specific thrust

简明释义

比推力

英英释义

例句

1.Engineers often compare the specific thrust of different propulsion systems to determine the best option for a new aircraft.

工程师们经常比较不同推进系统的比推力，以确定新飞机的最佳选择。

2.In rocket design, maximizing specific thrust is crucial for achieving higher velocities in space.

在火箭设计中，最大化比推力对实现更高的太空速度至关重要。

3.The engine's performance is measured by its specific thrust, which indicates the amount of thrust produced per unit of weight.

发动机的性能通过其比推力来衡量，表示每单位重量产生的推力。

4.A higher specific thrust can lead to better acceleration and overall performance of the aircraft.

更高的比推力可以带来更好的加速和整体性能。

5.The specific thrust of this jet engine allows it to operate efficiently at high altitudes.

这款喷气发动机的比推力使其能够在高海拔地区高效运行。

作文

In the field of aerospace engineering, understanding the concept of specific thrust is crucial for designing efficient propulsion systems. Specific thrust refers to the thrust produced per unit mass flow rate of the propellant. It is an important parameter that helps engineers evaluate the performance of engines, especially in aircraft and spacecraft applications. The higher the specific thrust, the more effective the engine is at converting fuel into thrust, which directly impacts the vehicle's speed and maneuverability.To illustrate this concept, let's consider two different types of propulsion systems: turbojet engines and rocket engines. Turbojet engines operate by compressing air, mixing it with fuel, and igniting the mixture. The resulting high-pressure exhaust gases are expelled at the rear, generating thrust. In this case, the specific thrust is influenced by the air density and temperature, as well as the efficiency of the combustion process.On the other hand, rocket engines carry both fuel and oxidizer, allowing them to operate in the vacuum of space where there is no atmospheric oxygen. The specific thrust of a rocket engine is generally higher than that of a turbojet engine because rockets can achieve much greater exhaust velocities. This is particularly important for missions beyond Earth's atmosphere, where every ounce of thrust matters.The calculation of specific thrust is straightforward: it can be expressed mathematically as the thrust produced divided by the mass flow rate of the propellant. For example, if a rocket engine produces 10,000 Newtons of thrust with a propellant flow rate of 1 kilogram per second, the specific thrust would be 10,000 N/kg/s. This metric allows engineers to compare different engine designs and select the most suitable one for a particular application.Moreover, the specific thrust can also aid in optimizing the fuel consumption of an engine. By maximizing this parameter, engineers can ensure that a vehicle has the necessary thrust-to-weight ratio for takeoff and sustained flight. This optimization is vital in achieving cost-effective space missions, where reducing weight and improving efficiency can lead to significant savings.In conclusion, the concept of specific thrust plays a pivotal role in the design and evaluation of propulsion systems in aerospace engineering. Understanding how it influences engine performance helps engineers create more efficient and powerful engines, whether for aircraft or spacecraft. As we continue to explore the boundaries of aviation and space travel, the importance of specific thrust will only grow, guiding innovations that push the limits of what is possible in flight.

在航空航天工程领域，理解特定推力的概念对设计高效的推进系统至关重要。特定推力指的是每单位质量流量的推进剂所产生的推力。这是一个重要的参数，帮助工程师评估发动机的性能，特别是在飞机和航天器应用中。特定推力越高，发动机将燃料转化为推力的效率越高，这直接影响到飞行器的速度和机动性。为了说明这个概念，让我们考虑两种不同类型的推进系统：涡喷发动机和火箭发动机。涡喷发动机通过压缩空气，将其与燃料混合并点燃，从而运作。由此产生的高压废气从后部排出，产生推力。在这种情况下，特定推力受空气密度和温度以及燃烧过程效率的影响。另一方面，火箭发动机则携带燃料和氧化剂，使其能够在没有大气氧气的真空中运行。火箭发动机的特定推力通常高于涡喷发动机，因为火箭可以实现更大的排气速度。这对于超出地球大气层的任务尤为重要，因为每一盎司的推力都至关重要。特定推力的计算很简单：它可以用产生的推力除以推进剂的质量流量来表示。例如，如果一个火箭发动机产生10,000牛顿的推力，推进剂流量为每秒1千克，那么特定推力就是10,000 N/kg/s。这个指标使工程师能够比较不同的发动机设计，并选择最适合特定应用的设计。此外，特定推力还可以帮助优化发动机的燃料消耗。通过最大化这一参数，工程师可以确保飞行器具有足够的推重比以进行起飞和持续飞行。这种优化在实现成本效益高的太空任务时至关重要，因为减少重量和提高效率可以带来显著的节省。总之，特定推力的概念在航空航天工程的推进系统设计和评估中发挥着关键作用。理解它如何影响发动机性能，帮助工程师创建更高效、更强大的发动机，无论是用于飞机还是航天器。随着我们继续探索航空和太空旅行的边界，特定推力的重要性只会增加，指导推动飞行可能性的创新。