冲压发动机

The ramjet engine is a type of airbreathing jet engine that uses the vehicle's forward motion to compress incoming air without an axial compressor.
翻译：冲压喷气发动机是一种吸气式喷气发动机，它利用飞行器的前进运动在没有轴向压缩机的情况下压缩进来的空气。
Ramjets work most efficiently at supersonic speeds around Mach 3.
翻译：冲压喷气发动机在大约马赫数3的超音速下工作效率最高。
A ramjet-powered missile can travel faster and farther than a traditional rocket-powered one.
翻译：冲压喷气导弹比传统的火箭动力导弹飞得更快、更远。
The scramjet, or supersonic combustion ramjet, is an advanced version of the ramjet engine.
翻译：超燃冲压喷气发动机或超音速燃烧冲压喷气发动机是冲压喷气发动机的一种先进版本。
Due to their simplicity, ramjets are often used in military applications such as cruise missiles.
翻译：由于其简单性，冲压喷气发动机常用于巡航导弹等军事应用。
Unlike turbojet engines, ramjets have no moving parts, making them more reliable and easier to maintain.
翻译：与涡轮喷气发动机不同，冲压喷气发动机没有活动部件，使其更可靠且更容易维护。
The first successful flight of a ramjet-powered aircraft took place in 1947 with the testing of the Bell X-1.
翻译：首次成功的冲压喷气动力飞机飞行发生在1947年，当时进行了贝尔X-1的测试。
Ramjet engines do not operate efficiently at low speeds, so they require assistance from other propulsion systems during takeoff and acceleration.
翻译：冲压喷气发动机在低速下效率不高，因此在起飞和加速期间需要其他推进系统的辅助。
The high-speed exhaust produced by a ramjet engine makes it an ideal choice for hypersonic flight research.
翻译：冲压喷气发动机产生的高速排气使其成为高超音速飞行研究的理想选择。
Because ramjets rely on external air for combustion, they cannot function in space where there is no atmosphere.
翻译：因为冲压喷气发动机依赖于外部空气进行燃烧，所以它们无法在没有大气层的空间中运行。