auxiliary power unit

简明释义

辅助动力装置

英英释义

例句

1.The auxiliary power unit is essential for starting the main engines in cold weather.

在寒冷天气中，辅助动力单元对于启动主发动机至关重要。

2.An efficient auxiliary power unit can reduce fuel consumption during layovers.

高效的辅助动力单元可以减少停留期间的燃料消耗。

3.The technician replaced the faulty auxiliary power unit to restore functionality.

技术人员更换了故障的辅助动力单元以恢复功能。

4.The airplane's auxiliary power unit provides electricity while on the ground.

飞机的辅助动力单元在地面时提供电力。

5.During the maintenance check, we inspected the auxiliary power unit for any signs of wear.

在维护检查中，我们检查了辅助动力单元是否有磨损迹象。

作文

In the modern world, aviation technology has advanced significantly, leading to improvements in efficiency and safety. One of the key components that play a crucial role in this advancement is the auxiliary power unit. An auxiliary power unit (APU) is a device on an aircraft that provides energy for functions other than propulsion. This small engine is typically located at the rear of the aircraft and serves several important purposes. Understanding the function and significance of an auxiliary power unit can help us appreciate its role in the aviation industry.The primary purpose of an auxiliary power unit is to supply electrical power to the aircraft when the main engines are not running. This is particularly important during ground operations when the aircraft is parked at the gate or on the tarmac. The APU powers essential systems such as lighting, air conditioning, and avionics, ensuring that the crew and passengers remain comfortable and that the aircraft is ready for departure. Without an auxiliary power unit, airlines would face significant challenges in maintaining these systems while the aircraft is on the ground.Furthermore, an auxiliary power unit also plays a vital role in starting the main engines of the aircraft. It provides the necessary pneumatic power to start the engines, which is critical for the aircraft's operation. In many cases, the APU can be started quickly and efficiently, allowing for a faster turnaround time between flights. This efficiency is essential for airlines, as it can lead to increased profitability and improved service for passengers.In addition to providing electrical power and engine starting capabilities, an auxiliary power unit can also contribute to fuel savings. By using the APU instead of the main engines for ground power, airlines can reduce fuel consumption and emissions while the aircraft is on the ground. This is increasingly important as the aviation industry seeks to become more environmentally friendly and sustainable. The use of an auxiliary power unit allows airlines to minimize their carbon footprint and comply with stricter environmental regulations.Moreover, the reliability of an auxiliary power unit is crucial for the overall safety of the aircraft. Regular maintenance and inspections ensure that the APU operates effectively when needed. Any failure of the APU can lead to complications during ground operations, potentially delaying flights and affecting passenger schedules. Therefore, understanding the importance of the APU is not only beneficial for airline operators but also for passengers who rely on timely departures.In conclusion, the auxiliary power unit is an indispensable component of modern aircraft. It provides essential power for various systems, facilitates engine starts, and contributes to fuel efficiency and environmental sustainability. As aviation technology continues to evolve, the role of the auxiliary power unit will likely become even more critical. By appreciating the significance of this device, we can better understand the complexities of aircraft operations and the continuous efforts to enhance safety and efficiency in the aviation industry.

在现代世界，航空技术已显著进步，导致效率和安全性的提高。一个在这一进步中发挥关键作用的关键组件是辅助动力单元。辅助动力单元（APU）是飞机上的一台设备，它为除了推进以外的功能提供能量。这台小型发动机通常位于飞机的尾部，承担着几个重要的任务。理解辅助动力单元的功能和重要性，可以帮助我们欣赏它在航空工业中的角色。辅助动力单元的主要目的是在主发动机未运行时为飞机提供电力。这在地面操作期间尤为重要，当飞机停在登机口或滑行道上时。APU为如照明、空调和航空电子设备等基本系统供电，确保机组人员和乘客保持舒适，并且飞机准备好起飞。如果没有辅助动力单元，航空公司在维护这些系统时将面临重大挑战。此外，辅助动力单元在启动飞机主发动机方面也发挥着至关重要的作用。它提供必要的气动动力来启动发动机，这对于飞机的操作至关重要。在许多情况下，APU可以快速高效地启动，从而允许航班之间更快的周转时间。这种效率对航空公司至关重要，因为它可以导致盈利能力的增加和乘客服务的改善。除了提供电力和发动机启动能力外，辅助动力单元还可以帮助节省燃料。通过在地面使用APU而不是主发动机供电，航空公司可以在飞机停留期间减少燃料消耗和排放。随着航空业寻求变得更加环保和可持续，这一点变得越来越重要。使用辅助动力单元使航空公司能够最小化其碳足迹，并遵守更严格的环境法规。此外，辅助动力单元的可靠性对飞机的整体安全至关重要。定期的维护和检查确保APU在需要时有效运行。APU的任何故障都可能导致地面操作中的复杂情况，可能会延误航班并影响乘客的日程。因此，理解APU的重要性不仅对航空公司运营商有益，对依赖准时出发的乘客也是如此。总之，辅助动力单元是现代飞机不可或缺的组成部分。它为各种系统提供必要的电力，促进发动机启动，并有助于燃油效率和环境可持续性。随着航空技术的不断发展，辅助动力单元的角色可能会变得更加重要。通过欣赏这一设备的重要性，我们可以更好地理解飞机操作的复杂性以及不断增强航空业安全性和效率的努力。