条件苛刻的合金 争夺航天制高点必须发展大推力液体燃料火箭。美国大力神系列火箭单台推力235吨;欧洲阿里阿娜5系列单台推力500吨;俄罗斯质子系列火箭单台推力495吨。而我国的长征系列火箭单台推力与航天先进国家有一定差距。这种差距主要体现在火箭发动机上,而发动机差距实质上就是制造发动机的高温合金材料的差距。 火箭发动机上使用的大量关键 Harsh conditions for the competition for high alloy space must develop a large thrust liquid fuel rockets. Hercules series rocket single thrust 235 tons; Europe Ariana 5 series single thrust 500 tons; Russian proton series rocket single thrust 495 tons. However, there is a certain gap between the single thrust of the Long March series of rocket vehicles in China and the advanced countries in space flight. This gap is mainly reflected in the rocket engine, and the engine gap is essentially the engine manufacturing high-temperature alloy material gap. A lot of the keys used on the rocket engine