A few days ago, a small unmanned aircraft fell on the White House lawn, the United States Secret Service (SS, responsible for combating counterfeiting crimes, protecting the president and vice president and other dignitaries of the law enforcement agencies) suffered questioned. So, this small unmanned aerial vehicles, in the end there is much of a threat to the White House? Amplified that new terrorist attacks will become a nightmare it?
Military and civilian
In theory, any of the above does not take people can rely on the power that comes with flying in the sky means a period of time, it is regarded as generalized UAV. However, military and civilian UAV difference is huge: the size of a large military, self-important ( "Predator" unmanned aerial vehicles, the weight of more than nine hundred kilograms), long flight time, the price of natural not cheap (about $ 4.5 million); and civilian small unmanned aircraft, such as the fall in the White House that four-axis aircraft, estimated weight several kilograms, the price at between several hundred to several thousand dollars, compared with is a small toy only.
However, the military UAV design and manufacture of various countries are treated as highly confidential, as the arms export are subject to strict restrictions. For example, when the country had a country in the Middle East purchased a batch of drones, and later by the United States when many obstruction to the firmware upgrade failed, showing the sensitivity of this technique, it will be impossible to sell civilian casually used to play a. Thus, civilians can legally get, as well as discussed herein, refer to the kind of lightweight unmanned aircraft.
How much trouble can provoke?
Since it is a civilian, of course, did not like the military UAV loading arms (predators is linked with "Hellfire" missiles), it is up to as man-portable, close-up pictures investigation platform only.
However, if it is not the regular army, but brought the terrorists to do bad things, then, this lightweight UAV is enough to stir up great trouble.
Take a four-axis models of domestic UAV Case Analysis: The aircraft weight 4.4 kg, maximum takeoff weight of about 11 kilograms, effective endurance time of about 15 minutes (take-off weight of 9 kg), the maximum altitude of 500 meters by remote control 100 to 150 meters (ie the user can manipulate the farthest UAV 150 meters away).
Such parameters as military purposes is not it has demonstrated three important skills: the ability to carry a certain payload, the load can be delivered to a certain distance, but also allows the user some degree of control of the flight path . Three together, once used by terrorists is very frightening.
Assume that a terrorist legally purchased the unmanned aircraft, and intends to engage in public together Qunsiqunshang terrorist attack, how can he do it?
5 kg load, enough to carry a large explosive device. A reference data for: US military active duty M26A2 hand grenade, but the whole weight of 454g, that is, the unmanned aircraft to bring seventy-eight grenades is not the problem. Even if terrorists do not use explosives alternatives, its power can not be underestimated: we can imagine, a 5-kilogram large firecracker exploded around you, what will be sour feeling cool? Even even the big fireworks are engaged in less than 5 kg instead of gasoline, enough to cause a large fireball with a diameter of a few meters of the ...... foreign countries have experimented with unmanned aerial vehicles delivering food, pizza is said to be accurate to the open-air dining table on, prove that this idea is not a fantasy.
In terms of detonation, has a very mature technology, many of the terrorist attacks in the use of mobile phones to remotely UAV is not difficult to manipulate, control instructions fumble able to learn a few days, the two things did How high technical threshold.
Thus, the terrorists have to do is to choose a densely populated public places then drones and "load" to a nearby Tibetan hundred meters away where less people in the backpack, and then manipulated with UAV Rendui then rushed explosives detonated, causing not to mention the cost of this technology is not high, two, three terrorists manipulate each drone is not difficult to achieve - several more loud rumbling after that, the crowd may also be due to panic and stampede, as the consequences could not imagine.
The terrorists but they can fling the remote control, car disappear, their risk of crime than Kunming Railway Station violent terrorist attacks case as little too much.
UAV some foreign companies are already considering drones and GPS technology together, as long as the coordinate system and the city map Enter destination, the UAV can fly automatically, completely without remote control, a "do not control after take-off "type. If this technology is to wait until the explosion sounded, the terrorists had fled a few kilometers away, you will want to be more difficult to track down the murderer.
Hard to prevent?
So, for this possible terrorist attacks, and whether the judiciary prepared to force it?
The UAV "Chuang Palace" event, gives a clear answer: the existing preventive measures can not be effective against this new type of risk of terrorist attacks.
As we all know, is a no-fly zone over the White House, the Secret Service after 9.11 is strengthened security, even rumors that the man anti-aircraft missiles deployed near the White House, specifically those who attempt to shoot down hijacked planes crashed into the White House terrorist. However, whether or SAM air defense radar, the target design are real airplane, fuselage length of at least a few meters above the four-axis aircraft such "little" but nothing truly become "anti-aircraft guns to fight mosquitoes" .
These UAVs not only small size, low noise, not easy to find, its ability to maneuver at low altitude is also very strong, it is easy to escape the eyes and alert personnel into the area. If the number of terrorists using UAVs formation flight, carrying a camera in real time to detect and return the screen to avoid the guard personnel, easier remote control unmanned aircraft with several other dangerous goods a smooth penetration. Even was discovered, its volume is small, and there is a certain degree of mobility, to alert staff firearms shooting accuracy is a big test.
Thus, the Secret Service should be very glad that this fall on the White House lawn is not just a malicious drones, and the president was not present. But there are not so lucky next time, I am afraid it is difficult to say slightly.
Discussed above, or in the White House this heavily guarded place. If it is the station, markets, gas stations and other basic no air defense alert of the occasion, the hands of terrorists such as unmanned aerial vehicles will be unhindered, called a security nightmare.
How to deal with?
Currently, countries in the world for small unmanned aircraft have not made too many civilian administrative provisions, on the one hand because it is a new thing, the other is for countries to its dangers underestimated. And after this UAV "Chuang Palace" event, I believe that lawmakers will begin to focus on this issue.
One idea is to find measures to deal with technically small unmanned aircraft attacks, but the effect is probably not significant. Even as we develop a UAV capable of interfering with or blocking flying device, it is impossible in each crowded public places are mounted on a table.
Another idea is to buy a large amount of load of UAV use to regulate, at least to do real-name registration system, after the terrorist attacks but also can track down clues. Of course, the UAV is almost one hundred percent of users are good citizens, these measures will certainly give them the inconvenience, but public safety point of view, it seems that there is no better way.
Fortunately, so far, no cases of the use of small unmanned aerial vehicle blew the terrorist attacks occurred. However, this threat is real, precautions do countermeasures, is advisable.
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