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Wang Ya'nan, deputy editor-in-chief of Aerospace Knowledge, said on Tuesday that it will be some time before the PLA commissions the domestically developed fifth-generation fighter jet, the J-20.
"After the J-20 joins the PLA, it will also take time for our pilots to familiarize themselves with the aircraft. So the Su-35 will help the PLA fill in the gap before it has enough J-20s."
"The Su-35 is very close to a fifth-generation combat aircraft in terms of flight maneuverability," Wang said, adding that technological advances represented by the Su-35 are another major attraction for the Chinese military.
The operational range of the Su-35 is much greater than the Su-27's, which means it will give China an edge over the South China Sea, he said.
"The PLA has a limited number of aerial refueling aircraft, and these tankers are not as good as those from the United States. That leads to a constrained operational range and flight duration for our existing fighter jets," Wang said.
"Combat jets capable of flying farther, like the Su-35, which boasts a larger fuel capacity than the Su-27, can substantially improve the PLA's presence over those waters."
Fu Qianshao, an aviation equipment expert with the PLA Air Force, said the Su-35 is sufficiently powerful to surpass the US Lockheed Martin F-35 Lightning II thanks to its supreme maneuverability.
"Despite the Su-35 having no stealth capability, it can still rival fifth-generation fighter jets in other aspects. Its service will complement our existing fourth-generation fleet of J-10s and J-11s," he said.
Song Xiaojun, a military commentator for China Central Television, said the first 24 Su-27s that were introduced to the PLA Air Force have started to be withdrawn from service, so the Su-35s are expected to fill the gap.