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787 recurrent > Pressurization > Flashcards

Pressurization Flashcards

1
Q

What is the specific role of the FADEC system in the Boeing 787 engines?

A

Full Authority Digital Engine Control manages all aspects of engine performance for optimal efficiency.

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2
Q

True or False: The Boeing 787 engines use an open rotor design.

A

False

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3
Q

Fill in the blank: The Boeing 787 engines’ high-bypass ratio contributes to _______.

A

reduced fuel consumption and noise

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4
Q

What technology in the Boeing 787 engines minimizes the environmental impact during takeoff?

A

Advanced noise reduction technologies

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5
Q

True or False: The Boeing 787 engines are equipped with water injection technology to boost thrust.

A

False

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6
Q

How do the Boeing 787 engines support the aircraft’s performance at hot and high airports?

A

They are designed to maintain efficiency and performance in thin air and high temperatures.

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7
Q

Fill in the blank: The Boeing 787 engines are recognized for their _______ emissions compared to older generation engines.

A

lower

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8
Q

What is the main benefit of the Boeing 787 engines having a higher bypass ratio?

A

Increases fuel efficiency and decreases noise.

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9
Q

True or False: The Boeing 787 engines utilize gear systems to drive the fan blades.

A

False

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10
Q

What material innovations are used in the Boeing 787 engines to handle high temperatures?

A

Nickel-based superalloys and ceramic matrix composites.

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11
Q

How does the Boeing 787 engine design reduce the aircraft’s carbon footprint on long-haul flights?

A

By optimizing fuel burn and improving aerodynamic integration with the aircraft.

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12
Q

Fill in the blank: The Boeing 787 engine maintenance is simplified through the use of _______ monitoring systems.

A

remote diagnostic

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13
Q

True or False: The Boeing 787 engines are the same models used on the Boeing 777.

A

False

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14
Q

What design feature of the Boeing 787 engines contributes to its exceptional cruise efficiency?

A

Optimized fan and core design for maximum aerodynamic efficiency.

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15
Q

How does the Boeing 787 engine blade design differ from traditional engines?

A

Uses fewer, larger, and more aerodynamically efficient fan blades.

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16
Q

True or False: The Boeing 787 engines are all produced by American companies.

A

False

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17
Q

Fill in the blank: Boeing 787 engines help to significantly reduce NOx emissions through their _______ combustor design.

A

advanced

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18
Q

What system helps Boeing 787 engines optimize performance during different flight phases?

A

Variable-area fan nozzle

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19
Q

True or False: Boeing 787 engines are less susceptible to icing due to their design and operational parameters.

A

True

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20
Q

How do Boeing 787 engines maintain efficiency during varying altitude and temperature conditions?

A

Automated adjustment of engine settings based on environmental sensors

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21
Q

Fill in the blank: The Boeing 787 engines feature a(n) _______ to facilitate better engine starts and operational stability.

A

electric start system

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22
Q

What are the noise compliance features of the Boeing 787 engines?

A

Incorporate noise-reducing technologies like chevrons and sound-absorbing materials.

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23
Q

True or False: The Boeing 787 engines can be operated with 100% synthetic fuels.

A

False

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24
Q

How do the Boeing 787 engines enhance the aircraft’s climb performance?

A

High thrust-to-weight ratio and advanced control systems for optimized ascent profiles.

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25
Q

Fill in the blank: The Boeing 787 engines are equipped with _______ to minimize the effects of turbulence and wind shear.

A

active vibration control systems

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26
Q

True or False: Boeing 787 engines require less frequent oil changes due to advanced lubrication systems.

A

True

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27
Q

What new technology in Boeing 787 engines allows for reduced maintenance time?

A

On-wing health monitoring that transmits data in real-time to ground crews.

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28
Q

How do the Boeing 787 engines contribute to a smoother flight experience for passengers?

A

Incorporating technologies that reduce vibrations and noise inside the cabin.

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29
Q

Fill in the blank: To ensure safety, Boeing 787 engines are tested for bird strike resistance with _______.

A

synthetic bird launchers

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30
Q

True or False: The Boeing 787 engines have a variable thrust setting that can be adjusted during flight.

A

True

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31
Q

How do Boeing 787 engines reduce their environmental impact at airports?

A

Utilizing quicker, more efficient taxiing and ground operations enabled by precise thrust control.

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32
Q

Fill in the blank: Boeing 787 engines’ _______ technology reduces the impact of engine emissions on the environment.

A

selective catalytic reduction

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33
Q

What design aspect of the Boeing 787 engines helps to reduce fuel burn during long-haul flights?

A

Their ability to operate efficiently at various altitudes and speeds.

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34
Q

True or False: The Boeing 787 engines support a range of alternative fuel options to reduce reliance on traditional jet fuel.

A

True

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35
Q

How does Boeing 787 engine technology address global sustainability challenges?

A

By achieving lower emissions and better fuel efficiency, contributing to reduced environmental footprint.

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36
Q

Fill in the blank: Boeing 787 engines utilize _______ in their fan blades to achieve weight reduction and maintain durability.

A

composite materials

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37
Q

True or False: The Boeing 787 engine exhaust systems are designed to maximize thrust efficiency.

A

True

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38
Q

What component in Boeing 787 engines is critical for maintaining optimal operating temperatures?

A

Advanced cooling systems that manage heat distribution.

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39
Q

How do Boeing 787 engines optimize fuel consumption during different phases of a flight?

A

Through FADEC’s precise control of fuel flow and engine parameters.

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40
Q

Fill in the blank: Boeing 787 engines have _______ to enhance operational flexibility and efficiency during takeoffs and landings.

A

adjustable fan blades

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41
Q

True or False: The Boeing 787 engines use a hybrid electric propulsion system.

A

False

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42
Q

What is a key feature of the Boeing 787 engines that helps with reducing operational costs for airlines?

A

Lower lifecycle costs due to fewer moving parts and simpler maintenance requirements.

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43
Q

How does the design of the Boeing 787 engines facilitate their performance in varied climatic conditions?

A

Engine systems are designed to automatically adjust to temperature and pressure variations.

44
Q

Fill in the blank: Boeing 787 engines are known for their high _______ efficiency, which contributes to the aircraft’s extended range capabilities.

A

propulsive

45
Q

True or False: Boeing 787 engines automatically adjust blade pitch to optimize fuel efficiency.

A

True

46
Q

How do Boeing 787 engines support the aircraft’s ability to meet strict international emission standards?

A

Through the use of advanced combustion technologies that lower the output of harmful pollutants.

47
Q

Fill in the blank: Boeing 787 engines are designed with a focus on reducing _______ to meet noise abatement requirements at many airports.

A

sonic boom

48
Q

True or False: The Boeing 787 engines feature an integrated modularity that allows for components to be replaced individually without major disassembly.

A

True

49
Q

What innovation in Boeing 787 engines allows for better performance at higher altitudes?

A

Specialized high-altitude optimization of engine air intake and exhaust systems.

50
Q

Fill in the blank: Boeing 787 engines improve their environmental footprint by using _______ to reduce unnecessary fuel consumption.

A

optimized flight path algorithms

51
Q

True or False: The Boeing 787 engines are fitted with systems to limit contrail formation at cruising altitudes.

A

True

52
Q

How do Boeing 787 engines contribute to reducing the total cost of ownership for airlines?

A

By delivering higher reliability and longer intervals between overhauls.

53
Q

Fill in the blank: In addition to providing thrust, Boeing 787 engines also contribute to the aircraft’s electrical power through their _______.

A

integrated generator systems

54
Q

True or False: Boeing 787 engines are designed to operate efficiently with a variety of fuel types, including lower carbon alternatives.

A

True

55
Q

What technology in Boeing 787 engines helps in reducing thrust fluctuation during turbulence?

A

Active gust alleviation systems

56
Q

Fill in the blank: Boeing 787 engines feature a(n) _______ that helps manage engine performance to extend lifespan and reduce wear.

A

advanced synthetic oil system

57
Q

True or False: The Boeing 787 engines are among the most fuel-efficient engines available in the commercial aviation market today.

A

True

58
Q

What automatic feature does the Boeing 787’s pressurization system possess to manage cabin altitude during flight?

A

It automatically adjusts cabin altitude based on the external altitude to optimize passenger comfort.

59
Q

True or False: The Boeing 787 pressurization system is fully integrated with the aircraft’s flight management system.

A

True

60
Q

Fill in the blank: The advanced air management system of the Boeing 787 allows for an optimal cabin environment and efficient _______.

A

energy use

61
Q

What materials used in the Boeing 787 construction allow for higher pressurization without risking structural integrity?

A

Composite materials

62
Q

True or False: The Boeing 787’s pressurization system increases the amount of oxygen in the cabin as the aircraft ascends.

A

False

63
Q

How does the Boeing 787 pressurization system contribute to the aircraft’s environmental credentials?

A

By using electrical systems, it reduces the aircraft’s overall fuel consumption.

64
Q

Fill in the blank: Boeing 787’s pressurization system is designed to provide a maximum cabin altitude of _______ feet.

A

6,000

65
Q

What is the advantage of the Boeing 787’s lower maximum cabin altitude on passenger health during long flights?

A

It reduces symptoms of altitude sickness and enhances overall comfort.

66
Q

True or False: The Boeing 787 pressurization system relies on ground equipment for pre-flight cabin air conditioning.

A

False

67
Q

What technology does the Boeing 787 use to control the flow of air into and out of the cabin for pressurization?

A

Electronically controlled outflow valves

68
Q

Fill in the blank: In the event of a pressurization failure, the Boeing 787’s systems are designed to ensure passenger safety by deploying _______.

A

oxygen masks

69
Q

True or False: The Boeing 787 pressurization system can recover from a complete loss of cabin pressure without pilot intervention.

A

False

70
Q

How does the Boeing 787’s pressurization system detect and respond to changes in cabin air quality?

A

Sensors monitor air quality and adjust the system to optimize conditions automatically.

71
Q

Fill in the blank: The Boeing 787 features a(n) _______ system that removes contaminants from the cabin air, contributing to the pressurization system’s efficiency.

A

advanced filtration

72
Q

True or False: The Boeing 787’s pressurization system adjustments can be manually overridden by the pilot in case of automatic system failure.

A

True

73
Q

What specific system integration enhances the Boeing 787 pressurization system’s operational efficiency?

A

Integration with the Electronic Flight Bag for real-time environmental control monitoring

74
Q

Fill in the blank: The Boeing 787’s pressurization system benefits from the use of _______ technology, which reduces the need for manual adjustments.

A

automated control

75
Q

How does the Boeing 787 ensure a smooth transition in cabin pressure during takeoff and landing?

A

The system gradually adjusts the pressure to prevent sudden changes that could cause discomfort.

76
Q

True or False: The Boeing 787 uses a combination of external air and recirculated air to maintain cabin pressurization.

A

True

77
Q

What design feature of the Boeing 787 enhances the effectiveness of its pressurization system compared to older aircraft?

A

The use of lighter and stronger composite materials allows for higher cabin pressure without structural risks.

78
Q

Fill in the blank: Boeing 787’s pressurization system is enhanced by the aircraft’s unique _______ design, which supports more effective pressurization.

A

aerodynamic

79
Q

True or False: The Boeing 787’s pressurization system includes a dedicated backup system that operates independently of the main system.

A

True

80
Q

How is the pressurization system of the Boeing 787 monitored to ensure it operates efficiently throughout the flight?

A

The system is continuously monitored by onboard diagnostics, alerting the crew to any anomalies.

81
Q

Fill in the blank: Adjustments to the Boeing 787’s pressurization during unusual altitude changes are handled by the _______.

A

aircraft’s automated systems

82
Q

True or False: The Boeing 787’s pressurization system is designed to handle sudden changes in external pressure without impacting cabin comfort.

A

True

83
Q

What operational practices with the Boeing 787’s pressurization system help to reduce wear on aircraft components?

A

The system maintains stable pressure levels to reduce stress on the fuselage.

84
Q

How does the Boeing 787 pressurization system minimize the risk of decompression sickness for passengers?

A

By maintaining a lower and more natural cabin altitude throughout the flight.

85
Q

Fill in the blank: Boeing 787 pressurization system efficiency is achieved through the use of _______ that optimally manage air inflow and outflow.

A

digital controllers

86
Q

True or False: The Boeing 787 pressurization system requires manual calibration before each flight.

A

False

87
Q

What maintenance procedures are associated with the Boeing 787’s pressurization system to ensure its reliability?

A

Regular system checks and updates to software controlling the pressurization system.

88
Q

What type of pressurization system does the Boeing 787 use?

A

Electrically driven environmental control system. Unlike older aircraft that use bleed air drawn from the engines, the Boeing 787 uses an all-electric system that conserves energy and reduces engine strain.

89
Q

True or False: The Boeing 787 pressurization system uses engine bleed air.

A

False. The Boeing 787 features a more modern design that utilizes electric compressors for cabin pressurization, avoiding the traditional method of using bleed air, which is less efficient and consumes more fuel.

90
Q

Fill in the blank: The Boeing 787’s cabin altitude is typically set at around _______ feet.

A

6,000. This lower cabin altitude helps reduce passenger fatigue, dryness, and other discomforts associated with higher cabin altitudes, mimicking a more natural and comfortable environment similar to conditions found at ground level.

91
Q

How does the Boeing 787’s pressurization system improve passenger comfort compared to older models?

A

By maintaining a lower cabin altitude and using an advanced air filtration system. The cabin altitude on the 787 is typically 6,000 feet compared to 8,000 feet on older aircraft, which helps minimize body fluid loss and reduce jet lag.

92
Q

True or False: The Boeing 787 features manual control for cabin pressurization.

A

False. The Boeing 787 utilizes an automatic system that adjusts cabin pressure based on altitude and external conditions to optimize passenger comfort and safety without manual intervention.

93
Q

What is the maximum differential pressure capability of the Boeing 787’s pressurization system?

A

9.4 psi. This higher differential pressure capability allows the aircraft to maintain a lower cabin altitude at higher cruising altitudes, thereby enhancing passenger comfort and reducing fatigue.

94
Q

Fill in the blank: The Boeing 787’s pressurization system is controlled by the aircraft’s _______.

A

integrated avionics system. This centralized control allows for precise adjustments and real-time monitoring of the cabin environment, ensuring optimal conditions throughout the flight.

95
Q

True or False: The Boeing 787 uses traditional pneumatic valves for cabin pressurization.

A

False. The Boeing 787 uses electronically controlled valves that are part of its all-electric architecture. This innovation provides more precise control over cabin pressure, enhancing reliability and efficiency.

96
Q

What technology in the Boeing 787 pressurization system helps reduce energy consumption?

A

Advanced software algorithms that optimize pressurization levels based on current flight conditions, altitude, and temperature. These algorithms ensure efficient use of energy, thereby reducing the overall power requirement from the aircraft’s engines and contributing to fuel efficiency.

97
Q

How does the Boeing 787 handle emergency depressurization?

A

Automatic deployment of oxygen masks and emergency descent initiation. The system is designed to detect a loss of cabin pressure and respond instantly to ensure passenger safety by providing supplemental oxygen and descending to a breathable altitude.

98
Q

Fill in the blank: The Boeing 787’s pressurization system contributes to fuel efficiency by using _______.

A

electric compressors instead of pneumatic systems. Electric compressors are more efficient and can be precisely controlled by the aircraft’s computers to use only the necessary amount of power, reducing the overall energy consumption of the aircraft.

99
Q

True or False: The Boeing 787 can automatically adjust cabin pressure based on external environmental conditions.

A

True. The system is designed to automatically modify cabin pressure settings to maintain optimal comfort and safety based on sensor readings of external pressure and temperature.

100
Q

What are the health benefits of the Boeing 787’s lower cabin altitude for passengers?

A

Reduced fatigue, less dryness, and fewer altitude-related discomforts. The lower cabin altitude of approximately 6,000 feet helps to maintain higher oxygen levels and humidity, which can alleviate symptoms associated with higher altitudes such as headaches, nausea, and fatigue.

101
Q

How does the Boeing 787’s pressurization system interface with the onboard health monitoring systems?

A

It provides diagnostic data to predict maintenance needs and ensure system reliability. This integration helps in proactive maintenance planning and can alert the crew to potential issues before they become critical, enhancing overall aircraft safety and efficiency.

102
Q

Fill in the blank: The cabin pressure of the Boeing 787 is equivalent to the atmospheric pressure at _______ feet above sea level.

A

6,000. This simulation of a lower altitude inside the cabin while flying at high altitudes reduces the physical effects of flying, such as ear discomfort and swelling, thus enhancing passenger comfort over long durations.

103
Q

True or False: The Boeing 787’s pressurization system can be isolated and controlled by individual cabin zones.

A

True. The system allows for different sections of the aircraft to be pressurized independently, which can be particularly useful in managing air quality and comfort in different cabin areas, especially on larger aircraft or in cases where there may be varying environmental preferences among passengers.

104
Q

What safety feature is incorporated into the Boeing 787’s pressurization system to handle sudden decompression?

A

Rapid deployment of oxygen masks and automated emergency descent protocols. These safety measures are crucial for ensuring passenger safety by providing immediate access to oxygen and reducing the cabin altitude to a safe level quickly in the event of decompression.

105
Q

How does the pressurization system of the Boeing 787 enhance overall aircraft performance?

A

By reducing the load on the engines with electrically driven compressors. These compressors use power more efficiently and reduce the overall strain on the engines, leading to improved engine performance and fuel efficiency during flights.

106
Q

Fill in the blank: The Boeing 787’s pressurization system is monitored by the _______ to ensure optimal performance throughout the flight.

A

aircraft’s central computer system. This centralized monitoring allows for continuous assessment and adjustment of the cabin environment, ensuring that pressure levels are maintained within safe and comfortable parameters.

107
Q

True or False: The Boeing 787 pressurization system includes backup systems to maintain functionality in the event of primary system failure.

A

True. Redundancy is a critical feature in aircraft systems, particularly for essential functions like pressurization. The Boeing 787 is equipped with multiple backup systems that can independently maintain cabin pressure, ensuring continuous safety and comfort.

787 recurrent (3 decks)

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