scramjet

简明释义

英[ˈskræmˌdʒet]美[ˈskræmˌdʒet]

n. 超音速燃烧冲压喷气发动机

英英释义

单词用法

同义词

反义词

例句

1.The Chinese allowed a peek into multiple aspects of their scramjet efforts at the recent American Institute of Aeronautics and Astronautics Joint Propulsion Conference in Cincinnati.

在最近辛辛那提举行的美国航空航天联合推进技术研究所大会上，中国让外界得以一窥其在冲压发动机方面的多个进展。

2.Regenerative cooling technology is one of the key technologies to thermally protect scramjet chamber.

再生冷却技术是超燃冲压发动机燃烧室热防护的关键技术。

3.The internal flow fields in scramjet are very complex, due to the interaction of shock waves, expansion waves, boundary layer and strong reactions.

超燃冲压发动机的内部流场很复杂，存在激波、膨胀波、附面层和剧烈的化学反应等相互作用，给数值模拟带来很大的困难。

4.Here it would reach supersonic speeds and then shift to its scramjet engine. The scramjet scoops up air and mixes it with fuel so it burns as the mixture flows through the engine at supersonic speeds.

这里它将达到超音速然后超高速冲压喷气发动机切换成工作状态，迎面气流进入发动机，与燃料混合，混合物在超音速状态流过引擎。

5.The longest previous hypersonic scramjet flight test, performed by a NASA X-43 in 2004, was faster, but lasted only about 10 seconds and used less logistically supportable hydrogen fuel.

先前最长的冲压式喷气发动机下极超音速飞行测试，是在2004年由NASA的X-43进行的，速度更快，但只持续了10s。

6.Scramjet combustor design optimization for a test scramjet model engine is conducted by employing genetic algorithms, and an optimal design much better than original design is obtained.

采用遗传算法对某试验超燃冲压模型发动机的燃烧室构型参数进行了优化设计，所得方案的性能大大优于实际方案。

7.In such a scheme, a payload vehicle (holding, say, a satellite) would piggyback to high altitude aboard the scramjet, which in theory could reach near-orbital speeds.

在这个方案中，一个载物飞行器(比如说搭载着卫星)将(首先)搭载超燃冲压发动机进入相当高度，理论上能够达到近似轨道速度。

8.Fuel supply control system is the core of the scramjet control system. Its performance and reliability decide the performance and reliability of the scramjet.

燃油供给系统控制是超燃冲压发动机控制系统的核心，它的性能和可靠性决定了整个超燃冲压发动机系统的优劣和发动机的安全可靠。

9.Scramjet is the perfect propulsive device to hypersonic vehicle, and is a hot issue in current hypersonic technology area.

超燃冲压发动机是高超声速飞行器理想的动力装置，是当前高超声速技术领域的研究热点。

10.Researchers are testing a prototype scramjet 超音速燃烧喷气发动机 that could revolutionize space travel.

研究人员正在测试一个原型scramjet 超音速燃烧喷气发动机，这可能会彻底改变太空旅行。

11.A successful test flight of the scramjet 超音速燃烧喷气发动机 marked a significant milestone in aerospace engineering.

一次成功的scramjet 超音速燃烧喷气发动机测试飞行标志着航空航天工程的重要里程碑。

12.The military is interested in using scramjet 超音速燃烧喷气发动机 technology for faster missile delivery systems.

军方对使用scramjet 超音速燃烧喷气发动机技术来实现更快的导弹投送系统非常感兴趣。

13.The new design of the scramjet 超音速燃烧喷气发动机 allows for more efficient travel at hypersonic speeds.

新的设计使得这个scramjet 超音速燃烧喷气发动机能够以更高的效率在超音速下旅行。

14.The efficiency of the scramjet 超音速燃烧喷气发动机 makes it a promising option for future commercial flights.

由于其高效性，scramjet 超音速燃烧喷气发动机成为未来商业航班的有前途的选择。

作文

The advancement of aerospace technology has led to the development of various innovative propulsion systems, one of the most exciting being the scramjet. A scramjet (supersonic combustion ramjet) is a type of jet engine designed to operate at hypersonic speeds, typically above Mach 5. Unlike traditional jet engines that rely on moving parts to compress air, a scramjet utilizes the high-speed flow of air entering the engine to compress it before combustion occurs. This unique mechanism allows for a more efficient and effective propulsion system, making it an ideal choice for future space vehicles and hypersonic aircraft.The basic principle behind a scramjet is relatively simple yet ingenious. As the aircraft travels at supersonic speeds, air enters the engine at a high velocity. The design of the scramjet ensures that the airflow remains supersonic throughout the combustion chamber. This is crucial because it allows the engine to burn fuel while maintaining the high speed of the incoming air, leading to greater thrust and efficiency compared to conventional engines.One of the most significant advantages of a scramjet is its ability to operate without moving parts. Traditional engines, such as turbojets or turbofans, require complex machinery to compress air and facilitate combustion. In contrast, a scramjet relies solely on the aerodynamic design to achieve compression, which not only reduces weight but also minimizes mechanical failure points. This simplicity can lead to increased reliability and lower maintenance costs over time.However, the scramjet is not without its challenges. One of the primary obstacles in developing practical scramjet technology is achieving stable combustion at hypersonic speeds. The extreme conditions within the engine, including high temperatures and pressures, can make it difficult to maintain a consistent flame. Researchers are continually exploring new materials and designs to overcome these issues, with promising results emerging from various experimental programs.Another challenge is the need for a suitable launch platform. A scramjet cannot function effectively from a standstill; it requires a significant initial velocity to reach the speeds necessary for operation. This means that scramjet engines are often integrated into larger vehicles, such as rockets or hypersonic gliders, which can accelerate them to the required speeds before the scramjet takes over.Despite these challenges, the potential applications of scramjet technology are vast. Hypersonic travel could revolutionize air travel, significantly reducing flight times across the globe. For instance, a flight from New York to London could take less than an hour with a scramjet-powered aircraft. Additionally, scramjet technology holds promise for military applications, enabling faster and more agile missile systems that can evade detection and interception.In conclusion, the scramjet represents a fascinating leap forward in propulsion technology. Its unique design and potential for high-speed travel offer exciting possibilities for the future of aerospace engineering. As researchers continue to overcome the challenges associated with scramjet development, we may soon see this technology become a reality in both commercial and military aviation, paving the way for a new era of hypersonic flight.

航空航天技术的进步导致了各种创新推进系统的发展，其中最令人兴奋的之一就是scramjet。scramjet（超音速燃烧冲压喷气发动机）是一种设计用于在高超音速下运行的喷气发动机，通常超出马赫5。与传统喷气发动机依靠运动部件压缩空气不同，scramjet利用进入发动机的高速空气流动在燃烧发生之前进行压缩。这种独特的机制使得推进系统更高效、更有效，成为未来航天器和高超音速飞机的理想选择。scramjet的基本原理相对简单却极具巧妙性。当飞机以超音速飞行时，空气以高速度进入发动机。scramjet的设计确保气流在整个燃烧室内保持超音速。这一点至关重要，因为它允许发动机在保持进入空气的高速的同时燃烧燃料，从而导致比传统发动机更大的推力和效率。scramjet的一个显著优势是其无需运动部件的能力。传统发动机，如涡喷或涡扇，需要复杂的机械装置来压缩空气并促进燃烧。相比之下，scramjet仅依靠气动设计来实现压缩，这不仅减轻了重量，还最小化了机械故障点。这种简单性可以提高可靠性并降低长期维护成本。然而，scramjet并非没有其挑战。开发实用的scramjet技术的主要障碍之一是在高超音速下实现稳定燃烧。在发动机内部的极端条件下，包括高温和高压，保持一致的火焰可能很困难。研究人员正在不断探索新材料和设计，以克服这些问题，来自各种实验项目的有希望的结果正在出现。另一个挑战是需要合适的发射平台。scramjet无法有效地从静止状态运行；它需要相当大的初始速度才能达到操作所需的速度。这意味着scramjet发动机通常集成在更大的载具中，例如火箭或高超音速滑翔机，这些载具可以将其加速到所需速度，然后scramjet接管。尽管面临这些挑战，scramjet技术的潜在应用是广泛的。高超音速旅行可能会彻底改变航空旅行，显著减少全球航班时间。例如，纽约到伦敦的航班如果使用scramjet动力飞机，可以在不到一小时内完成。此外，scramjet技术在军事应用方面也具有潜力，使得更快、更灵活的导弹系统能够避开探测和拦截。总之，scramjet代表了推进技术的迷人飞跃。其独特的设计和高速度旅行的潜力为航空航天工程的未来提供了令人兴奋的可能性。随着研究人员继续克服与scramjet开发相关的挑战，我们可能很快就会看到这一技术在商业和军事航空中成为现实，为高超音速飞行的新纪元铺平道路。