As the first aircraft carrier in China, the Liaoning has attracted extensive attention from the international community since the day it entered service, but there is one thing that you may not know or even be very puzzled. This is why many carrier-based aircraft on the Liaoning ship are painted with signs of nuclear bomb danger. Are these signs warning other carrier-based aircraft of radiation? Today we will talk about this topic.
First of all, the yellow painting on J-15 carrier aircraft and Yun -20 large transport aircraft on Liaoning ship is actually a technical verification machine. This kind of fighter plane is generally painted with the sign of nuclear radiation warning.
Many people think that this carrier-based aircraft has nuclear radiation when they see this sign. Some experts even say that as long as there is a nuclear radiation sign, everything is harmful to nuclear radiation. Is that really the case? In fact, all these news are false.
First of all, this sign is not a sign of nuclear radiation.
The warning sign of nuclear radiation is yellow background+three black blades, which looks like the propeller of an old fighter, and is completely different from that on the fuselage of J -00 15 or Yun -20. Moreover, the carrier-based aircraft has nuclear radiation during the test stage, but there is no nuclear radiation after the test? If China's military industry can reach this level, it is no problem to build a nuclear-powered aircraft carrier or a nuclear-powered car directly. This is obviously all false news.
So what is the carrier-based aircraft symbol on the Liaoning ship?
This seemingly nuclear radiation sign is actually called the optical sign of fuselage deformation monitoring. This pattern is generally configured by the type test part of carrier-based aircraft. A circle is divided into four parts, and black and yellow represent vertical and horizontal respectively. This design is not used to disguise nuclear radiation to scare the enemy. However, during the high-speed flight of carrier-based aircraft, the pattern of this arrangement is very conspicuous, and the high-speed cameras of other fighters can directly aim at this sign for focused shooting, so as to calibrate the observation angle of the fuselage and facilitate better inspection of whether the fuselage is deformed. In addition, the fuselage structure and materials of carrier-based aircraft can also observe the strength well.
Nuclear radiation signs are generally not printed on fighter planes. After all, according to the relevant regulations of the international community, all items or places that may cause nuclear pollution need to be printed or hung with nuclear radiation signs. Among the items mentioned here, we are familiar with nuclear warheads, X-ray machines and nuclear reactors. None of these places can be exposed to the human body for a long time. And the signs of nuclear radiation are not all yellow. Signs like nuclear radiation are actually white, which is also the lowest risk in nuclear radiation, while the highest risk does not have any patterns, but fissile materials are written directly on the signs.
For example, the special symbols on carrier-based aircraft are actually not patents of the Air Force. For example, in the collision test stage of automobile enterprises, more than a dozen such special symbols will be sprayed on the car body to help digital cameras track and record.
Optical signs that monitor the deformation of the fuselage are a bit like motion capture in Hollywood special effects movies. Actors are covered with signs to improve the capture efficiency of cameras and special effects software, but the difference between them is that the signs used for motion capture are cross-shaped, while the carrier aircraft uses yellow and black patterns.
In fact, the military used a cross at first, but because the fighter plane flew too fast, the high-speed camera could not focus accurately, so it used an improved one.
This kind of optical signal for monitoring fuselage deformation is very important for the test stage. For example, when India was testing the newly bought Su -30MKI fighter, because it was not configured, it did not grasp the original data of the fighter in the modification stage, which led to problems in the flight of the fighter and crashed.
For us, this model is hardly seen in life. After all, enterprise testing is confidential, and things like car testing are not carried out in the crowd. It is not a shame not to know. However, after reading this article, don't confuse nuclear radiation with optical signs for monitoring fuselage deformation. After all, it is responsible to spread false news.