dynamic lift

简明释义

动升力

英英释义

例句

1.The aircraft achieved a remarkable level of dynamic lift 动态升力 during its test flight, allowing it to climb rapidly.

这架飞机在测试飞行中达到了显著的动态升力动态升力，使其能够快速爬升。

2.The concept of dynamic lift 动态升力 is crucial for understanding how birds manage to soar effortlessly.

理解鸟类如何轻松翱翔的关键在于动态升力动态升力的概念。

3.During the wind tunnel tests, the dynamic lift 动态升力 was measured to optimize the aircraft's performance.

在风洞测试中，测量了动态升力动态升力以优化飞机的性能。

4.Engineers are studying the dynamic lift 动态升力 generated by different wing designs to improve fuel efficiency.

工程师们正在研究不同机翼设计产生的动态升力动态升力以提高燃油效率。

5.In racing, cars utilize dynamic lift 动态升力 to enhance grip on the track at high speeds.

在赛车中，汽车利用动态升力动态升力在高速行驶时增强与赛道的抓地力。

作文

In the world of physics and engineering, the concept of lift is crucial, especially when it comes to the design and operation of aircraft. One of the most fascinating aspects of this phenomenon is what we refer to as dynamic lift. This term encompasses the forces that allow an object to rise against the pull of gravity due to its motion through a fluid, typically air. Understanding dynamic lift is essential for anyone interested in aviation or aerodynamics.To comprehend dynamic lift, we must first explore the principles of lift itself. Lift is generated by the difference in air pressure on the upper and lower surfaces of an airfoil, such as a wing. When an aircraft moves forward, air flows over and under the wings. The shape of the wing, often designed with a curved upper surface and a flatter lower surface, causes the air pressure above the wing to decrease while the pressure below increases. This pressure difference results in an upward force known as lift.However, dynamic lift specifically refers to the lift that occurs as a result of the aircraft's speed and angle of attack. As the speed of the aircraft increases, the airflow over the wings becomes more pronounced, enhancing the lift generated. Moreover, the angle at which the wing meets the oncoming air, known as the angle of attack, plays a critical role in maximizing dynamic lift. A proper angle of attack allows the wing to generate sufficient lift without stalling, which can occur if the angle is too steep.The relationship between speed, angle of attack, and dynamic lift is vital for pilots to understand. During takeoff and landing, pilots must carefully manage these variables to ensure a safe ascent and descent. For instance, during takeoff, pilots increase the throttle to gain speed, allowing the wings to generate enough dynamic lift to overcome the weight of the aircraft. Conversely, during landing, they must decrease speed and adjust the angle of attack to maintain control and avoid stalling.In addition to aviation, the concept of dynamic lift also applies to various fields such as marine engineering and sports. For example, sailboats utilize dynamic lift generated by their sails to move through water. The sails are designed to create a pressure difference similar to that of an airplane wing, allowing the boat to harness wind energy effectively.In sports like skiing or snowboarding, athletes also experience dynamic lift when performing jumps or tricks. By using their speed and body positioning, they can manipulate the air around them to achieve lift off the ground, enabling them to perform aerial maneuvers.In conclusion, dynamic lift is a fundamental concept that extends beyond aviation into various aspects of science and everyday life. It illustrates the intricate relationship between motion, pressure, and force. Whether in the skies or on the water, understanding dynamic lift equips us with the knowledge to appreciate how objects can defy gravity and navigate through different mediums. As technology continues to advance, the principles of dynamic lift will remain integral in designing more efficient and powerful vehicles, whether they fly, sail, or glide through the air.

在物理和工程的世界中，升力的概念至关重要，特别是在飞机的设计和操作方面。这个现象中最迷人的一个方面是我们所称之为动态升力的概念。这个术语涵盖了允许物体在流体（通常是空气）中运动时抵抗重力拉力的力量。理解动态升力对于任何对航空或空气动力学感兴趣的人来说都是必不可少的。要理解动态升力，我们首先必须探索升力本身的原理。升力是由机翼上表面和下表面之间的气压差产生的。当飞机向前移动时，空气在机翼上方和下方流动。机翼的形状通常设计为上表面弯曲、下表面较平坦，这使得机翼上方的气压降低，而下方的气压增加。这种压力差产生了一种向上的力，称为升力。然而，动态升力特指由于飞机的速度和攻角而产生的升力。随着飞机速度的增加，机翼上方的气流变得更加明显，从而增强了产生的升力。此外，机翼与迎面而来的空气相遇的角度，称为攻角，在最大化动态升力方面也起着关键作用。适当的攻角使机翼能够产生足够的升力而不失速，如果角度过陡则可能会失速。速度、攻角和动态升力之间的关系对飞行员来说至关重要。在起飞和着陆过程中，飞行员必须仔细管理这些变量，以确保安全的上升和下降。例如，在起飞过程中，飞行员增加油门以获得速度，使机翼能够产生足够的动态升力来克服飞机的重量。相反，在着陆过程中，他们必须减速并调整攻角，以保持控制并避免失速。除了航空，动态升力的概念还适用于海洋工程和体育等多个领域。例如，帆船利用其帆产生的动态升力在水中移动。帆的设计旨在创造类似于飞机机翼的压力差，从而有效地利用风能。在滑雪或单板滑雪等运动中，运动员在进行跳跃或特技时也会体验到动态升力。通过利用速度和身体姿势，他们可以操控周围的空气，从而实现离地升起，使他们能够执行空中动作。总之，动态升力是一个基本概念，超越了航空，延伸到科学和日常生活的各个方面。它展示了运动、压力和力之间的复杂关系。无论是在天空中还是在水中，理解动态升力使我们能够欣赏物体如何挑战重力并在不同介质中导航。随着技术的不断进步，动态升力的原理将继续在设计更高效、更强大的飞行器中发挥重要作用，无论它们是飞行、航行还是在空气中滑行。