First, it is necessary to consider the operating principle of Shkval. When an object moves in the water, it will create bubbles around it due to its motion, which is the phenomenon of cavitation in nature. The super-cavity is a more special case, when a large air bubble appears and covers the entire object, then the object will almost fly in the air due to the maximum elimination of friction. This is the principle applied on the VA-111 Shkval super-fast torpedo. The VA-111 Shkval was researched in the 1960s as a specialized weapon for attack submarines to fight nuclear submarines and enemy surface ships. On November 29, 1977, the VA-111 Shkval super-cavity torpedo was officially accepted into service in the combat component of the Soviet Navy. Shkval torpedo uses a solid fuel engine, the head is fitted with a special cavity-forming device. It is a thick elliptical piece of metal that is sharpened with an angle of inclination to the longitudinal axis, with a circular cross-section to create an angle of elevation. In fact, a foam generator is not enough, so the torpedo head adds foaming air ducts, the bubbles are generated by a gas booster. This allows to increase the volume of air bubbles and create bubbles that cover the entire torpedo body. The Shkval super-cavity torpedo has a speed of 93 km/h out of the launch tube and up to over 360 km/h when the engine is at full capacity, twice as fast as conventional torpedoes. The warhead of the VA-111 has a weight of 210 kg, enough to break a 10,000-ton destroyer in two with a single shot. However, it should be added that besides the advantages, the VA-111 also has deadly disadvantages, making its use in combat must be carefully considered. Firstly, Shkval’s range is too short, reaching a maximum of only 6,858 m, forcing the submarine to be close to the enemy to be able to strike. This is extremely dangerous because modern warships all have advanced sonar navigation systems and extremely powerful anti-submarine weapons. Second, it is the super-cavity technology that creates superior speed that makes the torpedo unable to establish two-way communication, when the radio signal is blocked from the outside, unable to penetrate the air bubbles. The torpedo relies on estimating target coordinates prior to launch, and its maneuverability is also extremely poor, as a sharp turn would break the supercavity bubble. Third, the secrecy of the Shkval torpedo is completely absent, because it creates extremely loud noises and forms a line of bubbles floating on the water that is easy to observe. Finally, the unit price of the Shkval torpedo is said to be significantly higher than the older generation types, while the advantages are not yet outstanding. For the above reasons, guided torpedoes such as TEST-71 or Type 53-65 combined with Kalibr cruise missiles will give modern submarines a higher combat capability, especially without tethering. it faces dangerous situations like when carrying the VA-111 Shkval. Currently, Russia announced that it has initially successfully tested the Shkval 2.0 variant with a longer range and controllability. If the above weapon is soon completed, it will really be able to replace the products of the old generation.

Customize sharpness parameters on smart TVs. Photo: Lifewire However, the reality is not so, on most smart TVs today, the Sharpness feature only has the effect of “edge enhancement” (simply speaking, expanding the border), and this can reduce some small details on the picture. That’s why you should reduce the Sharpness parameter to less than 20% or less (possibly 0). On the left is the original image, and on the right is the Sharpness enhanced image. It’s not hard to notice that the image on the right has some extra halos around the subjects, which is what the Sharpness feature brings. Normal image and Sharpness boosted image. Photo: CNET This basically makes objects easier to see, but they also make other areas grainy. In fact, the image that has not been sharpened will be softer, helping you to see small textures on the walls, facial pores, etc. Note, if you are using a 4K TV, users will not be able to receive it. See the difference when increasing and decreasing the Sharpness parameter. In short, to get the best visual experience when watching TV, the easiest way is to switch to Movie mode, or you can tweak the Sharpness parameter to 0-20%.

The all-new Toyota Land Cruiser line-up was caught showing that the launch date is not far off The images of the commercial version, about to be sold to the market of the all-new Toyota Land Cruiser suddenly appeared on social networks. Notably, the image includes the entire exterior without being concealed as well as a few interior details of the new Land Cruiser. From these images, it is easy to see that the front end has been completely changed, with a large grille, more powerful design. However, the headlights and fog lights are small. The rest of the new Land Cruiser exterior has a rather familiar design, but is tweaked to a sharper edge, giving the car a strong overall look. In some details such as wheel arches, rearview mirrors … will carry the lines of the Lexus GX / Land Cruiser Prado. Screen layout, buttons function center area on Toyota Land Cruiser completely new Inside the interior, the dashboard stands out with the appearance of a larger digital display. However, the car is still equipped with a mechanical speedometer and revs. The steering wheel is also redesigned square, luxurious and more advanced. Prominent in the center of the dashboard is a large entertainment screen, like the Lexus LX570. Buttons to adjust the air conditioning system, seat heating and cooling … are moved to the bottom of the air-conditioning door. The steering mode switch buttons are arranged more convenient for the driver’s control In addition, from the spreading images, next to the gear lever appears the drive mode selector and function buttons for off-road driving. This is considered the most important part, helping the Toyota Land Cruiser be trusted by many people to use in harsh terrain. The all-new Toyota Land Cruiser appearance is more square and robust Toyota has not revealed any information about the all-new Land Cruiser, but according to many rumors, the car will be equipped with a 3.5-liter twin-turbocharged V6 as well as a hybrid version. There will even be a diesel version of the 3.3-liter V6 diesel engine. The all-new Toyota Land Cruiser is expected to hit the global market mid-year.