第七百一十八章 空中急刹车
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近了，更近了！几乎就是在离观众不到三千米的距离，所有的观众都能看到这架顶着白色激波尖椎的表演机。有一些不明所以的人，还在相当好奇，很奇怪啊，见过飞机拉烟，那应该是在飞机后面啊，现在，这飞机难道在机头有发烟装置？
就在地上的人的视线中，只见天空中的那架f-15战机，突然就变成了慢镜头。
咦，好奇怪，速度怎么慢了？
头顶的那个尖椎状的白气呢？怎么没有了？老子刚刚举起相机啊！
美国人在搞什么？
只有最熟悉战机的人，才都在脸上变色，美国人的这个动作，是在表演空中急刹车啊！
对，就是空中急刹车！就在架机，来到了人群的最适合观看的位置，克鲁斯按动按钮，开启了战机尾部的反推力装置。
推力反向叶片动作，气流被叶片阻挡，向前喷出，推力变成了阻力，瞬间就让战机的速度快速下降！同时，前面的鸭翼，此时也变成了竖着的状态，跟尾部的减速板一起，充当减速的另一个装置。
刚刚的飞行速度，是1.2马赫，而现在，已经快速地降低到了0.7马赫！克鲁斯感觉到自己的身体，被安全带紧紧地勒在座椅上，怕是有了印子了，而心脏，似乎也飞出了胸膛！
就在刚刚的时候，至少承受了6g的过载！这个空中急刹车，漂亮吗？
漂亮个鸟！站在塔台上，看着这架飞机呼啸而来，安德烈在心中满是鄙视，这动作，如果是降落的时候做，通过反推力减小滑跑距离，这还能让观众喝彩，而现在呢？就是在空中急刹车，有鸟用？能量空战理论，那可是美国人提出来的！这种主动减速的行为，简直就是找死啊！没有了速度，就没有了机动能力，当活靶子吗？
华而不实！跟己方的眼镜蛇机动一样，不过，己方的眼镜蛇机动，至少看起来更漂亮一些，容易引起喝彩，而现在呢？这一个空中急刹车，有什么看头？
“不好！”就在这时，安德烈突然大声喊道：“快，疏散观众！消防车，救护车准备！”
麻痹的，早就告诫过他要远离观众席，就是不听，还玩什么空中急刹车，现在倒好，从进气道，喷出火苗来了！
飞行员的眼睛，让安德烈迅速地看到了远处的天空中的那架美国战机，此时已经无比危险！你自己掉下来就算了，别砸了下面的观众！
反推力装置，在客机上已经普遍使用了，就是在后面多一个挡板，把喷出的气流推到前面去，提供减速的力矩，同时，在客机上也很容易实现，因为客机都是机翼下吊挂发动机的布局，发动机不需要进气道，直接就是裸露的。
而在战机上，就没有那么简单了，战机的发动机在尾部，前面需要进气道，而反推力的叶片，在开在发动机的中部的，结果，不知为何，被挡板挡回的气流，蹿到了进气道里！
这里就是普通的铝合金，几百度的温度就能融化的！而现在，炽热的尾焰，正在快速地融化进气道！一场志在必得的飞行表演，居然转化成了一场表演事故！
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