Internal exposure of corner bullets in the United States: laser guidance hits where it is aimed.

Military fans who played Call of Duty 4 to kill Zakayev must be impressed by the details of long-range sniper. In reality, snipers need to consider a variety of complex factors including wind deviation, temperature, humidity and Coriolis effect (earth autobiographical deviation) before long-range sniper. At present, the US military has developed a revolutionary "turning" guided bullet, which can hit the target without considering the above factors or even maintaining the traditional "three points and one line" shooting method.

The picture shows a screenshot of the mission to kill Zakayev in Call of Duty 4. The big picture shows the relative distance between the target (red circle motorcade) and the sniper point. The small picture shows a screenshot of Barrett's anti-equipment rifle sight. Captain McMillan (observer), please pay attention to the fluttering direction of the flag on the car to correct your line of sight.

This kind of guided bullet originated from DARPA's "EXACTO" research project, which aims to develop a high-precision bullet with "turning" ability and the longest range of 5,000 meters (currently the longest sniper record in the world is 2,375 meters). The picture shows the guided bullets displayed by US military researchers. It can be seen that the shape is very different from the traditional bullet, not only the bullet body becomes longer, but also there is a brake tail at the tail.

The project is jointly managed by Lockheed Martin and Sandia National Laboratory. 20 12 In early February, Lockheed Martin announced the development of a laser-guided bullet shaped like a dart. There is an optical sensor at the front end, which is used to search and track the laser guidance point that is shooting at the target. The internal sensor can transmit the target data to the guidance and command element in real time, which can calculate the ideal flight trajectory and control the electromagnetic transmission device through the 8-bit central processor. The picture shows the "Precision Guided Bullets" section.

The picture shows a screenshot of the actual section of the "precision guided bullet". The display structure is completely different from the traditional bullet, and you can see the micro ballistic computer and sensor.

The transmission system of the guided bullet includes a driving motor and a fin-shaped micro-controllable tail. The driving motor can provide power for the traditional system, and the micro-tail can constantly adjust the trajectory, so that the bullet can hit the target with a curved trajectory (even if the target hides behind the wall). The picture shows the time-lapse photography of the US military conducting guided bullet tests at Sandia National Laboratory. The trajectory seen in the picture is actually left by the LED indicator light at the tail of the guided bullet. It can be clearly seen that the trajectory can be changed many times in flight until it hits the target.

The picture directly shows the whole engagement process of laser-guided bullets. Before shooting, the sniper only needs to continuously irradiate the target with laser, without maintaining the traditional "three points and one line" aiming mode. Guided bullets will automatically track the target after shooting until they hit, just like guided bombs, which are very suitable for attacking long-distance moving targets.

When a sniper uses a guided bullet, as long as he locks the target, no matter which direction he shoots, the bullet can finally hit the target through self-correcting trajectory. This hand-drawn painting shows the remarkable difference between guided bullets and traditional bullets. Traditional bullets need to rotate (up) to stabilize the trajectory, while guided bullets (down) don't need to rotate, and can directly change the flight trajectory through the tail wing. Some people say that with this kind of bullet, everyone can become a sharpshooter, and perhaps the era of snipers is over. The actual combat effect of guided bullets remains to be seen.

The optical sensor (bottom) and the movable tail (top) of the guided bullet are marked respectively.