Recently, the news from Pakistan said China will "emergency" provision of 50 aircraft to Pakistan JF-17 combat aircraft type, these aircraft will be raised to the standard batch of JF-17BLOCK2, the combat capability of JF-17BLOCK1 compared with the existing greater increase. JF-17BLOCK2将是PAF现役JF-17的标准配备。 JF-17BLOCK2 will be active PAF JF-17's standard equipment.
The information from the relevant, JF-17BLOCK2 will continue to use our on-board avionics systems and weapons, and continue to improve the depth and breadth of the operational performance of the aircraft, and the PAF is also introduced the formation of ZDK-03 early warning aircraft and more stringent complete combat system to improve the autonomy of PAF combat capability.
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In the JF-17BLOCK2 the message, the outside world for the first time that the SD-10B active radar guided air to air missiles there, the Palestinian side that the SD-10B's performance can be introduced with AIM-120 air to air missiles, compared, and in weight than the existing The SD-10 to lighter, open air show information from the point of view, SD-10 air to air missiles of the maximum range of over 70 km, 50 km effective range, and the AIM-120A is similar, the latter a maximum range of more than 80 km, 55 km effective range, but the SD-10 should be greater than the size and weight of the AIM-120A, so that the JF-17 light fighter, the mount the SD-10, on the flight performance of larger, in particular, mounted on the outer wing pylons, you need to reach launchers to adjust the focus of the new century, the introduction of F-16C/D-BLOCK52 PAF fighter aircraft from the United States, its top with the AIM-120C5, 90 of the last century Considering the U.S. Navy's AIM-54 "Phoenix" remote retired air to air missiles, and its follow-up of advanced air to air missile-AAAM program was terminated, the U.S. Navy long-range air strike capability targets dropped significantly, as a quick supplement to the U.S. Navy asked AIM-120 can intercept distance of more than 40 miles (60 kilometers) of the aerial targets, this is the AIM-120C5, compared with the prototype missile, the missile increased the weight of the missile engines, increased from 45 kg to 50 kg, while improving the grain's surface, so that more regular and full combustion, increasing the time and the specific impulse fuel, so that the AIM-120C5 missile interceptor prototype increases range from about 10%, while improving the guidance head of the signal / data processing capability, increasing the number of warhead fragments, improve on the three generations of fighter jets destroy twin capability, the improved AIM-120C5 and AIM-120C7 continue to increase the rocket engine, its effective range has been further increase, from Pakistan's point of view of information sources the performance of SD-10B may be in line toward the AIM-120C5, on the basis of improving the range and reduce the volume and weight, to improve the adaptability of loading, I think it is very important is the possibility of SD-10B is also being developed taking into account China's demand for arms stealth fighter, stealth fighters to reduce the RCS, airborne weapons are generally placed above the bomb bay, in order to narrow the bomb bay mounted weapons as much as possible inside , so it is necessary to reduce the air to air missile system, AIM-120C than the AIM-120A on the reduction of the tip, to improve the F-22's bomb bay to mount the number, SD-10B may also be the idea, with a range of improved, guided accuracy of the system must keep pace, SD-10B is said to adopt a surprisingly active / passive composite guidance system, and we are familiar with the different sources of interference when the guidance system, this active / passive composite guidance system is to use passive mode other airborne radar signal receiver, and then start using the former terminal guidance radar target data to improve detection, both work to improve the detection range of the seeker and anti-jamming ability, be pointed out that SD-10B is not planning to use The air to air missile guidance system, AIM-120 is also used to have such a plan, but the technical difficulty of this seeker great need to address the broadband active / passive antenna and radome composite guidance, data fusion, and other key technologies , so I for SD-10B is equipped with guidance systems such reservations, but it seems we can speculate from my country in the direction of the development of air to air missiles.
JF-17BLOCK2仍旧采用我国的航空电子系统。 Missile performance improvement inevitably require the performance of airborne fire control radar to increase as, for air to air missile which provides target data required for the calculation of attack area, JF-17BLOCK2 with SD-10B air missiles, which means that the machines should be equipped with airborne radar to China, because the aircraft use of a weapon, you need to reside in the task-related computer programs, or fire control computer, and these procedures are based on the missile launch envelope preparation , while the missile launch envelope is the core of national secret airborne weapons, related to the work of the missile terminal guidance radar tracking distance and angle and the maximum tracking speed, time, energy work on a missile, engine thrust and working time, definitely not will be exposed, and therefore the task of JF-17BLOCK2 can be sure the computer is basically our products, as I said before the airborne radar to the target, it will smooth the data and make forecasts, and then processed the data to the mission computer, from the posterior instructions to complete the manipulation of the aircraft, missile attack area, the calculation of radar scanning parameters clearly will involve airborne radar parameters, these parameters are also confidential, so I thus believe that the JF-17BLOCK2 still used in China's aviation electronic systems .
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. Indeed JF-17BLOL01 quite advanced avionics systems, has more than existing third-generation combat aircraft, the third-generation combat aircraft avionics with the federated system, the system is the use of associated data bus, the system is the core mission computer, the task computer responsible for the detection system to obtain information, and then submitted to a unified display and control computer display, and JF-17 avionics system to control the computer as the core arms management, the most prominent feature is a combination of two computer tasks and control functions were , which reduces the complexity of the system, simplify the structure, reducing weight, improving the overall reliability of the avionics system. but also for future upgrades to lay a solid foundation.
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JF-17BLOCK2的AESA带这个东西? In Pakistan the description of the radar for the aircraft, there is a word the reader may be surprised; "will be rotating disk with active phased array radar," in many people's impression of airborne phased array radar antenna should be fixed and why the JF-17BLOCK2 the AESA with this thing? JF-17同级的JAS-39战斗机,其配备的AESA据说也将采用旋转机构来提高雷达的扫描范围。 I thought it might be to expand the scope of the radar scan, phased array radar has a drawback, as the scanning range increases, the reduction of radar aperture projection area, resulting in lower gain antenna and beam increases, thereby reducing the radar detection distance, so need to turn the antenna to extend the scope of the radar scan, we are familiar, such as F-22 fighter AESA, etc. The reason is fixed, because the power of these fighter AESA high, big angle scanning can tolerate certain gain losses, while the light aircraft as the radar power is limited, this loss can not be ignored, and the JF-17 the same level of JAS-39 fighter, equipped with the AESA will also use rotary mechanism is said to increase the range of the radar scan.
There is also a mechanical scanning mechanism of airborne phased array radar is more familiar with the BARS passive phased array radar-PESA, the radar equipment in Indian Air Force Su-30MKI fighter jets above, some people often take the Su-30MKI China Air Force Su-30MKK comparison, BARS is a project must be mentioned, but the official website of NIIP is relatively conservative given the data; BARS electronic scanning angle is 40 degrees lower than conventional aircraft fire control radar scanning range of 60 degrees the need to further expand the machinery sector, the size of radar target detection range fighter aircraft in the 130-140 km, these data clearly BARS radar antenna, the 1-meter diameter and 5KW peak do not match, because I think the two are virtually identical The, BARS is PESA, compared with the AESA, the radar antenna is relatively simple, cost is also low, but the disadvantage is the complexity of radar feed, transmitter power need to go through circulation, the power distribution network to reach the array element, in which clearly have greater power loss, that is, even though the antenna and power BARS larger, but due to large losses, the antenna radiated energy is not high, so that when the scanning angle is large, this loss plus the antenna decline in the gain will reduce the radar detection performance, in this case, had to be supplemented by mechanical scanning mechanism, as heavy phased array antenna, the target data update rate is not too high, also causing the overall weight and radar systems increase in volume, BARS weight of more than 500 kilograms. 这也是为什么印度空军要将BARS向AESA升级的根本原因。 This is why the Indian Air Force to upgrade the BARS to the root causes of AESA.
根据中国电子进出口公司提供的资料,目前配备在JF-17BLOCK1的机载雷达是我国KLJ-7型火控雷达,其雷达天线直径在600毫米左右,下视探测距离在80公里,上视在105公里左右。 China Electronics Import and Export Corporation under the information provided with the JF-17BLOCK1 current airborne radar is a type of KLJ-7 fire control radar, the radar antenna is about 600 mm in diameter, the next, as the detection range of 80 km, the apparent about 105 km. Plane search distance of 120 km, while KLJ-7 also has a more complete ground (sea work) patterns, including high-precision synthetic aperture and ground moving target indication mode, but the indicators for the SD support effective longer range -10B is still a reluctance, particularly the goal of mechanical scanning radar update rate lower, less able to multi-target attack, while in the implementation of the open space model can not simultaneously empty model, which for the PAF at a disadvantage, it is very negative.
If the dress AESA, you can use the latter the product of a larger power aperture radar to improve detection range, but may have to raise the level of JF-17 is limited by the power supply and cooling system capacity, but rely on quick AESA electronic scanning capabilities, JF-17 can focus the radar energy is concentrated mainly on the direction of the threat or to provide a detection range of the tracking accuracy, or to achieve fast detection and tracking of multiple targets, and mode of implementation of the time when the implementation of open space empty model, particularly is its good performance for multi-target tracking to provide reliable PAF multiple target attack capability, multi-target attack in the BVR process, airborne radar speed search mode after completion of the target detection, edge tracking mode into the side of the search target tracking, multiple target tracking algorithm after treatment by objective data, and then to the mission computer for data processing. 从现代空战的经验来看,未来空战的交战时间交会越来越短,飞行员尽可能的要在一次攻击中攻击多个目标,以提高打击目标的能力。 From the experience of modern air combat, air combat of the war the next intersection is shorter and shorter time, the pilot in an attack as much as possible to attack multiple targets in order to improve the ability of targets. 这也是现代战机普遍换装AESA和主动雷达制导空空导弹的主要原因。 This is also the general facelift of modern fighter AESA and active radar guided air to air missile of the main reasons.
With the development of modern electronic warfare systems, in particular the development of radio frequency memory technology, airborne radar, if too much power, very easy to intercept and interfere with each other, even if the JF-17BLOCK2 equipped with AESA, you can use the burst and low-capture flash probability model, but still want to avoid excessive signal leakage, therefore, have a silent detection means to become a modern air combat is an important component of which is infrared search and tracking system, be pointed out that Pakistan had developed its related systems and equipment PAF Mirage -3 / 5 fighter jets above, used for air and ground target detection, and navigation can be used for night flying at low altitude, but its performance such as lower detection range, I believe that China's production of the aircraft will be equipped with airborne infrared search and tracking system-IRST, the system has replaced the Russian system has become -11 J of the Air Force's main equipment, the system has detected distance, the characteristics of strong anti-interference ability, by virtue of IRST, PAF pilot can not turn on the radar cases, still maintain a grasp on the target, thus avoiding the premature opening of the radar, exposing their position.
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PAF先后从瑞典和我国引进了SAAB-2000“平衡木”和ZDK-03预警机。 We know that the modern battlefield broad aspect, the detection system of any fighter can achieve coverage of theater, and more need for an external command guidance system provides objective support for the fighters who attacked the first step is to guide and air target detection radar network to detect After the determination of the relevant coordinates, and send fighters guided the plane to the array are favorable to launch attacks to take the initiative in aerial combat, the traditional ground-air defense command guidance system, though they have more display and control units, can lead a large number of fighters, but due to curvature of the Earth, restrictions on the lack of grasp of the low empty feeling, so PAF has introduced from Sweden and my SAAB-2000 "Balance Beam" and ZDK-03 early warning aircraft. The former side-looking radar by air to achieve the key threat to the direction of extension of alert, and the latter with a larger body and range, you can stay over a long time in key areas, to guide the implementation of early warning and control mission, the command can be under the authority of the superior direct command of combat fighters, PAF enhanced emergency response capacity, for the land strip, the limited strategic depth for Pakistan is very valuable, so it is imperative for the PAF to complete early warning aircraft and fighter jets, ground air defense command guidance systems join to form a joint network operations system, which is already equipped with a JF-17 tactical data link terminals, and ZDK-03 can join, but the view from the relevant message, JF-17 data link the present power seem more limited, less likely to LINK-4A with the United States rather, to support one-way or two-way data transfer and exchange, but the network can accommodate the small number of members of the exchange's data include only the location of the intended target intercept point, fighters themselves location and status information, and JF-17BLOCK2 will achieve early warning aircraft and SAAB-2000 interconnection network to form a more perfect system, combat system, while its chain of transmission of data and more extensive information, data throughput is also higher, more integrated and more features.
As Pakistan's national strength is limited, so PAF can not afford large-scale fleet, so its needs its own fighter aircraft to have more features for a smaller fleet size to take on more combat missions, came from the Zhuhai Air Show Look,
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JF-17BLOCK1 WMD-7 fighter aircraft equipped with optical targeting pod, the pod of about 2.7 meters, diameter of 0.39 meters, weighs 280 kilograms, is equipped with infrared imaging FLIR, CCD and laser irradiation / ranging system, weather conditions in the day and night to search for ground targets, identification and tracking, and track the target under irradiation of laser ranging and guide the laser-guided bombs and other precision guided weapons, general-purpose bombs or precision bombing of targets, from the Air Show public information point of view, WMD-7 infrared device operating in middle infrared band (3-5 microns), this small band interference infrared background radiation, water vapor through the atmosphere and the ability to detect high temperature conditions, and imaging device is also more simple and reliable, is the main national optical pod devices, infrared devices and has two CCD field of view; 4.3 * 5.8 degree wide field for the search target and 1.4 * 1.9 with a narrow field of view in tracking, target identification, work in the 1.06 micron laser irradiation is greater than 13 km away, ranging from greater than 18 km, it can be speculated that infrared devices can detect more than 20 kilometers away, from these data, domestic WMD-7 pod roughly the skill level of the first generation of Israel Lite Ning pod performance rather than the latest Lite Ning or the United States Sniper XR pod that there are still some gaps, including infrared detection range, the laser device the role of distance, while the laser wavelength is 1.05 microns, but not eye-safe 1.57 microns, which will obviously affect the use of the pod, there is WMD-7 pods seem to be missing wide view (24 * 17 degrees) at night low-altitude navigation capability, I think this may be the PAF JF-17 to perform mostly in close air support and attack missions shallow depth, does not perform low-altitude long-range strike missions, or the low-altitude penetration capability of radar to do, such as Add a terrain following radar and avoid regression model, the pod from the simplified structure and reduce the cost point of view,
PAF does not require the WMD-7 with navigation capability, in fact, in our Air Force, the information from the public point of view, such as the Zhuhai Air development of the F-10S in the pod layout view, using a system similar to the U.S. Air Force LANTRIN dual pod system, which uses low-altitude navigation pod Blue Sky (equipped with terrain following radar, forward-looking infrared system wide view) to support WMD-7 pods, be pointed out that in some data that the role of distance as a new generation of pod, you can cancel the original navigation pod, but the two pods from the current use of the latest situation; U.S. Air Force AAQ-13 is still used to support low-altitude navigation pod Sniper XR pods, while France's DAMOCLES pod also has a special Wide forward-looking infrared navigation device, this also shows that the current dual pod system is still low altitude remote country night Anti-attack pod of choice. 值得一提的是
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JF-17It is worth mentioning that the JF-17 is equipped with laser-guided bombs, and no wind we are familiar with the header, so I guess should be used 500 kilograms of the latest laser-guided bombs, the missile uses proportional navigation guidance system, rather than the original speed track guidance system, proportional navigation guidance accuracy better way, and can overcome the influence of wind, can attack the target speed, is the new laser-guided bombs used to guide the general approach. 具备更强的作战能力。 Have more combat capability.
Although optical targeting pods to improve capacity aircraft's low altitude penetration, but limited by its own limitations, and its standoff attack capability is poor, forward-looking infrared devices can not obtain the target distance, must have a laser device with, but the laser in the atmosphere close distance, although a new generation of optical laser device known as pods, such as DAMOCLES working distance can exceed 40 kilometers, but the height of the operation to more than 10,000 meters, the conditions for the disadvantage of the PAF, this is obviously unrealistic.
JF-17 Therefore, the greater need Standoff Weapon System for the Indian Air Force combat capability in the case of increasing, especially in the Indian Air Force A-50EHI early warning aircraft enter service today have been able to hit the target, save themselves, from the point of view the air show,
JF-17BLOCK1 Ray Stone in China has been able to mount -6 glide bomb, mine stone -6 500 kg in a normal installation of aerial bombs on the GPS / INS guidance components and a high aspect ratio come on the wing, on the wing than the advantages of exhibition is a large lift, induced drag is small, with better conditions in the subsonic lift-drag ratio, the distance run, according to information delivery from the mine stone -6 more than 60 km, can be in India outside the range of most air defense systems put in, as Ray Stone -6 is used in GPS / INS guidance system, so there is signal interference during the war and shielding the risks, but the JF-17's KLJ -7 synthetic aperture radar will have high-precision drawing mode, you can detect ground targets, and then combine their laser inertial navigation system to obtain target coordinates, and then enter into the mine rock -6 to guidance systems, and JF-17BLOCK2 the AESA is in the mode of implementation of the land, while at the same time detection of air targets, to further enhance the aircraft in high threat combat environment.
In addition to Ray Stone -6 outside, JF-17BLOCK2 Pakistan will also be developed by integrating two types of attacks outside the zone system, which is the
H2/H4 attack system and Raytheon Standoff Standoff attack system, the two systems are imported from South Africa in Pakistan precision-guided attacks its own production technology system in which the design concept and Ray H2/H4 stone -6 similar system installed in the general-purpose bombs gliding wing and TV guidance system is made, H2 delivery distance of 60 km, while the H-4 the installation of a booster rocket engine, a range of more than 120 km, H-2/H-4 are equipped with data link, to support the attack mode after launch lock, which is the first bomb run to the target briefly, and then the pilot used Bomb TV seeker locks onto the target image is returned, and also the importance of targeting or attack the weak parts, and the assessment of the effects of attack, and attack the system Raytheon is an international standoff standoff munitions popular tear cloth system, from Pakistan published pictures of view, Raytheon Systems, non-circular cross section projectile body, a certain degree of stealth capability, hence, have better interior space utilization series, will help modular bomb bay to accommodate the different munitions to deal with different target, the system uses a large aspect ratio and jet engines under the wing, so far with the range, with Raytheon Systems, JF-17 in the India-Pakistan border can hit targets deep in India, and further greatly enhance the aircraft's operational capabilities and viability.
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Through the above analysis we can see, JF-17 through its excellent performance, has received recognition of PAF, PAF has become an integral part of combat; through the installation of AESA and SD-10B air missiles, to improve aircraft Su-30MKI fighters to combat ability, while the introduction of stand-off attack systems to further enhance the aircraft against ground targets in India, Pakistan's JF-17 project in the sound and pragmatic attitude and India high in the LAC project Nu Yuan Shang Hao practice in sharp contrast; MK1 fighter configuration in the LCA is not the case of compliance, but also investment in development of MCA fighter actually, all regardless of their own strength is able to develop such a plane.
trnslation is crappy, so i'm posting link aswell
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