stall margin

简明释义

失速喘振边界

英英释义

例句

1.A higher stall margin can be achieved by modifying the wing shape.

通过修改机翼形状可以实现更高的失速裕度。

2.The aircraft's design must ensure a sufficient stall margin to maintain safe operations during critical phases of flight.

飞机的设计必须确保有足够的失速裕度以维持在飞行关键阶段的安全操作。

3.Pilots are trained to recognize when the stall margin is decreasing and take corrective action.

飞行员接受训练，以识别失速裕度降低的情况并采取纠正措施。

4.The stall margin is crucial for preventing unintentional stalls during maneuvers.

在机动过程中，失速裕度对于防止意外失速至关重要。

5.During the test flight, engineers monitored the stall margin closely to ensure safety.

在试飞过程中，工程师密切监测失速裕度以确保安全。

作文

In aviation, understanding the concept of stall margin is crucial for pilots and engineers alike. The term refers to the difference between the critical angle of attack at which an aircraft will stall and the current angle of attack during flight. A higher stall margin indicates that the aircraft is operating safely away from the stalling condition, while a lower margin suggests a greater risk of stalling. This concept is not only essential for ensuring safety in flight but also plays a significant role in aircraft design and performance assessment.When an aircraft approaches its critical angle of attack, airflow over the wings begins to separate, leading to a loss of lift and increased drag. This phenomenon is known as a stall. The stall margin provides a buffer zone for pilots to maneuver safely without risking a stall. For instance, if a pilot knows that their aircraft has a stall margin of 5 degrees, they can confidently operate the aircraft up to 5 degrees below the critical angle of attack without fear of stalling.The importance of maintaining an adequate stall margin is evident during various phases of flight, particularly during takeoff and landing. During these critical moments, pilots must manage their speed and angle of attack carefully. A sufficient stall margin allows pilots to execute maneuvers, such as turns or climbs, without inadvertently entering a stall condition. This is especially vital in situations where quick decisions are required, such as avoiding obstacles or dealing with sudden changes in weather conditions.Aircraft designers also pay close attention to stall margin during the development process. By analyzing the aerodynamic characteristics of a new aircraft, engineers can optimize wing shapes and control surfaces to enhance the stall margin. For example, adding leading-edge devices like slats or vortex generators can improve airflow over the wings, thereby increasing the stall margin and enhancing overall flight safety.Moreover, the stall margin can vary depending on factors such as weight, altitude, and configuration of the aircraft. Pilots are trained to recognize how these variables affect the stall margin and to adjust their flying techniques accordingly. For instance, when flying at high altitudes, where air density is lower, the stall margin may decrease, requiring pilots to be more vigilant and proactive in managing their flight parameters.In conclusion, the concept of stall margin is fundamental in ensuring safe and efficient aircraft operation. Both pilots and engineers must have a thorough understanding of this term to mitigate the risks associated with stalling. By maintaining an adequate stall margin, pilots can navigate their aircraft confidently, while engineers can design safer and more reliable aircraft. As aviation technology continues to evolve, the principles surrounding stall margin will remain a cornerstone of flight safety and performance optimization.

在航空领域，理解失速余量的概念对飞行员和工程师来说至关重要。这个术语指的是飞机失速的临界攻角与飞行中当前攻角之间的差异。较高的失速余量表明飞机在安全地远离失速状态下运行，而较低的余量则表明失速的风险更大。这个概念不仅对确保飞行安全至关重要，还在飞机设计和性能评估中发挥着重要作用。当飞机接近其临界攻角时，机翼上的气流开始分离，导致升力丧失和阻力增加。这种现象称为失速。失速余量为飞行员提供了一个缓冲区，使他们能够安全地操纵飞机，而不必担心失速。例如，如果飞行员知道他们的飞机有5度的失速余量，他们可以自信地将飞机操作到距离临界攻角5度的位置，而无需担心失速。在飞行的各个阶段，尤其是在起飞和着陆期间，保持足够的失速余量的重要性显而易见。在这些关键时刻，飞行员必须仔细管理自己的速度和攻角。充足的失速余量使飞行员能够执行转弯或爬升等机动，而不会无意中进入失速状态。在需要快速决策的情况下，例如避免障碍物或应对突如其来的天气变化，这一点尤为重要。飞机设计师在开发过程中也非常关注失速余量。通过分析新飞机的空气动力学特性，工程师可以优化机翼形状和控制面，以增强失速余量。例如，添加前缘装置如缝翼或涡流发生器可以改善机翼上的气流，从而提高失速余量并增强整体飞行安全性。此外，失速余量可能会因飞机的重量、高度和配置等因素而有所不同。飞行员接受过培训，以识别这些变量如何影响失速余量，并相应调整他们的飞行技术。例如，在高海拔飞行时，由于空气密度较低，失速余量可能会减少，要求飞行员更加警惕，积极管理他们的飞行参数。总之，失速余量的概念是确保飞机安全高效运行的基础。飞行员和工程师都必须深入理解这个术语，以减轻与失速相关的风险。通过保持足够的失速余量，飞行员可以自信地驾驶飞机，而工程师则可以设计出更安全、更可靠的飞机。随着航空技术的不断发展，围绕失速余量的原则将继续成为飞行安全和性能优化的基石。