subsonic speed

简明释义

亚声速

英英释义

例句

1.Engineers tested the model to ensure it could fly at subsonic speed without issues.

工程师测试了该模型，以确保它可以在没有问题的情况下以亚音速飞行。

2.Most commercial jets operate at subsonic speed during their flights.

大多数商业喷气机在飞行过程中以亚音速运行。

3.The airplane flew at a subsonic speed, which is less than the speed of sound.

这架飞机以亚音速飞行，速度低于音速。

4.At subsonic speed, the aircraft maintains stability and control.

在亚音速下，飞机保持稳定和控制。

5.The design of the new drone allows it to travel at subsonic speed for longer durations.

新型无人机的设计使其能够以亚音速长时间飞行。

作文

In the realm of aerodynamics, understanding the concept of subsonic speed is crucial for both aviation enthusiasts and professionals alike. Subsonic speed refers to speeds that are below the speed of sound in a given medium, which is approximately 343 meters per second (or about 1,125 feet per second) at sea level in air. This speed is significant because it dictates how aircraft behave during flight and influences design considerations for various types of vehicles. When an aircraft operates at subsonic speed, it experiences different aerodynamic forces compared to those at supersonic or hypersonic speeds. The airflow around the aircraft remains smooth and continuous, allowing for efficient lift generation. This is particularly important for commercial airliners, which typically cruise at subsonic speeds. For example, most passenger jets fly at speeds ranging from 800 to 900 kilometers per hour, which allows them to travel long distances while maintaining fuel efficiency.Moreover, subsonic speed plays a vital role in the design of aircraft wings and fuselages. Engineers must consider the effects of drag and lift at these speeds to optimize performance. The shape of the wings, known as airfoils, is carefully crafted to ensure that the aircraft can generate sufficient lift without incurring excessive drag. In addition to commercial aviation, subsonic speed is also relevant in military applications. Many military aircraft are designed to operate efficiently at subsonic speeds for reconnaissance missions and tactical operations. These missions require stealth and maneuverability, which are better achieved at lower speeds where the aircraft can avoid detection by radar systems.However, it is essential to note that when aircraft approach the speed of sound, they enter a transitional phase known as transonic speed, where the behavior of airflow changes dramatically. This can lead to shock waves forming on the aircraft, increasing drag and potentially causing instability. Therefore, understanding subsonic speed helps engineers develop technologies that allow aircraft to transition smoothly into supersonic flight when necessary.The implications of subsonic speed extend beyond aviation. In fields such as automotive engineering and marine transportation, the principles of subsonic speed are applied to enhance vehicle performance. For instance, cars designed for high-speed travel must minimize drag and maximize stability at subsonic speeds to achieve optimal fuel efficiency and safety.In conclusion, subsonic speed is not just a technical term but a fundamental aspect of various modes of transportation. Its significance is evident in the design and operation of aircraft, vehicles, and even watercraft. By understanding the principles associated with subsonic speed, engineers and designers can innovate and improve technologies that benefit society as a whole. As we continue to explore the boundaries of speed in transportation, the knowledge of subsonic speed will remain a cornerstone of safe and efficient travel.

亚声速在空气动力学领域中是一个至关重要的概念，对于航空爱好者和专业人士而言，理解这个概念至关重要。亚声速指的是低于给定介质中音速的速度，在海平面上，空气中的音速大约为每秒343米（或每秒约1125英尺）。这个速度非常重要，因为它决定了飞机在飞行中的表现，并影响各种类型车辆的设计考虑。当飞机以亚声速飞行时，与超声速或高超声速相比，它会经历不同的空气动力学力。飞机周围的气流保持平滑和连续，使得有效升力的产生成为可能。这对于商业客机尤其重要，因为它们通常以亚声速巡航。例如，大多数客机的飞行速度在每小时800到900公里之间，这使得它们能够在保持燃油效率的同时，长途旅行。此外，亚声速在军用应用中也起着至关重要的作用。许多军用飞机被设计为在亚声速下高效运行，以进行侦察任务和战术行动。这些任务需要隐蔽性和机动性，而在较低速度下飞机可以避免被雷达系统探测。然而，值得注意的是，当飞机接近音速时，它们进入一个称为跨声速的过渡阶段，此时气流的行为会发生剧烈变化。这可能导致飞机上形成冲击波，从而增加阻力并可能导致不稳定。因此，理解亚声速有助于工程师开发技术，使飞机在必要时能够顺利过渡到超声速飞行。亚声速的影响不仅仅局限于航空。在汽车工程和海洋运输等领域，亚声速的原理被应用于提升车辆性能。例如，设计用于高速旅行的汽车必须在亚声速下尽量减少阻力并最大化稳定性，以实现最佳燃油效率和安全性。总之，亚声速不仅仅是一个技术术语，而是各种交通方式的基本方面。它的重要性在于飞机、车辆甚至水上交通工具的设计和操作中显而易见。通过理解与亚声速相关的原理，工程师和设计师可以创新并改善有益于整个社会的技术。随着我们继续探索交通速度的边界，亚声速的知识将始终是安全和高效旅行的基石。