lift drag ratio

简明释义

升阻比

英英释义

例句

1.A higher lift drag ratio means that an aircraft can fly farther on less fuel.

更高的升阻比意味着飞机可以用更少的燃料飞得更远。

2.Engineers often use simulations to analyze the lift drag ratio of different wing designs.

工程师们经常使用模拟来分析不同机翼设计的升阻比。

3.When designing a new glider, the target lift drag ratio is a critical factor.

在设计新滑翔机时，目标升阻比是一个关键因素。

4.The aircraft's performance can be significantly improved by optimizing its lift drag ratio.

通过优化飞机的升阻比，可以显著提升其性能。

5.Pilots are trained to understand how to maximize the lift drag ratio during flight.

飞行员接受训练，以了解如何在飞行中最大化升阻比。

作文

The concept of lift drag ratio is crucial in the fields of aerodynamics and aviation. It refers to the relationship between the lift generated by an aircraft's wings and the drag that opposes its motion through the air. Understanding this ratio is essential for engineers and pilots alike, as it directly impacts the performance, efficiency, and safety of an aircraft.

To grasp the significance of the lift drag ratio, one must first understand what lift and drag are. Lift is the upward force that allows an aircraft to rise off the ground, created by the pressure difference between the upper and lower surfaces of the wings. Drag, on the other hand, is the resistance force that acts opposite to the direction of motion. It is caused by friction and changes in air pressure as the aircraft moves through the atmosphere.

The lift drag ratio is calculated by dividing the lift force by the drag force. A higher ratio indicates that an aircraft can generate more lift with less drag, which is a desirable trait for any flying vehicle. For instance, gliders are specifically designed to have a high lift drag ratio, allowing them to stay airborne for extended periods without the need for an engine. This efficiency makes them ideal for soaring and long-distance flight.

In contrast, fighter jets may have a lower lift drag ratio due to their design, which prioritizes speed and maneuverability over efficiency. These aircraft are built to perform complex aerial maneuvers, and while they may not glide as efficiently, their ability to quickly change direction is paramount in combat situations.

The implications of the lift drag ratio extend beyond just the design of aircraft. It also plays a significant role in the environmental impact of aviation. Aircraft with a higher lift drag ratio tend to consume less fuel, leading to lower carbon emissions. As the aviation industry continues to seek ways to reduce its environmental footprint, optimizing the lift drag ratio becomes increasingly important.

In conclusion, the lift drag ratio is a fundamental concept in aviation that affects everything from aircraft design to operational efficiency and environmental sustainability. By maximizing this ratio, engineers and pilots can enhance the performance of their aircraft, making flying safer, more efficient, and more environmentally friendly. Understanding and improving the lift drag ratio will continue to be a focus in the aerospace industry as technology advances and the demand for sustainable aviation grows.

“升力阻力比”这个概念在空气动力学和航空领域至关重要。它指的是飞机机翼产生的升力与抵抗其在空气中运动的阻力之间的关系。理解这个比率对于工程师和飞行员来说都至关重要，因为它直接影响到飞机的性能、效率和安全性。

要掌握“升力阻力比”的重要性，首先必须理解升力和阻力的概念。升力是使飞机能够离开地面的向上力量，由机翼上下表面之间的压力差产生。另一方面，阻力是作用于运动方向相反的阻力。它是由于摩擦和飞机在大气中运动时空气压力的变化而产生的。

“升力阻力比”是通过将升力除以阻力来计算的。更高的比率表明飞机能够以更少的阻力产生更多的升力，这是任何飞行器所期望的特征。例如，滑翔机专门设计为具有高“升力阻力比”，使其能够在没有发动机的情况下长时间保持空中。这种效率使它们非常适合翱翔和长途飞行。

相反，战斗机可能由于其设计而具有较低的“升力阻力比”，因为它们优先考虑速度和机动性而非效率。这些飞机被设计用于执行复杂的空中机动，尽管它们可能不如滑翔机那样高效，但在战斗情况下，快速改变方向的能力至关重要。

“升力阻力比”的影响不仅限于飞机设计。它在航空的环境影响中也起着重要作用。具有较高“升力阻力比”的飞机往往消耗更少的燃料，从而导致更低的碳排放。随着航空业不断寻求减少其环境足迹，优化“升力阻力比”变得越来越重要。

总之，“升力阻力比”是航空中的一个基本概念，影响着从飞机设计到操作效率和环境可持续性的方方面面。通过最大化这一比率，工程师和飞行员可以提高飞机的性能，使飞行更加安全、高效和环保。理解和改善“升力阻力比”将继续成为航空航天工业的关注点，因为技术不断进步，航空可持续发展的需求日益增长。