主题：Su-35 -- 修竹

有詳細介紹蘇愷系的飛機。

外链出处

Sukhoi Su-35 Flanker E of the Russian Air Force

就有關電達，該網站的說法是：

The follow on to the BARS is the new Irbis-E (Snow Leopard) hybrid phased array, in development since 2004 and planned for the Su-35 block upgrade, and as a block upgrade or new build radar for other Flanker variants. The Irbis-E is an evolution of the BARS design, but significantly more powerful. While the hybrid phased array antenna is retained, the noise figure is slightly worse at 3.5 dB, but the receiver has four rather than three discrete channels. The biggest change is in the EGSP-27 transmitter, where the single 7 kiloWatt peak power rated Chelnok TWT is replaced with a pair of 10 kiloWatt peak power rated Chelnok tubes, ganged to provide a total peak power rating of 20 kiloWatts. The radar is cited at an average power rating of 5 kiloWatts, with 2 kiloWatts CW rating for illumination. NIIP claim twice the bandwidth and improved frequency agility over the BARS, and better ECCM capability. The Irbis-E has new Solo-35.01 digital signal processor hardware and Solo-35.02 data processor, but retains receiver hardware, the master oscillator and exciter of the BARS. A prototype has been in flight test since late 2005.

The performance increase in the Irbis-E is commensurate with the increased transmitter rating,and NIIP claim a detection range for a closing 3 square metre coaltitude target of 190 - 215 NMI (350-400 km), and the ability to detect a closing 0.01 square metre target at ~50 NMI (90 km) . In Track While Scan (TWS) mode the radar can handle 30 targets simultaneously, and provide guidance for two simultaneous shots using a semi-active missile like the R-27 series, or eight simultaneous shots using an active missile like the RVV-AE/R-77 or ramjet RVV-AE-PD/R-77M. The Irbis-E was clearly designed to support the ramjet RVV-AE-PD/R-77M missile in BVR combat against reduced signature Western fighters like the Block II Super Hornet or Eurofighter Typhoon. Curiously, NIIP do not claim superiority over the F-22A's APG-77 AESA, yet their cited performance figures exceed the public (and no doubt heavily sanitised) range figures for the APG-77.

另外有關，俄羅斯正在研制AL-41F，推力大為加強。

In terms of propulsion, we have seen incremental improvements in the AL-31F series, with the F-3 model cited at 28,250 lbf cf the baseline F-1 at 27,600 lbf. KNAAPO/Irkut are offering TVC kits as retrofit items to existing models, as they are offering seamless engine upgrades.

Engine makers NPO Lyulka-Saturn and MMPP Salyut are now actively competing with block upgrades to the basic AL-31F turbofan. Salyut have described a three phase block upgrade to the AL-31F, with components for the first phase already flight tested. The -M1 upgrade sees the addition of the KND-924-4 0.924 m dia front end and SAU-235 FADEC, pushing the engine to 18,320 lb (75.21 kN) dry and 29,180 lb (129.8 kN) wet thrust. The -M2 upgrade phase implements a new cooling system for the turbine stages, pushing the engine to 31,082 lb (138.26 kN) wet thrust. The third -M3 upgrade stage sees the addition of a three stage blisk technology KND-924-3 front end boosting the compression ratio from 3.55 to 4.2, and wet thrust to 32,186 lb, competitive against the latest US F100 and F110 variants. NPO Lyulka-Saturn's competing upgrade, including hot end changes, is to increase wet thrust to 31,473 lb (143.17 kN). Salyut and Klimov are also working on a second generation TVC nozzle design.

It is unclear when the 33,000 to 44,000 lbf class NPO Saturn-Lyulka AL-41F family will find its way into the Su-30 series. The AL-41F is the Russian equivalent to the F-22's F119-PW-100 engine, designed for supersonic cruise and improved performance across the full fighter envelope. Originally developed for the MiG MFI, the engine was built around the 'big bore' geometry already used in the AL-31F series, making it compatible with existing airframes.

The AL-41F is reported to have recently entered Low Rate Initial Production (LRIP) the intent being to equip the Sukhoi Su-34 Fullback which recently entered LRIP. In 2004 an Su-27M/Su-35 Flanker E was flown with the prototype AL-41F1, a derated variant of the baseline AL-41F, intended to increase the performance of the Flanker across all flgiht regimes, and enhance dry supersonic thrust (http://www.flightglobal.com/Articles/2004/03/23/179164/Su-27M+flies+with+power+upgrade.html). The derated AL-41F1 is claimed to deliver 33,000 lb (145kN) of SL static thrust.

這些都非我所長，謹供河裏大牛參考。

但這網站的結論是，除了F22之外，Su35是少有敵手。

Soviet and more recent Russian BVR doctrine has always emphasised firing pairs of missiles, one with heat-seeking guidance and one with radar guidance, to defeat countermeasures. With the option of active radar, heat-seeking and anti-radiation seekers, and by the end of the decade an imaging seeker, the result is a very lethal cocktail from a defensive countemeasures perspective - a defending fighter may only have datalink transmissions to provide warning and no indication of the seeker mix on the inbound missiles. With three of the four seeker technologies passive defeating such weapons is not trivial.

On publicly available data the JSF is likely to be detected and engaged by an N011M ESA equipped Su-30 inside the 10 to 20 nautical miles head on range envelope, unless the JSF can get the first shot off and successfully kill the Sukhoi. If the Sukhoi can close with the JSF, all bets are off on the JSF's ability to survive the close in engagement.

A view commonly heard in Canberra these days is that the use of the Wedgetail AEW&C to provide offboard targeting for the JSF will provide a decisive advantage over the Sukhois - 'Network Centric Warfare' will ostensibly offset all other deficiencies in the force structure and platform capabilities. This argument is clearly contingent upon a great many 'ifs' - if the Sukhois do not shoot very long range missiles at the Wedgetail to force it to shut down or indeed kill it, if the Wedgetail MESA is not jammed, if the JTIDS/MIDS or other datalinks to the fighters are not jammed, if the Sukhois are not carrying advanced IRSTs or X-band homing receivers, and if the Sukhois are not supported by HF or low VHF band radars.

If a JSF were deployed in 2005 with a supporting Wedgetail and existing Su-30 capabilities, then the argument probably holds most of the time. However, in a post 2010 environment it is most likely not going to hold up most of the time.