auxiliary power unit

简明释义

辅助动力装置辅助电源设备

英英释义

例句

1.Maintenance staff routinely inspect the auxiliary power unit for any signs of wear.

维护人员定期检查辅助动力单元是否有磨损迹象。

2.The bus uses an auxiliary power unit to run air conditioning while parked.

这辆公交车使用辅助动力单元在停靠时运行空调。

3.Ground crew checked the auxiliary power unit before the flight to ensure everything was functioning properly.

地勤人员在航班前检查了辅助动力单元以确保一切正常运作。

4.The airplane's auxiliary power unit provides power when the main engines are not running.

飞机的辅助动力单元在主发动机未运行时提供电力。

5.In case of an emergency, the auxiliary power unit can supply essential systems with electricity.

在紧急情况下，辅助动力单元可以为重要系统提供电力。

作文

In modern aviation and transportation, the role of an auxiliary power unit cannot be overstated. An auxiliary power unit (APU) is a device that provides energy for functions other than propulsion. It is primarily used to supply power to the aircraft when the main engines are not running, ensuring that essential systems remain operational during ground operations. This includes air conditioning, lighting, and avionics systems, which are crucial for passenger comfort and safety. The significance of an auxiliary power unit becomes evident when considering the operational efficiency of aircraft. By utilizing an APU, airlines can reduce their reliance on ground power sources, which not only cuts costs but also minimizes the environmental impact associated with fuel consumption. For instance, when an aircraft is parked at the gate, the APU allows the crew to maintain necessary power without needing to keep the main engines running, thus saving fuel and reducing noise pollution. Furthermore, the auxiliary power unit serves as a backup power source in case of an emergency. In situations where the main engines fail or there is a loss of electrical power, the APU can provide critical support to keep essential systems functioning until the aircraft can land safely. This redundancy is vital for ensuring the safety of passengers and crew alike.In addition to aviation, auxiliary power units are also utilized in various industries, including maritime and military applications. For example, naval vessels often employ APUs to power onboard systems while docked, allowing the main engines to remain off and reducing wear and tear. Similarly, military vehicles use APUs to provide power to communication and surveillance equipment without needing to operate the primary engine, thereby enhancing stealth capabilities.The technology behind auxiliary power units has evolved significantly over the years. Modern APUs are designed to be more efficient, lightweight, and environmentally friendly. Manufacturers are continually innovating to improve fuel efficiency and reduce emissions, aligning with global efforts to combat climate change. The integration of advanced materials and technologies has led to the development of quieter and more reliable APUs, which are essential for meeting the demands of contemporary aviation and transportation.In conclusion, the auxiliary power unit is a critical component in the operation of modern aircraft and various other vehicles. Its ability to provide power for essential systems without relying on the main engines enhances operational efficiency, reduces environmental impact, and ensures safety during emergencies. As technology continues to advance, the role of APUs will likely grow, contributing to more sustainable practices in aviation and beyond. Understanding the importance of the auxiliary power unit helps us appreciate the complexities of modern transportation and the innovations that drive it forward.

在现代航空和交通运输中，辅助动力装置的作用不容小觑。辅助动力装置（APU）是一种提供除推进以外的功能所需能量的设备。它主要用于在主发动机未运行时为飞机提供电力，确保在地面操作期间基本系统保持运行。这包括空调、照明和航空电子系统，这些对乘客的舒适和安全至关重要。考虑到飞机的操作效率，辅助动力装置的重要性变得显而易见。通过利用APU，航空公司可以减少对地面电源的依赖，这不仅降低了成本，还最小化了与燃料消耗相关的环境影响。例如，当飞机停靠在登机口时，APU使机组人员能够在不需要启动主发动机的情况下维持必要的电力，从而节省燃料并减少噪音污染。此外，辅助动力装置在紧急情况下充当备用电源。在主发动机失效或电力丧失的情况下，APU可以提供关键支持，以保持基本系统的运行，直到飞机能够安全降落。这种冗余对于确保乘客和机组人员的安全至关重要。除了航空业，辅助动力装置还广泛应用于海事和军事等各个行业。例如，海军舰艇通常在靠岸时使用APU为船上系统供电，使主发动机保持关闭，从而减少磨损。同样，军事车辆也使用APU为通信和监视设备提供电力，而无需启动主发动机，从而增强隐身能力。辅助动力装置背后的技术多年来有了显著的发展。现代APU被设计得更加高效、轻便且环保。制造商不断创新，以提高燃油效率和减少排放，符合全球应对气候变化的努力。先进材料和技术的整合导致了更安静、更可靠的APU的发展，这对于满足现代航空和交通运输的需求至关重要。总之，辅助动力装置是现代飞机和其他各种车辆运营中的关键组成部分。它在不依赖主发动机的情况下为基本系统提供电力，提高了操作效率，减少了对环境的影响，并确保在紧急情况下的安全。随着技术的不断进步，APU的作用可能会进一步增强，为航空及其他领域的可持续实践做出贡献。理解辅助动力装置的重要性有助于我们欣赏现代交通运输的复杂性及推动其前进的创新。