Lightning Wings - On the JF-17B two-seat combat trainer
JF-17B model, the uplift of the machine back is its greatest feature
of the year at the Paris Air Show, China's first exhibition of the JF-17 two-seat fighter model, the Pakistan Air Force unconfirmed contact ( PAF ) is numbered JF-17B , which indicates JF-17 fighter has formed a complete series to improve its competitiveness.
From the model point of view, JF-17B mount a SD-10 active radar-guided missiles and C-802AK air-launched anti-ship missiles, with full operational capability, show that the plane was more combat missions.
Outside the first time that JF-17B existence is 2011 years " AirForces Monthly "for the first time publicly reported Pakistan desired to develop JF-17 's two-seat fighter / trainer aircraft , and it's conceivable that public figure , this year's JF-17 's chief designer Yang comrades for the first time publicly confirmed JF-17B program exists , this is the first public demonstration of JF-17B, so that the outside world can be first observed this type of combat / trainer . According to the information Airshow JF-17B domestic numbered FC-1B, it is to highlight the development goals of the coach, also has the JF-17/FC-1 considerable combat capability aircraft of the same type seat combat trainer. It usually is mainly used JF-17/FC-1 airplane pilot flight training and tactical training modifications, can be used to perform combat missions during the war, is JF-17/FC-1 an important series aircraft models. JF-17B Early imagine Figure
From the model point of view , JF-17B in addition to increasing an outside cabin , in terms of the overall layout of the JF-17 is not much difference , but the difference is that with the similar figure , JF-17B has a more generous rear , which is mainly because the two-seater fighter aircraft compared with the single-seat fighter , the addition of a cockpit , there are other pilots ejection seat, cockpit display systems and related lines, pipelines, etc., thus crowding out the aircraft avionics and fuel space, in order to ensure aircraft's combat capability, range will not drop too much, so it is necessary to increase the aircraft's space, so this increase is to increase the rear of aircraft avionics systems and fuel.
From the model point of view, many users may feel JF-17B model obviously did not imagine the good-looking figure, in fact, that the thickening of the machine back not only increase the weight of the aircraft, it also increases the resistance of the aircraft, in fact, this machine back in many aircraft above are present, including the F-16B / D , Su -27UB , EF-2000 , etc., its drawback is the plane length does not increase too much, thus avoiding the aircraft empty weight rising too quickly, too much impact on the performance of the aircraft to F-16 as an example, F-16C (with F100-PW-229 engine) empty weight of 8400 kg, while the F-16D weighs 8600 kg, while the other JAS-39 using lengthened to increase the avionics and airframe fuel space, JAS-39 single-seat length is 14.1 meters, and the JAS-39B two-seater reached 14.755 meters, with an empty weight of the former is 6622 kg, which reached 8000 kg, weight reached 1300 kg But JAS-39B wing area, engine thrust than the JAS-39A did not increase, so it's definitely fall flight performance more than the latter.
From this point of view can be speculated about JF-17B ultimately did not adopt similar figure as program, which although can guarantee the aircraft's range, while generating resistance is relatively small, but certainly need to increase the length of the aircraft, it will cause the aircraft empty weight The rapid increase, then the corresponding need to increase engine thrust to balance, according to the relevant information, JF-17 single-seat empty weight of 6500 kg, the oil 2300 kilograms, according to the JAS-39B program, also similar to Fig. program, then it's empty weight may increase to 8000 kg, while the JF-17 currently used in RD-93 engine afterburner thrust is 8300 kg, so the standard combat aircraft state (half oil, two infrared missile PL- 5E-2 , pilots and shells) is about 9500 kg, air combat thrust to weight ratio is about 0.87 , this state are really low. So at least put RD-93 increased to RD-333 level, which is the afterburner thrust increased to 10,000 kg, in order to ensure that the aircraft be able to better combat thrust to weight ratio, but this is probably Russia's own engine even have to take it out.
So we can see, JF-17B uses a relatively conservative approach to control the length and weight of the aircraft, according to this scheme, JF-17B will be controlled at the empty weight 7000 kg, so the state of its standard combat weight can be maintained at about 8300 kg to RD-93 of 8300 kg thrust of view, the air weight ratio close to 1 , so that it can get some flight performance is guaranteed. Of course, it's drawback is that the aircraft fuel load may be reduced, thus affecting the aircraft's range and the blank time, but for a country like Pakistan, its land area is not large, combat aircraft for the flight and flying time requirements and not high, the corresponding face of the Indian Air Force such a powerful enemy, combat performance is more important than others might, so JF-17B chose a conservative scheme is also understandable.
So JF-17B Air Force chief in Pakistan and other countries which perform combat missions, it should first be pilot fighting coach, currently the Pakistan Air Force's training system is the first in the primary trainer complete primary coach, and then in the K-8 at the completion Intermediate training, and finally into Forces the use of two-seat combat trainer complete facelift advanced flying techniques and training from now, JF-17 do not own the same type of combat trainer, so it may be in the pilot work facelift FT-7PG done above, but JF-17 uses a relatively large edge of advanced aerodynamic layout, telex control system, flight envelope and Flight Status & FT-7P larger difference, manipulation habits are not the same, so when the pilot from the FT-7 facelift to JF -17 , I will feel a greater suited, so that is not conducive to the training of pilots for combat effectiveness of troops Miguel also had a negative impact, as the JF-17 equipped with the expansion, may PAF need JF-17 two-seat fighter trainer.
One might ask, why PAF not to purchase L-15 Falcon aircraft such as the pilot combat trainer, which is now widely used in various countries as a model, but the development of JF-17B , I believe, for the PAF , the Indian Air Force to face such a powerful enemy, needs more fighters, while the JF-17B has a complete avionics systems and flight performance than the JF-17 is not too bad, it can also perform combat missions and ground precision combat and other tasks, while many of these tasks is L-15 "Falcon" do not move, the PAF is, L-15 " Falcon " all-state type necessarily cheaper, because the latter in order to ensure performance, using a more more composite materials and advanced technology, equipped with a four-axis fly-redundant system, glass cockpit, while the JF-17 in the material and the structure is relatively conservative, this also reduced the price, more importantly, PAF has JF-17 established a relatively complete logistical support system, JF-17B can take full advantage of this set of systems, so do not like the L-15 "Falcon" that once again put, so from the use of cost in terms of, for the PAF , the JF-17B may be a more appropriate choice. Installation of conformal fuel tanks of PAF F-16D, which is obviously more for long-range strike missions
Also JF-17B itself better tactical and technical indicators, according to the latest reports JF-17B also switched to four redundant fly-axis system, they can even do PAF pilot serving other combat trainer aircraft, such as the F-16 , from the relevant reports of view, PAF fleet of F-16DBLOCK52 two-seater fighter aircraft, equipped with conformal fuel tanks capable of launching AIM-120C5 active radar guided air to air missiles, mount a sniper optical pod, with the ability to launch laser-guided bombs, is PAF active in the strongest ranged attack multi-purpose aircraft, apparently PAF fighter reluctant to use such advanced subjects in a simple landing training, so you can take advantage of JF-17 advanced cockpit, FBW to train F -16 pilots, thus avoiding the use of precious three generations of some simple two-seater aircraft flight training courses. JF-17B mount SD-10 and C-802AK, with full operational capability
I said before JF-17B with full operational capability, so in a training mission at the same time, you can also perform combat missions, it is equipped with airborne radar may JF-17 the same, is China's KLJ-7 type, according to the PAF 's argument, it is for RCS = 5 goals can provide 130 km detection range, can guide SD-10 active radar guided air to air missile with a range 50-70 km , with most of the Indian Air Force combat aircraft combat ability, according to the Israeli Air Force actual combat experience, since three generations of machines increased a two-seater passenger aircraft, so it's battlefield situational awareness capabilities better than single-seat fighter fleet therefore suitable as a command and control aircraft to use. This is the most typical example is the former Soviet Union in the Soviet Union-27UP developed on the basis of the Su -27PU air command and control aircraft, which uses TKS-2-27 data link can be airborne radar data to four Su -27SK fighter, is it for the target indication. American F-14 can also use LINK-4C aircraft formations composed of a four combat system.
Enter the LINK-16 since the era, which supports the exchange of information between the fighter's ability to better, so fighter is more sharing of information between Czech and convenience, LINK-16 data link among the lead aircraft to the fleet can be made ​​by any member Empress Empress investigate specific target, attack, and out of combat orders, receiving fighter attack can also be conveyed back to the state of fighting, including the ongoing exploration target is the target of attacks, whether the target is hit, quit fighting and so on, China's Air Force ago exercises soon appeared AWACS to be "shot down" fighter successor to boot subjects, so JF-17B may also be equipped with such a data link, so ZDK-03 AWACS air marshals information can be provided to the first JF-17B , then by the latter to the formation of other single-seat JF-17 fighter aircraft, thus reducing the ZDK-03 command guidance staff workload. Mount WMD-7 pods of JF-17 single-seat, pay attention to the right of the pod
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JF-17B Another important task is to combat precision ground attack, although JF-17 is equipped with a country on WMD-7 optical targeting pod, which is equipped with a forward-looking red detection system, CCD cameras, laser designator / rangefinder system , with target detection, identification, tracking and locking capabilities, you can put laser-guided bombs and other precision-guided weapons to attack ground targets, but if you make a single-seater both low altitude penetration, but also the search target, then put weapon attacks goal, a heavier burden, especially after the launch of laser bombs, but also to maintain the state to prevent a bomb off the lock, thus limiting aircraft maneuverability, reduced aircraft maneuverability and battlefield survivability, more should be a safe way illuminate the target aircraft at low altitude, high-altitude aircraft bomb and then another one immediately after the maneuver to escape, while the JF-17B due to the increase of a pilot, more suitable for low-level radiation such work.
JF-17 launch H-4 Standoff Attack Missile imagine Figure JF-17B
there is a function not fail to mention that standoff, South Africa, Pakistan, the use of technology, successfully developed H-4 type standoff ground missiles, it TV-guided bomb is based on the installation of solid rocket motors, data links, wing glider is made, you can take advantage of people in the loop control to achieve after launch lock feature, which is the advantage of a long range, can reach 120 km, The second is the high accuracy, the pilot can select the target against the weak parts, and according to the image before hitting the target evaluate the effects of combat, since H-4 has exceeded most of the Indian anti-aircraft missiles, it can be in each other's air defense system outside the range of important goals to fight each other, but this kind of work, single-seat pilot, it may be too heavy, so basically launching some of these missiles are mostly two-seat fighter-bomber or bombers. JF-17B is clearly a better carrier aircraft. JF-17 held imagination figure out RAAD
Also JF-17B can also be equipped with self-developed lightning Pakistan standoff munitions cloth tear system, from the picture point of view, lightning Standoff Munitions Dispenser system uses a stealth design, turbo-fan engine, a range of over 300 kilometers, the system weighs 1100 kg, of which warhead weighs 450 kilograms, can attack each other airports, ports, communication centers and other important goals, such JF-17B will have the ability to attack targets deep in India.
JF-17B model is also mounted C-802AK air-launched anti-ship missiles, and that it also has the ability of anti-ship missiles, C-802AK range can reach 180 km, can suppress the Indian Air Force air defense of existing vessels, in addition JF -17B is equipped with more advanced data link, you can achieve information sharing between formations, so JF-17B can get access to the target radar information is then passed to the other fighters, providing them with objective guidance, providing formation attack capability.
So for PAF speaking, JF-17B does not just simply adds a trainer, and raise for the troops to provide a more complete operational capability, but also let JF-17/FC-1 more perfect models, but also improve its competitiveness
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