The Defense World page said that with this upgrade package alone, the F-15SEs are enough to make the latest version of the Su-30SM1 inferior and slightly better than Russia’s most powerful 4++ generation fighter today. Su-35. American F-15 fighter. According to this source, the Su-30SM1 variant has been focused on modernizing the avionics system as well as adding modern weapons to help it have the same combat power as the Su-35S. So how is the strength of the Su-30SM1 when compared to an opponent from across the ocean that is the US-made F-15SE because both are in the line of heavyweight air superiority fighters with 2 seats. ? The US newspaper puts the situation that once a direct confrontation occurs between these two fighters, will the bigger victory belong to the Russian fighter or the American fighter? First, the strength of these two heavy fighters and always decisive is long-range air combat. While the Su-30SM1 almost retains the hardware components such as the passive phased array radar BARS N001M, with only software upgrades and a faster processor, on the F-15SE is the AN/APG-82 radar belonging to the F-15SE. Active scanning mode (AESA) has greater accuracy, long range and reliability. The biggest advantage of active phased array radar is its ability to jump frequencies very quickly in a very short time, making it impossible for the enemy to take appropriate electronic countermeasures. The radar reflection area of ​​the F-15SE is very small because it is covered with stealth paint and puts all the weapons in the compartment, making it close to the 5th generation fighter. As for the Su-30SM, it has no improvement. No progress in this area, the RCS is too large with the addition of a pair of nose wings, making it possible for it to be detected in advance by the F-15SE from a great distance and launched a missile to destroy. The Su-30SM1 uses an AL-31FN turbojet engine with a thrust of 12,500 kgs each, while the Silent Eagle is two F110 engines providing a thrust of 13,150 kgs. The maximum speed of the Russian fighter is Mach 2, while in the F-15SE this figure is Mach 2.5+. Russian fighters still can only carry 8 tons of weapons, much inferior to the F-15SE, if taking advantage of the external mount, the maximum capacity of the US fighter is up to 10.4 tons. Part of the above advantage lies in the higher durability of the US fighter’s fuselage, which is also reflected in the F-15’s critical flight hours of 8,000 hours, while the Su-30 is still only 3,000 hours. The only way that can make the Su-30SM1 gain an advantage over the F-15SE is to pull it into a short-range air battle, at which point the 2-way thrust vector control engine and the nose help the Su-30SM1 take the position. better mind. But Russia also needs to watch out for short-range air-to-air missiles with a “lock on target after launch” mode of US fighters because this weapon will make the advantage of mobility disappear.

Pilot Wang Zunxi (a fairly well-known PLAAF officer) in an interview with China Central Television (CCTV 7) gave a very remarkable point of view. According to the veteran pilot, the multi-purpose fighter J-16 manufactured in Shenyang Aircraft Corporation and is being massively employed for PLAAF combat units of generation 4 ++. “J-16 fighter jets (including the J-16D electronic warfare version) have surpassed Russia’s Su-30 series heavy multi-role fighters in almost all tactical specifications. “. “The superiority shown in both avionics and electrodynamic properties, the radar reflection area reduction coefficient (RCS), the J-16 retains only the aerodynamic layout of the airframe”, pilot Vuong said clearly. Faced with the above situation, the Russian press stated that in order to seek export contracts or bring high morale and psychological state to the soldiers, the weapons manufacturers used very sophisticated promotional tools and are not always objective. Russian military experts rebuttal when emphasizing that the Chinese pilot is comparing the technical specifications of the electronic equipment on the Su-30MKK and Su-30MK2 fighters that are somewhat out of date. These fighters were supplied to the PLAAF 20 years ago, and they are actually significantly inferior to the J-16 when facing exercises (both for surface attack and long-range interception missions). ). The reason is that China’s Su-30 integrates the N001VE passive phase array radar (PESA), which ensures the realization of “truncated” synthetic aperture and “truncation” (SAR) mode with low resolution. , only allows the detection and classification of targets with large RCS parameters. In addition, the capacity and anti-interference ability of the N001VE radar is quite low, it can only catch the 1m2 RCS aerial target, 75 – 80 km away in case the enemy does not use electronic countermeasures. In fact, the J-16’s high energy and anti-interference active phase array (AESA) radar has a target capture range with 1 m2 RCS from 130 to 150 km, and high anti-interference ability, range is only slightly reduced in a highly noisy environment. This is due to the presence in the electronic architecture of the advanced AESA radar, which consists of more than 1,500 transceiver modules, each equipped with an individual arsenide / gallium nitride microwave transistor. Moreover, this type of radar is also capable of operating in synthetic aperture (SAR), reverse synthesized aperture (ISAR) and tracking ground targets moving in real time. Although the equipment for the J-16 is very advanced, the Russian side thinks that it is necessary to compare the J-16 with more modern modifications, for example the Su-30SM2 variant is about to enter service. Although the N035 Irbis radar that will equip the Su-30SM2 of the PESA class may be significantly inferior to the J-16’s AESA radar in terms of interference resistance, the capacity is higher (providing target acquisition range. with 1 m2 RCS at a distance of 250 – 270 km). With the N035 Irbis radar, the Su-30SM2 will have the ability to “foresee and shoot before” the J-16 in a direct confrontation situation, especially when Russia is still completing the long-range air-to-air missile “product. 180 ”. But it must be noted that the Su-30SM2 is still on paper, while the J-16 has been on duty for many years and there is no guarantee that the Russian fighter really possesses outstanding features. as they still publish.

Vietnam used to pay off a large number of MiG-21Bis, this is the last version of the famous light fighter line MiG-21 produced by the Soviet Union. The combat capacity of the MiG-21Bis is comparable to that of the US F-16A / B light fighter. The birth of the MiG-21Bis was conceived by the Soviet Union in the late 1960s. In order to continue to improve the performance of the MiG-21 and Su-15 fighters, in winter 1971, the Soviet government issued a resolution of love. bridge The MKB Soyuz engine design department in Ufa built a new turbojet R-25-300 engine with a takeoff thrust of 7,100 kg, while in low flight with a sound speed of 9,900 kg. On the basis of the new engine, the MiG-21 fighter upgrade project officially began, this version was designated as MiG-21Bis. The production of the MiG-21Bis was deployed in that same year (1971) at the factory in Gorkiy city. In addition to the TRDF turbojet engine for the MiG-21Bis, the fuel system has been perfected, the reserve points found (mainly thanks to the auxiliary oil tank) have allowed for increased capacity. fuel system volume by nearly 239 liters, thus compensating for the long range loss due to increased fuel consumption. Recognizing the efforts of the MKB Soyuz engine manufacturers, they completed the mission. The R25-300 generates thrust in the emergency mode of 7,100 KG, while in accelerated first-grade 6,850 KG. Keeping the same size as the previous engine model, the engine’s dry weight increased slightly and did not exceed 1,215kg. In fact, the thrust capacity of the R25-300 engine has exceeded the initial requirements, thus helping the aircraft to have better maneuverability. Unfortunately, the MiG-21Bis’s fuselage has made full use of the space, including the exhaustion of the internal compartments, otherwise the power of the MiG-21Bis would be much stronger. The radar equipped for the MiG-21Bis, although not large in size, also significantly expanded the aircraft’s ability to capture the target. The aircraft is equipped with the RP-21 tadar; optical viewfinder ASP-PFD-21; The PNK Polyot-OI navigation-pilot combination helped the MiG-21Bis become an extremely powerful opponent in the air at that time. The MiG-21Bis retains the Lazur anti-interference communication channel, which ensures communication with the Vozdukh-1 ground-based automated command system. Pilots are equipped with a KM-1 or KM-1M parachute ejection seat, the PVD-18 air pressure receiver. With this equipment, the pilot can safely escape in case the aircraft is shot on fire. The maneuverability of the aircraft is close to that of the fourth generation fighter F-15, F-16 and Mirage 2000. The radar scattering area (RCS) of this aircraft is close to that of the aircraft. F-16 fighter aircraft. Compared with previous variants of MiG-21, MiG-21Bis fighter has improved wings, aircraft equipment is improved, significantly increasing the list of weapons. The MiG-21Bis’s armament load is about 1.3 tons, allowing up to four K-13M, RS-2US, R-3S, R-3R, R-60 and R- heat-range air-to-air missiles. 60M; or can carry 57 and 240mm rockets or 500kg free-fall bombs. Four mounting brackets can allow carrying “gun pods”, aviation cameras, and electronic radio reconnaissance facilities. In the fuselage is arranged a 23mm GSh-23L aviation gun with 200 rounds of ammunition. In 1972 the aerospace plant in the city of Gorkiy built the first 35 MiG-21bis interceptors, and in that same year the aircraft entered service. From 1972 to 1985, the Soviet Union built 2,013 MiG-21Bis with three main configurations: product “75” for the Air Force of the Soviet Air Defense Army (PVO); “75A” for socialist countries and “75B” for capitalist and developing countries. MiG-21Bis fighter entered Vietnam People’s Air Force in 1979. It could be the MiG-21bBs 75A version for the socialist bloc. Currently, all MiG-21Bis have been disqualified due to their expiry date.

But this is not the case. “Although we cannot speak on behalf of CCMI, and did not officially announce a specific date for the launch of this service, Synchronoss is still continuing to make preparations and looking forward to helping bring RCS-based messaging services to American users.” Synchronoss recently responded to Light. Said when reading the question. Verizon’s answer is more blunt: “The owners of CCMI decided to terminate the joint venture. However, we owners are still committed to enhancing the user’s messaging service experience, including increasing the availability of RCS.” The operator in a statement Write. This development is indeed not surprising. GlobalData analyst Lynnette Luna told Light Reading: “The RCS market has been developing very slowly in the past ten years.” Lynnette Luna wrote a report on the US RCS market in June 2020 and has not been updated since. RCS first appeared more than ten years ago, when GSMA marketed the technology under the Joyn brand. They hope that operators such as Vodafone and Verizon can use RCS to create a variety of interoperable multimedia features, similar to Facebook’s WhatsApp. Although the technology has gained a certain market appeal in certain regions such as Japan, it is still unpopular in the US market. In response to Light Reading’s question, T-Mobile said: “We are committed to providing RCS interoperability and are working with other vendors to achieve this goal. T-Mobile users using Android devices can currently enjoy RCS through our network. Messaging services can also communicate with many other users around the world through RCS messaging through interoperability with Google.” In fact, since the establishment of CCMI in 2019, T-Mobile may be the only U.S. operator to speak out in terms of RCS. The operator first launched RCS in 2015 with supplier Mavenir. In 2020, T-Mobile announced that it had reached an agreement with Google to provide RCS services to its Metro by T-Mobile prepaid subscribers. Then, in March 2021, T-Mobile said that it had reached an agreement with Google that Google Messages will become the default messaging service application on all its Android devices. According to people familiar with the matter, T-Mobile’s move is aimed at eliminating mobile-specific messaging service clients, such as Samsung Message. The Google Messages application will still be connected to T-Mobile’s RCS service operated by Mavenir. Considering that T-Mobile US will account for 40% of Mavenir’s revenue in 2020, this is worth noting. “The recently announced cooperation between T-Mobile and Google is good news for the adoption of RCS and its integration as the next-generation mobile messaging service standard. By adding support for Android Message, T-Mobile does not need to rely on The updated roadmap of smartphone manufacturers has expanded the range of users and added more RCS users to its network. This is also good news for Mavenir to expand its RCS development footprint in the United States, because the three major mobile network operators are in their networks Mavenir’s RCS technology is used in the “Mavenir” said the person in charge of Mavenir’s RCS in a statement. The person in charge continued: “The major mobile network operators in the United States have completed or are completing RCS interconnection with each other and interconnection with other RCS users around the world. It is expected that RCS services from different mobile operators will be available in the future. The announcement shows that RCS has become a reality and will continue to develop.” GlobalData analyst Lynnette Luna explained that Google continues to promote the development of RCS in the United States and elsewhere in the hope that it can profit from B2C advertising. Considering the performance of such services in Japan and other countries, this is not surprising. According to Synchronoss data, Japanese consumers have an open rate of 85% of RCS messages and a click rate of 60%-which is much higher than the 0.001% click rate of users on mobile banner ads. Lynnette Luna said: “RCS is really important to Google.” She said that although the development of RCS services in the United States and other places has suffered from “the chicken or the egg problem”-that is, the operator does not support this. The service is because the customer does not use the service, and vice versa. Of course, another major development obstacle facing RCS is: iPhone maker Apple does not support RCS services, and Apple occupies nearly half of the US smartphone market. Lynnette Luna said, “This has always been the Achilles heel of RCS.” But she also said that this service may be promoted by 5G, which requires operators to deploy IMS technology, which makes RCS interoperability easier to achieve. However, Lynnette Luna does not have much hope for U.S. operators such as T-Mobile, Verizon and AT&T to vigorously promote the development of RCS. These operators are currently actively expanding their 5G networks. Indeed, AT&T did not even respond to Light Reading’s questions about the development of its RCS. C114 Communication Network Ace