mach angle

简明释义

马赫角

英英释义

例句

1.The mach angle determines the shock wave pattern around a supersonic object.

马赫角决定了超音速物体周围的冲击波模式。

2.Calculating the mach angle helps predict the behavior of the aircraft at high speeds.

计算马赫角有助于预测飞机在高速下的行为。

3.The pilot adjusted the aircraft's trajectory to maintain the optimal mach angle for cruising speed.

飞行员调整了飞机的轨迹，以保持最佳的马赫角以实现巡航速度。

4.As the plane approached the speed of sound, the mach angle began to decrease.

当飞机接近音速时，马赫角开始减小。

5.Understanding the mach angle is crucial for engineers designing supersonic jets.

理解马赫角对设计超音速喷气机的工程师至关重要。

作文

The concept of the mach angle is a crucial aspect of aerodynamics, especially when discussing the behavior of supersonic and hypersonic flows. When an object moves through a fluid medium, such as air, at a speed greater than the speed of sound, it generates shock waves. The angle formed between the direction of the object's motion and the wavefronts of these shock waves is known as the mach angle. Understanding this angle is essential for engineers and scientists who design high-speed aircraft and missiles.To grasp the significance of the mach angle, one must first understand the basics of Mach number. The Mach number is a dimensionless quantity that represents the ratio of the speed of an object to the speed of sound in the surrounding medium. For example, if an aircraft travels at a speed of 340 meters per second in air where the speed of sound is also 340 meters per second, its Mach number is 1, indicating that it is traveling at the speed of sound. When the Mach number exceeds 1, the aircraft is considered to be flying supersonically, and the mach angle becomes relevant.The mach angle can be calculated using the formula: sin(θ) = 1/M, where θ is the mach angle and M is the Mach number. This relationship shows that as the Mach number increases, the mach angle decreases. For instance, if an aircraft is flying at Mach 2, the mach angle would be approximately 30 degrees, while at Mach 3, it would be around 19 degrees. This decreasing angle has significant implications for the design of aircraft, as it affects the shape and size of the shock waves produced.In practical terms, the mach angle influences several factors, including drag, stability, and control of high-speed vehicles. As the mach angle becomes smaller with increasing speed, the shock waves become more concentrated, leading to higher pressures and temperatures on the aircraft's surface. Engineers must take these factors into account to ensure that materials can withstand the extreme conditions encountered during supersonic flight.Furthermore, the mach angle plays a critical role in the development of technologies such as supersonic transport (SST) and hypersonic vehicles. These advanced aircraft and spacecraft require precise calculations to optimize their performance and minimize drag. By understanding the mach angle, designers can better predict how their vehicles will behave in various flight regimes, enabling them to create more efficient and effective designs.In conclusion, the mach angle is a fundamental concept in the field of aerodynamics that helps engineers and scientists understand the behavior of objects moving at supersonic speeds. Its relationship with the Mach number provides valuable insights into the dynamics of shock waves and their impact on high-speed flight. As technology continues to advance, the importance of mastering the mach angle will only grow, paving the way for new innovations in aviation and aerospace engineering.

“马赫角”是空气动力学中的一个重要概念，尤其在讨论超音速和高超音速流动的行为时。当一个物体以超过声速的速度穿过流体介质（如空气）时，它会产生冲击波。物体运动方向与这些冲击波波前之间形成的角度被称为“马赫角”。理解这个角度对于设计高速飞机和导弹的工程师和科学家至关重要。要理解“马赫角”的重要性，首先必须了解马赫数的基本知识。马赫数是一个无量纲量，表示物体速度与周围介质中声速的比率。例如，如果一架飞机以每秒340米的速度飞行，而此时空气中的声速也是340米每秒，那么它的马赫数就是1，表明它正以声速飞行。当马赫数超过1时，飞机被认为是超音速飞行，此时“马赫角”变得相关。“马赫角”可以使用公式计算：sin(θ) = 1/M，其中θ是“马赫角”，M是马赫数。这个关系表明，随着马赫数的增加，“马赫角”会减小。例如，如果一架飞机以马赫2飞行，马赫角大约为30度，而在马赫3时，则约为19度。这个减小的角度对飞机设计有重要影响，因为它影响产生的冲击波的形状和大小。在实际应用中，“马赫角”影响多个因素，包括高速飞行器的阻力、稳定性和控制。随着马赫数的增加，“马赫角”变得更小，冲击波变得更加集中，导致飞机表面承受更高的压力和温度。工程师必须考虑这些因素，以确保材料能够承受超音速飞行过程中遇到的极端条件。此外，“马赫角”在开发超音速运输（SST）和高超音速飞行器等技术中也起着关键作用。这些先进的飞机和航天器需要精确的计算来优化其性能并最小化阻力。通过理解“马赫角”，设计师可以更好地预测他们的飞行器在不同飞行状态下的表现，从而创造出更高效、更有效的设计。总之，“马赫角”是空气动力学领域的一个基本概念，帮助工程师和科学家理解以超音速速度运动的物体的行为。它与马赫数的关系提供了关于冲击波动态及其对高速飞行影响的宝贵见解。随着技术的不断进步，掌握“马赫角”的重要性只会增加，为航空和航天工程的新创新铺平道路。