"North Korean drone" is actually a toy model

Recently, South Koreaâ€™s ruling and opposition sides have fallen into "North Korea troubles." On March 24 and 31, the South Korean military discovered two drones in the Paju area near the 38th parallel line and the Baiji Island near the disputed waters of Korea and South Korea. The South Korean military speculated from common sense that the two drones were from North Korea, but there were no signs on the plane that could reflect North Korea. Instead, they discovered Japanese Canon cameras and some Chinese-made parts.

What the Korean side can't stand is that the drones that crashed in Paju on the 24th took 193 photos of the northern part of Gyeonggi Province and the Seoul area, and even photographed the South Korean presidential palace, the Blue House, despite the blurry picture. In the direction of Baiji Island, the Korean army also discovered the North Korean drone that tried to break in, and used the "Vulcan" six-barrel anti-aircraft gun to launch more than 300 shells, but failed to hit because of the near range... now The South Korean side is considering how to strengthen the air defense protection of the presidential palace.

Judging from the photos of South Korea, the so-called "North Korean drone" is actually only a large-scale oil-moving model. In the eyes of some senior model enthusiasts, this is still two very rough works. The body that fell into Baiji Island is less than 2 meters long and has a wingspan of about 2 meters. The highest technical content on the plane is the Japanese Canon camera installed in the middle of the fuselage. From the appearance of the engine, it should be a two-stroke methanol engine dedicated to the aircraft model aircraft, driving a wooden two-bladed propeller, produced by a company in Shenzhen, and is also a well-known brand in the Chinese aircraft model industry.

The so-called "North Korean drone" is so unbearable.

For the two rough models, the South Korean side is obviously too nervous. South Korea's "Central Daily News" said that in order to avoid radar or visual observation, the drone fuselage is very small, and painted in sky blue to camouflage; the fuselage shell is made of a special material - polycarbonate, with the US Army F The cockpit cover of the -22 stealth fighter is the same material.

This can't help but be ridiculous. The so-called "polycarbonate", perhaps "PC plastic" is more approachable. That's right, this drone fuselage is the same material as the PC bottle and PC crisper that we are in daily contact with. It's nothing unusual. By the way, don't put hot water in PC bottles, don't put food in PC fresh-keeping box, because polycarbonate will release harmful phenolic methane (BPA) when it is hot.

The cockpit cover of the F-22 is also made of polycarbonate, but its thickness is up to 20 mm. It is light-transmissive with a special process and its strength reaches 117-196 MPa, which is resistant to bird impact. The key stealth performance is to rely on the semiconductor metal oxide film that can reflect the radar wave, avoiding the cavity effect of the cabin and enhancing the radar reflection.

In addition, there are reports in the South Korean media that the data transmission and reception antennas are installed on the drone, and the photos can be returned in real time. However, after the South Korean military investigation, it was denied that the transmitting and receiving antennas on the drones operated at a frequency of 0.9 GHz. They were not used to transmit photos, but were used to control signals of drones and receiving GPS satellites.

Therefore, the two "North Korean drones" are too primitive, that is, the camera, GPS chip and automatic control circuit board are installed on the oil-moving model. After setting the flight line in advance, after manual remote control take-off, transfer to GPS autonomous navigation, infiltrate into the sky above South Korea, return and then pull out the camera's memory card to export photos. From the photo point of view, the camera should be directly mounted on the fuselage, there is no stable gimbal, the quality of the shooting is definitely not good.

The three key devices on the "North Korean drone", the Japanese Canon camera, the engine produced by a company in Shenzhen, the GPS signal receiving antenna.

The size of the aircraft model aircraft is small, the general air defense warning radar, the naked eye to find it is indeed very difficult, the South Korean military failed to find and intercept the intrusion of the aircraft model aircraft is normal, which is a problem for any national army. However, the RC airplane flies to a low reliability and is greatly affected by the airflow in the air, which does not drop two. Moreover, the weight of the aircraft model aircraft is very limited. The South Korean military estimates that its load is only 1 kilogram. The damage caused by 1 kilogram of explosives is minimal, not to mention the ability to target and attack specific targets.

The South Korean military is worried that if the model aircraft is not loaded with explosives, but chemical weapons, the release of 1 kilogram of chemical weapons near Qingwatai can seriously threaten the safety of South Korean President Park Geun-hye. Therefore, the South Korean military is only beginning to improve the air defense protection capability of the Qingwatai, rather than comprehensively preventing the penetration of the aircraft model aircraft into the airspace.

The biggest problem for the South Korean government now is that there are no objects on the two RC airplanes that can prove North Korea. The presidential palace of the National Central Committee was "infringed", but it could not be beaten. Even the "strong protest" of the Korean artichoke could not be done...

The Korean Army Vulcan anti-aircraft guns on Baiji Island had fired more than 300 shells but failed to hit the North Korean drone.

What bothers me is the value of North Koreaâ€™s use of a model airplane to take some blurred photos.

This may be because North Korea does not have a reconnaissance satellite. Although many commercial satellite photos can be bought outside, it is expensive, and the shy North Korea does not want to use precious foreign exchange reserves. Moreover, satellite photos are lagging behind in terms of timeliness. Now, during the US-South Korea military exercise, it is necessary to take a plane to obtain instant photos of the US and South Korean military movements. Although North Korea also has a truly professional military unmanned reconnaissance plane, it has a large size and obvious features. If it is discovered and shot down by the Korean army, it will definitely lose its diplomatic position... So, I donâ€™t know which smart North Korean soldier came up with a model airplane. The camera was used for infiltration shooting, and the quality of the photos was almost the same, but it was still possible to find large-scale military movements.

North Korea has been dissatisfied with the United States and South Korea for joint military exercises. During the US-South Korea military exercise in March 2010, North Korea created the Cheonan incident. During the US-South Korea military exercise in March this year, North Korea continued to test short-range ballistic missiles, long-range rockets and ordinary artillery demonstrations, which made Korean society uneasy. Therefore, North Korea is now infiltrating into South Korean airspace with a model airplane, perhaps to tell the Korean side: it is to make you play.

Sewage Suction Truck

Cesspit emptier, Pollution Truck, Suction sewage truck, Vacuum suction Truck, Sewer Suction Truck, is collecting, cleaning up pollution car transport, sewage sludge, and avoid the secondary pollution of sanitation vehicles, new car pollution can be self-priming since the row, working speed, large capacity, transportation is convenient, applicable to collect feces, mud, oil and other liquid material transport. CLW GROUP TRUCK Sewage Suction Truck, Pollution car using domestic technology led to the pollution of vacuum pump, the suction, suction cjay, especially suitable for the drain suction of warp, the loading and unloading, especially can suck a drain mud, mud, stones, bricks and other large objects.
Introduction to the
CLW GROUP TRUCK Sewage Suction Truck,Dongfeng pollution Truck, FAW sewage truck, JAC Cesspit emptier, HOWO heavy vacuum truck, sewage truck, Shacman steam soak, JMC pollution, ISUZU Sewage Suction Truck.
CLW GROUP TRUCK Dongfeng Sewage pollution classification: Fred card pollution truck, do pollution cars, three wood pollution cars, 140 pollution cars, 145 Sewage Suction Truck, 153 Sewage Suction Truck,Dongfeng dolika Sewage Suction Truck, The 1208 Sewage Suction Truck, sharp fluid Sewage Suction Truck.
CLW GROUP TRUCK Sewage truck function
Sewage Suction Truck dedicated by taking power device, a transmission axis, a vacuum sewage pump, pressure tanks, hydraulic parts, pipe network system, vacuum pressure gauge, dung window, hand washing device and so on, the accessory configuration high-power vacuum sewage pump and hydraulic system, a tank head die casting molding, tanks can be opened after, double top dump. Dumping sewage tank can be directly through the rear cover, high vacuum (greater than the dung sucking suction), large tonnage, high efficiency and use a wider range of features.
Pollution and dung sucking with the same principle, but pollution car with dung sucking again have different purposes. The difference is that pollution car tanks for circular jar, structure more closely, can provide greater suction higher pressure resistance, can be used to collect clean transport sewage and sludge.
The working principle of CLW GROUP TRUCK Cesspit emptier
As dung hose always immersed in a liquid surface absorption, dung after the air tank by suction, because its are not added and more and more thin, the tank pressure below the atmospheric pressure, the liquid manure is used at atmospheric pressure, the suction droppings hose into the tank. Close to the tank bottom, or the siphon tank, air is constantly into dung was compression because of its no way out, and the tank pressure is higher than the atmospheric pressure, dung liquid under the action of compressed air, namely, the siphon, suck fecal discharge hose outside the tank.
Sewage Suction Truck has high pump efficiency, imbibition, since the row and straight irrigation, etc. Smoke pot filled with dung time: 5 min or less, suction: 8 m or higher. According to have a long service life, the work speed, easy operation, convenient transportation, etc.
The main purpose of cleaning truck absorption
Sewage Suction Truck is mainly used for cleaning the city sewer, pipe sediment, corner dredge mud ditch, also can be used for industrial drainage pipe cleaning, wall, etc., and can double as water, water and washed the road use, can be used for fire emergency.
choose
1, pay attention to quality, vacuum tightness, such problems as poor material likely to cause deformation of tank.
2, the choice of vacuum package, bearing capacity and temperature difference of perception.
3, the selection of tank cover, according to the local work environment, temperature and so on.
4, according to the national development and reform commission on enforcing the exhaust emission regulations, 08 year July 1, before the second parameter data delete all vehicles.

Sewage Suction Truck,Sewage Cleaner Truck,Vacuum Sewage Suction Truck,Sewage Suction Tanker Truck

CLW GROUP TRUCK , https://www.clwgrouptruck.net