Russia’s SU-35: Mystery Fighter No More

Russia’s SU-35: Mystery Fighter No More

As one of our readers noted, DID’s articles from 2005-2007 seem to describe 2 different SU-35s. One is a mid-life modernized SU-27 Flanker, but there’s also much more re-engineered “SU-35” variant with canards, thrust vectoring, etc. has been confused with (and possibly redesignated between) the SU-37. So… what do we mean by “SU-35”?

This article explains the sources of the widespread confusion regarding the SU-35’s layout and key characteristics, reviews what is now known about the platform, and tracks its development. Those developments are likely to have broad consequences. The aircraft has a home customer in the Russian Air Force, and the SU-35 is being positioned to succeed most SU-30MK variants as Russia’s fighter export of choice within the coming decade.

The latest news involves additional details regarding the SU-35’s initial multi-year Russian production order, and discussion of the aircraft’s export prospects…

Which Sukhoi? The SU-35 Platform

Until very recently, only KnAAPO has listed the SU-35 as a product on its site; Sukhoi now does so as well, but Irkut does not. If this seems confusing, it’s because Sukhoi subcontracts production to affiliate firms – IAIA (Irkut) and KnAAPO (Komsomolosk un Amur). Each has their own intellectual property, and their own interests. In addition, the designation “SU-35” has been used in several different contexts over the years. It has been referred to, and even photographed, in ways that referred to both mid-life Flanker upgrades and canard-equipped next-generation aircraft. KnAAPO’s site added the confusion by showing SU-35 pictures on its type page and gallery that display the aircraft both with and without canard foreplanes. The Rosoboronexport catalog picture was unclear.

The current “SU-35”, which has been definitively described by Sukhoi, appears to be something of a compromise between the upgrade and full redesign visions. Reader assistance and sources from Sukhoi and various media offer an outline of its key systems and characteristics:

”…(known as Su-35BM by some sources- ie. T-10BM to the original Su-27s internal T-10S designation). Differences and features largely speak for themselves in the video, but a short summary follows as related in various other sources follows:

1 – N035 Irbis-E PESA Radar, a follow-on to the Bars-M.
2 – No canards
3 – Rear-looking self-defence radar in shorter tail sting
4 – AL-37FU/ 117S thrust-vectoring turbofan engines rated at 142-147kN
5 – Extended high-lift devices with large flaperon occuping the full trailing edge of the wing
6 – L175M Khibiny-M electronic-warfare self-defence system
7 – Reduced-area empennage
8 – Larger Air Intakes
9 – New and lighter systems, including quadruple digital fly-by-wire flight-control system.
10- New man-machine interface with fully-glass cockpit with two large LCD screens and helmet mounted display.”

Read more about the Su-35