induced drag

简明释义

诱导抗力

英英释义

例句

1.The design of the wing plays a critical role in determining the amount of induced drag experienced by the aircraft.

机翼的设计在决定飞机所经历的诱导阻力量方面起着关键作用。

2.When an airplane climbs, the pilot must account for the increased induced drag caused by the angle of attack.

当飞机爬升时，飞行员必须考虑由于攻角增加而导致的更高的诱导阻力。

3.Reducing induced drag is essential for improving fuel efficiency during long flights.

减少诱导阻力对于提高长途飞行中的燃油效率至关重要。

4.During landing, pilots must manage induced drag to maintain control and stability.

在着陆过程中，飞行员必须管理诱导阻力以保持控制和稳定性。

5.Higher speeds can reduce induced drag, which is why many jets cruise at high altitudes.

更高的速度可以减少诱导阻力，这就是为什么许多喷气式飞机在高空巡航的原因。

作文

Understanding the principles of aerodynamics is crucial for anyone interested in aviation. One of the key concepts that every pilot and aerospace engineer must grasp is induced drag. This term refers to the drag force that arises due to the generation of lift. When an aircraft's wings create lift, they also disturb the airflow around them, leading to a phenomenon known as induced drag. Essentially, this type of drag is a byproduct of the lift-producing process.To delve deeper into the mechanics of induced drag, we first need to understand how lift is generated. As an aircraft moves through the air, its wings interact with the air molecules, causing a pressure difference between the upper and lower surfaces of the wings. This pressure difference is what creates lift. However, the creation of lift also results in the formation of vortices at the wingtips, which are areas of swirling air. These vortices are responsible for increasing the overall drag on the aircraft, hence contributing to induced drag.One important aspect of induced drag is that it is inversely related to the speed of the aircraft. At lower speeds, the angle of attack increases to maintain lift, which in turn increases the strength of the vortices and thus the induced drag. Conversely, as the aircraft gains speed, the angle of attack can be reduced, which decreases the strength of the vortices and reduces the induced drag. This relationship illustrates why pilots often experience higher drag during takeoff and landing phases when the aircraft is moving at slower speeds.Moreover, induced drag is particularly significant during maneuvers that require sharp turns or climbs, as these actions typically involve higher angles of attack. For instance, during a steep climb, the aircraft experiences a considerable increase in induced drag, which can affect fuel efficiency and performance. Understanding this concept is essential not just for pilots but also for engineers who design aircraft. They must consider how to minimize induced drag while maximizing lift, which often involves optimizing wing shapes and configurations.In practical terms, reducing induced drag can be achieved through various aerodynamic enhancements. Winglets, for example, are small vertical extensions at the tips of wings that help mitigate the formation of vortices, thereby reducing induced drag. Additionally, maintaining an optimal cruise speed can further help in managing induced drag, allowing for more efficient flight operations.In conclusion, induced drag is a fundamental concept in the field of aerodynamics that has significant implications for both aviation safety and efficiency. By understanding how induced drag operates and its relationship with lift and speed, pilots and engineers can make informed decisions that enhance aircraft performance. As technology advances, ongoing research into minimizing induced drag will continue to play a vital role in the evolution of aircraft design and operation, ultimately leading to safer and more efficient air travel.

理解空气动力学的原理对于任何对航空感兴趣的人来说都是至关重要的。每位飞行员和航空工程师必须掌握的关键概念之一是诱导阻力。这个术语指的是由于升力产生而产生的阻力。当飞机的机翼产生升力时，它们也会扰动周围的气流，导致一种称为诱导阻力的现象。基本上，这种类型的阻力是升力产生过程的副产品。深入探讨诱导阻力的机制，我们首先需要了解升力是如何产生的。当飞机在空气中移动时，其机翼与空气分子相互作用，导致机翼上下表面之间产生压力差。这种压力差就是产生升力的原因。然而，升力的产生也会在翼尖形成涡流，这是空气旋转的区域。这些涡流负责增加飞机的整体阻力，从而导致诱导阻力。诱导阻力的一个重要方面是它与飞机速度成反比。在较低速度下，攻角增加以维持升力，这反过来又增强了涡流的强度，从而增加了诱导阻力。相反，随着飞机速度的增加，攻角可以降低，从而减少涡流的强度并降低诱导阻力。这种关系说明了为什么飞行员在起飞和着陆阶段通常会经历更高的阻力，此时飞机以较慢的速度移动。此外，诱导阻力在需要急转弯或爬升的机动过程中尤为显著，因为这些动作通常涉及较高的攻角。例如，在陡坡爬升期间，飞机会经历相当大的诱导阻力的增加，这可能会影响燃油效率和性能。理解这个概念不仅对飞行员至关重要，对设计飞机的工程师也是如此。他们必须考虑如何在最大化升力的同时最小化诱导阻力，这通常涉及优化机翼形状和配置。在实际操作中，可以通过各种空气动力学增强措施来减少诱导阻力。例如，翼尖小翼是机翼末端的小垂直延伸，有助于减轻涡流的形成，从而减少诱导阻力。此外，保持最佳巡航速度也可以进一步帮助管理诱导阻力，使飞行操作更加高效。总之，诱导阻力是空气动力学领域的一个基本概念，对航空安全和效率具有重要意义。通过理解诱导阻力的运作方式及其与升力和速度的关系，飞行员和工程师可以做出明智的决策，从而提高飞机性能。随着技术的进步，持续研究如何最小化诱导阻力将继续在飞机设计和操作的演变中发挥至关重要的作用，最终导致更安全和更高效的航空旅行。