aerodynamic lift

简明释义

空气动力升力

英英释义

例句

1.A glider relies on aerodynamic lift to stay airborne without an engine.

滑翔机依靠空气动力学升力在没有发动机的情况下保持飞行。

2.Engineers use simulations to test how changes in shape affect aerodynamic lift.

工程师使用模拟来测试形状变化如何影响空气动力学升力。

3.Understanding aerodynamic lift is essential for pilots during takeoff and landing.

了解空气动力学升力对飞行员在起飞和着陆时至关重要。

4.The design of the airplane wings is crucial for maximizing aerodynamic lift.

飞机机翼的设计对最大化空气动力学升力至关重要。

5.The angle of attack can significantly influence aerodynamic lift.

攻角会显著影响空气动力学升力。

作文

The concept of aerodynamic lift is fundamental to the field of aerodynamics and plays a crucial role in the design and functionality of aircraft. At its core, aerodynamic lift refers to the force that directly opposes the weight of an aircraft and holds it in the air. This force is generated by the movement of air over and under the wings of the aircraft, allowing it to ascend, descend, and maintain level flight.To understand how aerodynamic lift works, we must first examine the shape of an aircraft's wing, known as an airfoil. An airfoil is designed with a specific contour that allows air to travel faster over the top surface than the bottom surface. According to Bernoulli's principle, as the speed of the air increases, the pressure decreases. Therefore, the faster-moving air over the top of the wing creates a lower pressure area compared to the higher pressure area beneath the wing. This difference in pressure generates the upward force known as aerodynamic lift.In addition to wing shape, the angle of attack also significantly influences aerodynamic lift. The angle of attack is the angle between the wing and the oncoming air. By increasing this angle, pilots can enhance the amount of lift produced, up to a certain point. However, if the angle becomes too steep, the wing may stall, causing a sudden loss of lift. Understanding the optimal angle of attack is essential for pilots to maintain safe and efficient flight.Moreover, the speed of the aircraft also affects aerodynamic lift. As the speed increases, more air flows over the wings, resulting in greater lift. This is why during takeoff and landing, pilots must ensure that the aircraft reaches a sufficient speed to generate enough lift to become airborne or safely touch down. In commercial aviation, this is often calculated using performance charts that consider factors such as weight, altitude, and wind conditions.The importance of aerodynamic lift extends beyond just aircraft; it is also vital in other fields such as automotive design and sports. For instance, race cars are designed with aerodynamic features to minimize drag and maximize lift, allowing them to maintain better traction on the track. Similarly, athletes like cyclists and swimmers utilize aerodynamic principles to enhance their performance by reducing resistance.In conclusion, aerodynamic lift is a critical force that enables aircraft to fly and is influenced by various factors including wing shape, angle of attack, and speed. A thorough understanding of these principles not only contributes to advancements in aviation technology but also finds applications in diverse fields. As we continue to explore and innovate within the realm of aerodynamics, the significance of aerodynamic lift will undoubtedly remain at the forefront of engineering and design, paving the way for safer and more efficient modes of transportation.

“空气动力升力”这一概念是空气动力学领域的基础，并在飞机的设计和功能中起着至关重要的作用。根本上说，“空气动力升力”是指直接抵抗飞机重量并将其悬浮在空中的力量。这种力量是由空气在飞机机翼上下方流动所产生的，使飞机能够上升、下降和保持水平飞行。要理解“空气动力升力”的工作原理，我们首先必须检查飞机机翼的形状，称为翼型。翼型的设计具有特定的轮廓，使得空气在机翼顶部的流速快于底部。根据伯努利原理，当空气速度增加时，压力会降低。因此，流经机翼顶部的快速空气形成了一个低压区，而机翼下方则形成高压区。这种压力差产生了被称为“空气动力升力”的向上力量。除了翼型之外，攻角也对“空气动力升力”有显著影响。攻角是指机翼与迎面而来的空气之间的角度。通过增加这个角度，飞行员可以增强产生的升力，直到某个点。然而，如果角度过陡，机翼可能会失速，导致升力突然丧失。理解最佳攻角对于飞行员保持安全和高效的飞行至关重要。此外，飞机的速度也会影响“空气动力升力”。随着速度的增加，更多的空气流过机翼，从而产生更大的升力。这就是为什么在起飞和着陆过程中，飞行员必须确保飞机达到足够的速度，以产生足够的升力使其离开地面或安全着陆。在商业航空中，这通常通过考虑重量、高度和风速等因素的性能图表进行计算。“空气动力升力”的重要性不仅限于飞机；它在其他领域如汽车设计和运动中同样至关重要。例如，赛车的设计具有空气动力特征，以最小化阻力并最大化升力，从而使其在赛道上保持更好的牵引力。同样，像自行车运动员和游泳运动员这样的运动员利用空气动力学原理来提高他们的表现，减少阻力。总之，“空气动力升力”是使飞机飞行的关键力量，受多种因素的影响，包括翼型、攻角和速度。对这些原理的透彻理解不仅有助于航空技术的进步，还在各个领域找到应用。随着我们继续探索和创新空气动力学领域，“空气动力升力”的重要性无疑将始终处于工程和设计的前沿，为更安全和高效的交通方式铺平道路。