Archive for the 'PAK-FA' Tag

Have been a bit sparing of late on posting here and at homeplate, in large part because the day job(s) have been demanding their pound (more like tens of pounds) of flesh. And developments appear to promise a major surge on one front in the next few weeks, so we’ll take advantage of the relative calm afforded during the next day or two to catch up on some previously reported events. Today — Russia and some updates on the PAK-FA and Bulava SLBM…

17 июня 2010 года 17:30 | Сергей Турченко 17 June 2010 17:30 | Sergei Turchenko

Putin's Introduction to the PAK-FA (17 June 2010 | (c) Sergei Turchenko)

Russia: Putin Pledges 30 Billion Rubles for Fine-tuning PAK-FA

(Source: Свободная Пресса, 18 June 2010 (translated))

Russia’s fifth generation fighter program began roughly the same time as the US’ effort that yielded the F-22A, according to Russian sources. Delays stemming from defense and industry reform and economic slowdown in the wake of the breakup of the Soviet Union drew out the program. Cul-de-sacs beginning with the Berkut and later the MiG 1-44 added further delay until Sukhoi was back in charge of the project with the PAK-FA proposal. Taking the occasion during a recent demonstration/test flight (16th since first flight in January?), Russian Prime Minister Vladimir Putin identified about 90B rubles (руб) (~ US$ 3.3B ) in development funding for the Central Aerohydrodynamic Institute (TsAGI), the Aircraft Construction Center at Zhukovsky and the PAK-FA. 60B руб is to go for building three additional tunnels at TsAGI and another 11B руб to the new center to be constructed at Zhukovsky. The former will be spread out in installments over the next several years, the new center is slated for completion around the end of 2012.

As for the PAK-FA — I think the expression in the photo above bespeaks volumes. As the US has discovered in the prolonged gestation periods for the F-22 and now the F-35 with commensurate rising production costs, the ticket for entry into the 5th generation fighter program is indeed an expensive one. Despite happy-talk about the PAK-FA being “two and a half and three times less than of its foreign counterparts” it is still too expensive for the Russian economy. Over 30B руб has been expended thus far on PAK-FA development and it is still sans the 5th gen engines necessary for all aspect stealth and a good bit of development remains on the weapons system. Even with the promise of another 30B руб forthcoming, much like the F-35, the PAK-FA will be heavily reliant on outside funding to come close to meeting any kind of production numbers. India has stepped to the plate, offering cash but also demanding a healthy portion of the early production, demanding 250 aircraft by 2017. And those are to be two-seaters.

Despite the acclaim the PAK-FA has received, as an expensive sink-hole in the Russian re-armament program, it has garnered its fair share of domestic criticisms:

Independent analysts give an overall negative forecast for the national rearmament program. The country has virtually wasted the 20 years which have passed since the break-up of the Soviet Union, said Anatoly Tsyganok, head of the Moscow-based Center for Military Forecasts.

Not a single new tank or fixed-wing aircraft has been developed since 1991, with only one helicopter being developed and used. “Fifth-generation planes are very expensive. Comparing total costs, Russia and the United States spend approximately the same amounts on their development and production,” Tsyganok told the paper. (Nezavisimaya Gazeta – translated)

Calvin Coolidge once waspishly commented on the high price of aircraft by asking why not buy one airplane and let pilots take turns flying it. With the advent of triple-digit million dollar fighters, we may be reaching such a point and it is evident that the US isn’t the only nation happening upon this circumstance. But, as far as the Russian leadership is concerned, for now at least the PAK-FA is flying, the same cannot be said about an even more vital element in the national defense plan, the Bulava SLBM…

Bulava SLBM to Resume Test Flights in August 2010

President Dmitry Medvedev and Defense Minister Anatoly Serdyukov observe the Borei-class SSBN, Yury Dolgoruky underway for sea trials. 16 July 2010 (c) Sergei Turchenko

(Source: Свободная Пресса, 18 June 2010 (translated))

A recent interview with the former commander of the Soviet and Russian Navies, Admiral Vladimir Chernavin (translated), was revealing on several fronts insofar as the much troubled Bulava is concerned. Of first note was the fact that it appears testing of the Bulava will resume earlier (August 2010) than previously reported (November 2010 at earliest). At the time of the previous announcement in May, it was stated that a production run of three identical missiles was required before the next round of tests began – whether the earlier date is a reflection of that requirement being dropped or discovery of the root cause of the series of failures (particularly with the liquid-fueled third stage*) remains to be seen. Perhaps after having seen the head of the Strategic Missile Forces get sacked after less than a year on the job over probable readiness issues, Navy and industry found renewed enthusiasm for a more aggressive schedule.

The Bulava and its development trials and travails have served as a poster child for a larger view of a Russian defense industry that increasingly is finding it difficult to meet the demands for new forces while adjusting to the post-Soviet era. Consolidation has struck the industry as hard, if not harder, than its US counterpart. In his interview, ADM Chernavin pointed to the need for a replacement for the Sineva SLBM (ed: R-29RMU/RSM-54 Sineva/SS-N-23 SKIFF). The Sineva, while an exceptional missile in service (duration and capability — the last test launch was to its full 11,547 km range) is also a completely liquid-fueled missile, utilizing exceptionally dangerous hypergolics, which present a hazard to the boat and crew as well as demanding special care in materials selection and construction to avoid/contain any leakage. The drawbacks of hypergolics (ed. research and work on, I would note, have been part of the reason behind the paucity of posts – SJS) are the chief reason all US ICBMs and SLBMs as well as all new Russian ICBMs are solid-fuel. An earlier attempt at a solid-fuel SLBM, the R-39 (NATO: SS-N-20 Sturgeon) brought forth a 10-warhead missile, but one that was exceptionally heavy, with a launch weight of 90 tons. A follow-on to the R-39, the R-39UTTH “Bark suffered three consecutive failures in its first stage in early testing and was canceled. The Bulava followed in part, because the institute building it was also building the Topol-M land mobile ICBM and figured to gain efficiencies in development and production by emphasizing commonality between the two.

Chernavin points to the beginning of problems when the Bulava designers learned that, surprise, submarines move whereas the Topol, while a mobile missile, is fixed in place for launch. Compounding the flawed foundation decision-making was a series of cost- and schedule decisions to speed up the development process and shaving tests. The lead designer of the missile, Yury Solomonov, points the finger at Russia’s defense industry in general:

“I can say in earnest that none of the design solutions have been changed as a result of the tests. The problems occur in the links of the design-technology-production chain,” Solomonov said in an interview with the Izvestia newspaper published on Tuesday.

“Sometimes [the problem] is poor-quality materials, sometimes it is the lack of necessary equipment to exclude the ‘human’ factor in production, sometimes it is inefficient quality control,” he said.

The designer complained that the Russian industry is unable to provide Bulava manufacturers with at least 50 of the necessary components for production of the weapon. This forces designers to search for alternative solutions, seriously complicating the testing process.

That and evident quality control problems have led to a test program with between 1 to 5 (depending on whom you are talking to) successes in 12 launch attempts. However, with nothing else even on the drawing boards and a new class of SSBNs designed such that the Bulava is the only missile they can take, the die has been cast. Chernavin underscores this state of affairs with a verbal shrug and dose of fatalism, noting so much effort has already been spent that eventually “they will force it to fly” (“Но, уверен, «Булаву» все-таки заставят летать”).

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* Why a liquid third stage? That is the post-boost vehicle (PBV) that carries the MIRVs — a liquid-fuel engine allows controlled start/stops to precisely maneuver the PBV as it releases the MIRV payload.

(crossposted at steeljawscribe.com)



You may recall that when the PAK-FA first took flight earlier this year a quick analysis was run on these pages and those over at my home page with a note that more granular analyses would surely be forthcoming. One of the first out of the box was over at the Air Power Australia site, and was pretty eyebrow raising in it’s own right. This past week Byron passed along an even more detailed analysis, all from open source material, that had come his way:

De-constructing the Sukhoi PAK-FA (Su-50)

(Stephen Trimble over at The DEW Line notes that Markov and Hull have done work for Institute for Defense Analyses in the past, but this brief may be an independent effort).

In addition to the usual host of subjects – comparison with the only other 5th gen fighter currently flying, the F-22, for one; there are some interesting and perplexing elements to the design. For starters there is the matter of the split canopy (slide 33) with a structural member down the center of the canopy. The embedded radar antennas in the cheeks and wing leading edges are notable, but not novel as it is alleged the F-22 has embedded sensors around the aircraft. However, a multi-band capability (X-band AESA in the nose and fixed L-band in the cheeks and wings) offers greater operational flexibility and complicates counter-measures planning.

As pointed out earlier, the engines appear to lag the rest of the airframe, but even at that, with German technical assistance (see slide 40) presumably for improvements in the R&D side of the house with targets of efficiency and service life of the engine, the engines should prove sufficient from a performance, if not stealth (see slide 65). Closer to the F-35 in that regard than the F-22.

The fact that of the run of 500, 250 are Russian and the other 250 are to be a two-seat variant for India is worth noting from a resources standpoint (e.g., FMS to India is required to bring the project to fruition, just like the F-35 requires it’s share of international sales), though one wonders how much technological access the Indians will be given. This is not a small consideration as technology sharing is a bone of contention between the US and it’s F-35 partners, especially where software for the weapons system is concerned. Makes one wonder if a partnership had been entered with Japan and/or Australia what the production cost offsets might have been as well as potential for moving on to a 2nd and 3rd generation F-22.

That technology can range from the exotic, like a potential plasma energy capability which would allegedly function to break the lock of hostile AAM’s (see slides 18 & 67) to what looks to be a breakthrough in stealth coatings. The latter, if true, is perhaps the most remarkable aspect of the aircraft because of the implications it carries, not just for the PAK-FA, but generation 4.5 fighters like the Su-35. Stealth coatings have been a major time and materials cost factor for operational aircraft. The B-2 required special climate control hangers for maintenance on its coatings and one of the charges against the still-born A-12 was the beating its coatings would take in the at sea environment on a carrier. If the Russians have indeed turned the corner on a material that provides a 10x reduction in RCS, is substantially thinner (and thereby, lighter), durable in the field and can be applied to generation 4.5 aircraft, that raises the stakes considerably for Western air forces confronting opponents operating aircraft like the Su-35 updated with this material. One needn’t look too far to find a near-peer competitor that would have significant interest in applying this to their own fleet of indigenously produced gen 4/4.5 fighters and what that in turn would allow them to put into place from an operational standpoint.

Still, there are only a handful of prototypes and full flight testing is supposed to begin later this month. It is a long road from the CAD/CAM boards to the flight line and as we have found out time and again with the F-117, B-2, F-22 and now with the F-35 that unforeseen issues arise during testing (like avionics cooling – a real bedevilment for stealth aircraft) that force design changes and production delays. One also wonders given the current state of industry in Russia if they will be capable of producing the numbers indicated and within the time-frames evidently agreed to.



PAK-FA_T-50Перспективный Авиационный Комплекс Фронтовой Авиации, Perspektivnyi Aviatsionnyi Kompleks Frontovoi Aviatsy, literally “Future Front-line Aircraft System”

As more video and still footage becomes available, some thoughts are emerging. First observation is that clearly this is just a flying prototype that focuses on the airframe and not much else for a 5th gen fighter:

Alexander Golts, an independent military analyst, said the T-50 is running on old engines, and the only major technological breakthrough was designing the airframe making the jet more difficult for radars to spot, in keeping with its U.S. counterpart.

Still, the basic airframe will define certain things that carry over to the production bird. More observations, video and imagery over at the homepage



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