
- Increase lift at low airspeed
Which statement is true regarding ailerons and spoilers
- Ailerons and spoilers both produce adverse yaw
- Ailerons produce adverse yaw and spoilers produce proverse yaw
- Ailerons produce proverse yaw and spoilers produce adverse yaw
- Ailerons produce adverse yaw and spoilers have no effect on yaw
- Ailerons produce adverse yaw and spoilers produce proverse yaw
Non typical modes of turbine ignition system operation are used for certain flight conditions such as:
Continuous ignition that is used at a lower voltage and energy level
Continuous ignition that is used at a higher voltage and energy level
Generators that are used at a lower voltage and energy level
Generators that are used at a higher voltage and energy level
Continuous ignition that is used at a lower voltage and energy level