subsonic velocity

简明释义

亚声速

英英释义

例句

1.The airplane flew at a speed below the speed of sound, maintaining a stable flight at subsonic velocity.

这架飞机以低于音速的速度飞行，保持在亚声速的稳定飞行状态。

2.Many commercial jets cruise at subsonic velocity for fuel efficiency.

许多商业喷气机以亚声速巡航，以提高燃油效率。

3.At subsonic velocity, the airflow around the wings is predictable and manageable.

在亚声速下，机翼周围的气流是可预测和可控的。

4.During the test, the rocket was designed to operate at subsonic velocity to ensure safety.

在测试期间，这枚火箭被设计为在亚声速下运行，以确保安全。

5.Engineers studied the effects of subsonic velocity on the aircraft's performance.

工程师们研究了亚声速对飞机性能的影响。

作文

In the field of aerodynamics, understanding the concept of subsonic velocity is crucial for both aircraft design and performance analysis. Subsonic velocity refers to speeds that are less than the speed of sound in a given medium, which at sea level is approximately 343 meters per second (1235 kilometers per hour or 767 miles per hour). This range of speed is particularly significant as it encompasses the majority of commercial air travel, where planes operate efficiently and safely below this threshold.When an aircraft flies at subsonic velocity, the airflow around the wings and fuselage behaves in a predictable manner. The pressure changes that occur as air flows over the wings create lift, allowing the aircraft to ascend and maintain altitude. Engineers design wings with specific shapes—known as airfoils—that optimize lift at these speeds, ensuring that the aircraft can carry passengers and cargo effectively.Moreover, flying at subsonic velocity has various implications for fuel efficiency. Aircraft operating in this speed range tend to consume less fuel compared to those flying at higher speeds, such as transonic or supersonic speeds. This is largely due to the reduced drag experienced at subsonic velocity, which allows for longer distances to be covered on a single tank of fuel. As a result, airlines prioritize subsonic velocity operations to minimize operational costs and enhance sustainability in their fleets.However, the transition from subsonic velocity to supersonic velocity poses unique challenges. As an aircraft approaches the speed of sound, shock waves begin to form, leading to increased drag and turbulence. This phenomenon requires careful engineering to ensure that the aircraft remains stable and controllable. Many modern fighter jets and experimental aircraft are designed to handle these transitions, but for commercial aviation, maintaining subsonic velocity is often the preferred method for safe and efficient travel.In addition to commercial aviation, subsonic velocity plays a vital role in various fields such as automotive engineering, where vehicles operate at similar speeds. Understanding how air interacts with cars moving at subsonic velocity helps engineers design more aerodynamic shapes, improving fuel efficiency and performance on the road.Furthermore, the principles of subsonic velocity extend into the realm of environmental science. For instance, wind turbines must be designed to capture wind energy effectively at subsonic velocity. The blades of these turbines are optimized to harness wind flow without exceeding the speed of sound, ensuring maximum energy conversion.In conclusion, the concept of subsonic velocity is not only essential for aviation but also has far-reaching implications across various industries. By mastering the dynamics associated with subsonic velocity, engineers and scientists can innovate and improve technologies that benefit society as a whole. Whether it’s designing more efficient aircraft, creating better-performing vehicles, or harnessing renewable energy, the understanding of subsonic velocity is foundational to progress in many fields. As we continue to explore the limits of speed and efficiency, the principles governing subsonic velocity will remain a cornerstone of our technological advancements.

在空气动力学领域，理解亚音速的概念对飞机设计和性能分析至关重要。亚音速指的是低于给定介质中的声速的速度，在海平面上，大约为每秒343米（每小时1235公里或每小时767英里）。这一速度范围尤其重要，因为它涵盖了大多数商业航空旅行，飞机在该阈值以下高效且安全地运行。当飞机以亚音速飞行时，围绕机翼和机身的气流行为是可预测的。随着空气流过机翼而产生的压力变化形成升力，使飞机能够上升并保持高度。工程师设计特定形状的机翼——称为空气动力学翼型——以优化在这些速度下的升力，确保飞机能够有效地运载乘客和货物。此外，以亚音速飞行对燃油效率有多种影响。在这个速度范围内运行的飞机与在更高速度（如跨音速或超音速）下飞行的飞机相比，往往消耗更少的燃料。这主要是由于在亚音速下所经历的阻力减少，使得在单次加油的情况下可以覆盖更长的距离。因此，航空公司优先考虑亚音速操作，以降低运营成本并提高机队的可持续性。然而，从亚音速过渡到超音速速度会带来独特的挑战。当飞机接近音速时，冲击波开始形成，导致阻力和湍流增加。这一现象需要精心的工程设计，以确保飞机保持稳定和可控。许多现代战斗机和实验飞机被设计用于处理这些过渡，但对于商业航空来说，维持亚音速通常是安全和高效旅行的首选方法。除了商业航空外，亚音速在汽车工程等多个领域也发挥着重要作用，车辆在类似的速度下运行。理解空气如何与以亚音速移动的汽车相互作用，有助于工程师设计出更具空气动力学特性的形状，提高燃油效率和道路性能。此外，亚音速的原理还扩展到环境科学的领域。例如，风力涡轮机必须设计成有效捕捉在亚音速下的风能。这些涡轮机的叶片经过优化，以在不超过音速的情况下利用气流，确保最大限度地转化能量。总之，亚音速的概念不仅对航空业至关重要，而且在各个行业中具有深远的影响。通过掌握与亚音速相关的动态，工程师和科学家可以创新和改善有利于整个社会的技术。无论是设计更高效的飞机、创造更好性能的车辆，还是利用可再生能源，理解亚音速是许多领域进步的基础。随着我们继续探索速度和效率的极限，支配亚音速的原理将始终是我们技术进步的基石。