According to reports released through Chinese media, a modified version of their Chengdu J-20 stealth fighter, dubbed the J-20B, has just entered mass production. This new variant of their first fifth-generation fighter will continue to run dated Russian-built engines, but will utilize thrust vectoring control nozzles to grant the aircraft a significant boost in maneuverability.
"Mass production of the J-20B started on Wednesday. It has finally become a complete stealth fighter jet, with its agility meeting the original criteria," the South China Morning Post credited to an unnamed source within the Government.
Chengdu J-20 (WikiMedia Commons)
"The most significant change to the fighter jet is that it is now equipped with thrust vector control."
Thrust Vector Control
Thrust vectoring nozzle for a Eurojet EJ200 turbofan (WikiMedia Commons)
Thrust vector control, sometimes abbreviated to TVC, is a means of controlling a jet or rocket engine's outward thrust. Thrust vectoring nozzles are used to literally move the outflow of exhaust in different directions to give an aircraft the ability to conduct acrobatics that a straight-forward nozzled jet simply couldn't do.
When paired with an aircraft like Lockheed Martin's F-22 Raptor, thrust vectoring control allows an aircraft to make sharper changes in direction, or even to continue traveling in one direction while pointing the nose, and weapons systems of the aircraft, down toward an enemy. Put simply, thrust vectoring nozzles let you point the engine one way, while the aircraft itself is pointed in another (to a certain extent).
In a jet like the F-22 (and soon in China's J-20 stealth fighter), this technology gives fighter pilots a distinct advantage over non-thrust vectoring jets in a dogfight. You can see the thrust vector control surfaces on the F-22's engine, which can direct the outflow of exhaust up to 20 degrees up or down, in this video clip:
Russia also employs thrust vector control technology in some of their more capable fighters, like the Sukhoi Su-35, which is widely considered to be among the most capable fourth generation fighters in service anywhere on the planet. While stealth and sensor fusion capabilities would give an F-35 Joint Strike Fighter the long range advantage against the non-stealth Su-35, the Russian jet would technically be capable of flying circles around America's premier stealth fighter if stealth weren't in the picture (luckily, however, it is).
Of course, that's not what the F-35 was built for, and in a real conflict, an F-35 would likely shoot down a Su-35 before the Russian pilot was even aware of an American presence in his airspace. China's J-20 stealth fighter, however, would very likely be extremely difficult to detect on radar or by infrared signature as it closed with an opponent from head on, and the J-20B's thrust vector control abilities combined with that inherent sneakiness could make this new J-20 a serious adversary for the F-35, and even a worthy opponent for the F-22.
The F-35 Joint Strike Fighter versus China’s J-20 Stealth Fighter
While the F-35 tends to garner the lion's share of attention, it truly was not built to serve in an air superiority role against near-peer or peer level adversaries. The F-35's strengths don't come from its speed or maneuverability, but rather from the extremely effective one-two punch it can deliver via stealth technologies, sensor fusion, and communications.
Many F-35 pilots, including Sandboxx News' own Justin "Hasard" Lee, will tell you that the F-35's role in many dogfights isn't that of an up-close dog fighter, but rather more like a quarterback in the sky, accumulating and processing data into an easy-to-manage interface, and relaying that information to aircraft and other weapons systems in the battle space.
(U.S. Air Force photo by Christopher Okula)
When it is up to the F-35 to take down an airborne opponent, the F-35's speed and maneuverability limitations are usually not a significant concern, as the jet is designed to engage enemy aircraft more like a sniper than a boxer. The F-35's data fusion capabilities make it easy for the pilot to identify enemy aircraft in their heads up display, and the fighter can even engage multiple targets from distances too far to see with the naked eye.
J-20 (WikiMedia Commons)
However, the J-20 may be difficult to see for even the mighty F-35, which, when combined with the J-20B's higher top end and superior mobility thanks to thrust vectoring nozzles, it could be a real threat to America's top tier stealth fighter. The front canards on the J-20, however, are believed by some to compromise the aircraft's stealth when approaching from angles other than head-on. Debate continues on this front, but it could give the F-35 the advantage it needs.
Of course, that is if the J-20B performs as China claims it will.
The F-22 Raptor vs China’s J-20 Stealth Fighter
USAF F-22 Raptor (U.S. Air Force photo by 2nd Lt. Samuel Eckholm)
This match up is a bit more appropriate, as the F-35 was built to be a jack of all stealthy trades and the F-22 was built specifically to dominate a sky full of enemy fighters. Unlike the F-35, which is largely limited to subsonic speeds in both the Navy and Marine Corps' iterations, the F-22 is fast, mean, and acrobatic in addition to its stealth capabilities.
China's stealth fighter, the J-20, was designed using stolen plans for Lockheed Martin's F-22 Raptor, giving it a similar profile and potentially similar combat capabilities. However, it seems unlikely that China has managed to replicate the complex process of mass producing stealth aircraft to the same extent the United States has, as America's stealth work dates back to the 1970s and the development of the "Hopeless Diamond" that would eventually become the F-117 Nighthawk.
As previously mentioned, the J-20's front canards could potentially limit the aircraft's stealth capabilities as well, making the plane difficult to detect from head on, but potentially easier from other angles.
Some content that these canards compromise some degree of the J-20's stealth capabilities. (Chinese internet)
Although China has announced that their J-20B will come equipped with thrust vector controls, just how effective their system will be remains to be seen, meaning that, like China's stealth capabilities, their execution may potentially fall behind their bluster.
Assuming, however, that the J-20B performs exactly as China says it will, the aircraft could likely be a worthy opponent for the F-22 in some circumstances, especially when flying in greater numbers than America's top intercept fighter, which just may be a serious issue in the near future, as America simply can't build any more F-22s.
China’s potential stealth fighter numbers advantage
Chinese J-20s flying in formation (Chinese internet)
While it remains to be seen if China's J-20 stealth fighter and upgraded J-20B will be a real match for America's F-35 or F-22 in a one-on-one fight, the truth is, very few fights actually shake out that way. Pilots spend tons of time planning their combat operations to limit their exposure to high risk situations and to maximize the effectiveness of their stealth profile.
Thus far, it's believed that China has built fewer than 50 J-20s, though production may pick up as China now seems comfortable using dated Russian power plants in their new fighters, rather than waiting on their long troubled WS-15 engine that was designed specifically for this application. Using these engine platforms may limit the overall performance of the jet, but it will also allow for more rapid production–which may create China's only actual advantage in an air-to-air conflict.
Lockheed Martin produced only 186 total F-22 Raptors before the program was shut down, and today, far fewer are actually operational. In other words, America may have the world's most capable air intercept fighter in the F-22, but it also has an extremely limited supply of them. The supply chain established for F-22 production has been largely cannibalized for the F-35, so there's no hope in building any more either.
USAF F-22 Raptor (U.S. Air Force photo by Tech. Sgt. Westin Warburton)
China's J-20 stealth fighter, on the other hand, is still under production, and while Russian-sourced engines may make their fighter's less capable than America's stealth fighters, China may more than offset that disadvantage through sheer volume. Even if a J-20 doesn't stand a chance in a scrap with an F-22, adding four or five more J-20s into the mix places the odds squarely in China's favor.
Today, the United States maintains the largest fleet of stealth aircraft in service to any nation, but over time, that advantage could be eroded thanks to China's massive industrial capabilities.
America’s massive experience advantage in the skies
Two F-22 Raptors and a T-38 Talon from Tyndall Air Force Base, Florida, fly together during a 43rd Fighter Squadron Basic Course training mission Oct. 7, 2013 over Florida. (U.S. Air Force photo/Master Sgt. J. Wilcox)
China's J-20 stealth fighter may potentially end up a near competitor for America's top stealth jets, and they may eventually overcome any advantage America's fighters do have through volume, but there's one integral place Chinese aviators still lag far behind American pilots: experience. America's experience advantage manifests in two specific ways.
The first experiential advantage American pilots have on their side is practical flying time aboard their specific platforms. While the total number of required flight hours for pilots varies a bit from branch to branch, on average, a U.S. fighter pilot spends around 20 hours per month at the stick of their respective jets. That shakes out to around 240 flight hours per year devoted strictly to training for combat operations.
(U.S. Air Force, Tech. Sgt. Ryan Crane)
Chinese fighter pilots, on the other hand, average less than half of that per year, with most pilots logging between 100 and 120 hours flying their particular airframes. With more than double the annual flying experience to pull from, American fighter pilots across the board will be better prepared for the rigors of combat.
The second facet of America's experience-advantage is in real combat operations. The United States has been embroiled in the Global War on Terror for nearly two straight decades, and while most of the flying American fighter pilots have done throughout has been for the purposes of ground attack or close air support missions, there's no denying that American aviators have more experience flying in a combat zone than their Chinese competition.
A formation of F-35A Lightning IIs (U.S. Air Force photo by Staff Sgt. Andrew Lee)
Although there have been very few dog fights in recent years, it's worth noting that one of the world's more recent fighter-to-fighter shoot-downs took place over Syria and involved a U.S. Navy F/A-18 Super Hornet engaging a Syrian military Su-22 Fitter. American pilots, and just as importantly, America's military leadership, are no strangers to war, and that offers a unique insight into future conflicts.
China's massive military has undergone a significant overhaul in recent years that still continues to this day, but their relative inexperience and likely inferior stealth technology keeps China at a disadvantage in a notional conflict with the United States, especially in the air.
So do the J-20B’s upgrades even matter?
Chengdu J-20 (Chinese internet)
While China may still have a ways to go before they can claim the sort of stealth dominance the United States enjoys, the upgraded systems placed in China's J-20B certainly do matter. As former Defense Secretary and famed Marine General James Mattis once said, America has no pre-ordained right to victory on the battlefield.
It's absolutely essential that we take an objective look at China's growing military threat and remember that they don't need to match America's broad capabilities to gain an advantage–they need only to counter them. Working to devise creative solutions that offset tactical advantages has been an integral part of warfare ever since humans first started sharpening sticks, and it remains essential today.
The J-20B doesn't need to be a match for the F-22 Raptor if its leveraged properly and in sufficient numbers, and that alone warrants consideration.
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