第六十九章 第一次拦截
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戴着手套的手,开始有些出汗,随着速度的增加,座舱内的温度开始增加,当达到3马赫的时候,座舱内的温度会高达七十度,不过,对于苏联飞行员来说,这点困难是能够忍受的。龙腾小说ltxsba.com
“目标距离三百公里,高度两万八,速度三点二马赫。”耳机里继续传来引导员的声音。
三百公里,距离好像很远,但是,对于以三马赫的速度飞行的飞机来说,只是五分钟的时间而已,而两架都是三马赫左右的飞机相对飞行的话,时间就是两分钟左右。
留给安德烈的拦截只有一次机会!
雷达开机!
钢铁战机的机头处,蓝宝石-25雷达的倒置的卡塞格伦天线,向着前方的空域,辐射出了强劲的电磁信号,六百千瓦的峰值功率,瞬间就让安德烈感觉到座舱里的仪表的灯光都暗淡了。
机舱内的温度继续升高,雷达消耗的大部分电能,都转化成了热量,传进了座舱内。落后的电子管!虽然听起来功率很强大,但是其实好多都成了无用功!安德烈扫了眼雷达屏幕,此时自己也已经冲上了两万八千米的高空,方位正确,拦截已经进入了倒计时。
在研制的时候,就把雷达隐身作为重要指标的黑鸟,却因为高速飞行跟空气摩擦,形成了大片的电离云,信号特征相当明显。
十几秒后,雷达屏幕上,出现了一个墨绿色的亮点,发现目标!
单脉冲模式,锁定!
蓝宝石-25雷达开始发出一个个的脉冲信号,打到目标上,再反射回来,同时,米格-25的电子设备,开始解算火控诸元,给雷达制导的R-40R导弹提供初始数据。
多普勒方式是为了过滤地面的反射杂波的,现在的高空中,单脉冲是最好的选择。
这似乎是一个漫长的过程,全电子管的火控系统,虽然也有机载计算机,其实就是电子管的模拟运算电路,要是有个英特尔的8086芯片,怕是不到一秒的时间就解算出来了。
双方的距离在飞快地接近之中,终于,在相距四十公里的距离上,耳机里传来了熟悉的声音。
“完成锁定,请求发射。”安德烈的手放在了红色的按钮上,现在就差最后一步了,必须有地面的命令,才能够发射导弹。
“开火!”地面的命令简短直接。
开火!安德烈的手使劲按下了发射按钮。
机翼下,火光闪动,四枚巨大的R-40导弹,两枚红外型,两枚雷达型,依次离开了挂架。
此时,双方的距离,已经缩短到了二十公里!
R-40导弹是专门提供给米格-25使用的,为了能够在三马赫下发射,导弹做了很多改进,红外型的导引头使用了更大量的液氮来冷却,弹体也做了专门的防热处理。
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