subsonic velocity

简明释义

亚声速

英英释义

例句

1.The aircraft was designed to operate at subsonic velocity (亚音速) for most of its flight.

这架飞机的设计是为了在大部分飞行过程中以亚音速（subsonic velocity）飞行。

2.Aerodynamic testing is crucial for ensuring stability at subsonic velocity (亚音速).

空气动力学测试对于确保在亚音速（subsonic velocity）下的稳定性至关重要。

3.The research focused on the behavior of airfoils at subsonic velocity (亚音速).

该研究集中于机翼在亚音速（subsonic velocity）下的表现。

4.At subsonic velocity (亚音速), the drag on the aircraft is significantly lower than at supersonic speeds.

在亚音速（subsonic velocity）下，飞机的阻力显著低于超音速速度。

5.Many commercial jets cruise at subsonic velocity (亚音速) for fuel efficiency.

许多商业喷气机以亚音速（subsonic velocity）巡航，以提高燃油效率。

作文

In the realm of aerodynamics and fluid dynamics, understanding the concept of subsonic velocity is crucial for both engineers and scientists. Subsonic velocity refers to speeds that are less than the speed of sound in a given medium, which, at sea level and at standard atmospheric conditions, is approximately 343 meters per second or 1235 kilometers per hour. This speed is significant because it represents a threshold that separates conventional flight from supersonic and hypersonic speeds.When an object moves at subsonic velocity, the pressure waves generated by the object can propagate ahead of it. This means that the airflow around the object remains smooth and orderly, allowing for predictable aerodynamic behavior. For instance, commercial airplanes are designed to operate efficiently at subsonic velocity during takeoff, cruising, and landing phases. The aerodynamic lift generated by the wings is optimized for these speeds, ensuring safety and fuel efficiency.One of the key characteristics of subsonic velocity is the absence of shock waves, which are a hallmark of supersonic flight. In contrast, when an object exceeds the speed of sound, it creates a sonic boom due to the compression of air molecules. This phenomenon can have significant implications for both the environment and the design of aircraft. Engineers must carefully consider how to minimize noise pollution and structural stress when designing aircraft intended to reach or exceed subsonic velocity.Moreover, the study of subsonic velocity has practical applications beyond aviation. In the field of automotive engineering, vehicles designed for high-speed travel must also be evaluated for their performance at subsonic velocity. This includes considerations for stability, control, and fuel efficiency. As electric vehicles become increasingly popular, understanding the aerodynamic properties at subsonic velocity will be essential for optimizing their designs and enhancing their performance on highways.In addition to its applications in transportation, subsonic velocity plays a role in various scientific experiments. For example, researchers studying fluid dynamics often conduct experiments in wind tunnels where they simulate subsonic velocity conditions to observe how different shapes and materials respond to airflow. These insights can lead to advancements in various fields, including architecture, sports equipment design, and even the development of new technologies for renewable energy.Furthermore, the principles governing subsonic velocity extend into the realm of environmental science. Understanding how air moves at subsonic velocity is essential for predicting weather patterns and modeling climate change. Meteorologists use data on subsonic velocity to analyze how air masses interact, which helps in forecasting storms and other severe weather events.In conclusion, subsonic velocity is a fundamental concept that permeates various fields of study and industry. Its implications stretch from the design of efficient aircraft and vehicles to advancements in scientific research and environmental understanding. By grasping the principles underlying subsonic velocity, we can better appreciate the complexities of motion and the forces that shape our world. As technology continues to evolve, the importance of mastering this concept will only grow, paving the way for innovations that enhance our lives and protect our planet.

在空气动力学和流体动力学的领域中，理解亚声速的概念对工程师和科学家来说至关重要。亚声速指的是低于给定介质中声速的速度，在海平面和标准大气条件下，大约为每秒343米或每小时1235公里。这一速度是重要的，因为它代表了常规飞行与超声速和高超声速之间的阈值。当一个物体以亚声速移动时，物体产生的压力波可以在其前方传播。这意味着物体周围的气流保持平滑和有序，从而允许可预测的空气动力学行为。例如，商业飞机在起飞、巡航和着陆阶段被设计为在亚声速下高效运行。机翼产生的升力在这些速度下得到了优化，确保了安全和燃油效率。亚声速的一个关键特征是缺乏冲击波，这是一种超声速飞行的标志。相反，当一个物体超过声速时，由于空气分子的压缩，会产生音爆。这种现象可能对环境和飞机设计产生重大影响。工程师必须仔细考虑如何在设计意图达到或超过亚声速的飞机时，尽量减少噪音污染和结构压力。此外，亚声速的研究在航空之外也有实际应用。在汽车工程领域，设计用于高速旅行的车辆也必须评估其在亚声速下的性能。这包括对稳定性、控制和燃油效率的考虑。随着电动车辆日益普及，理解亚声速下的空气动力学特性将对优化其设计和提高其在高速公路上的性能至关重要。除了在交通运输中的应用外，亚声速在各种科学实验中也发挥着作用。例如，研究流体动力学的研究人员经常在风洞中进行实验，以模拟亚声速条件，以观察不同形状和材料如何对气流作出反应。这些见解可以导致各个领域的进步，包括建筑、运动器材设计，甚至是可再生能源新技术的发展。此外，支配亚声速的原理延伸到环境科学的领域。理解空气在亚声速下的运动对于预测天气模式和建模气候变化至关重要。气象学家使用关于亚声速的数据来分析气团如何相互作用，这有助于预测风暴和其他严重天气事件。总之，亚声速是一个基本概念，渗透到各种研究和行业中。它的影响从高效飞机和车辆的设计到科学研究和环境理解的进步。通过掌握支配亚声速的原理，我们可以更好地欣赏运动的复杂性以及塑造我们世界的力量。随着技术的不断发展，掌握这一概念的重要性只会增加，为增强我们的生活和保护我们的星球铺平道路。