Su-35. Unsuccessful improvement
Work on the modernization of the Su-27 began in the middle of the 80s, almost immediately after the start of series production. The improved machine was different from the original digital wire system (EDSU), radar and more powerful set of weapons, including guided weapon "air-to-surface" (the basic Su-27 missiles carried only "air", and to strike the earth could unguided munitions only). Missiles "air-to-air" P-27 is also planned to change the promising RVV-AE.
Cockpit of the Su-27M (such index was initially refreshed fighter) was intended to equip the functional monitors. And changed the look of a fighter — Su-27M was a frontal horizontal tail. The radius of the acts of the Su-27M was expected to increase due to the use of in-flight refueling (absent on the base car) and mounted fuel tanks.
Tests of Su-27SM began in 1988. In April 1992, the air got the first serial model fighter received index Su-35, but high-volume creation was never deployed. In total, in 1992-95 the Russian Air Force received 12 aircraft of this type, used for various tests and demo flights.
Then, based on the Su-35 was designed Su-37 (not to be confused with the experimental machine S.37/Su-47!). From the original Su-37 was different priemuschestvenno introduction of engines with thrust vector control. The car is also popular as the "711 board" made a splash thanks to its own outstanding maneuverability, but remained in one piece.
"Second coming" of the Su-35 began in the late '90s, when the updating of the Russian Air Force fleet has been put back. For the latest machine was decided to keep the index of the Su-35, and to distinguish it from the first "May 30-Ogo" to the index from time to time add the abbreviation BM ("Big Modernization"). Unlike the first SU-35, the newcomer machine across the face of virtually indistinguishable from the Su-27 — Front horizontal tail is missing.
According to the concept — deeply modernized plane based on the same design — Su-35BM is a twin of the South American fighter Super Hornet, but great aerodynamic properties of the airframe of the Su-27 have allowed to keep machine type, unlike F/A-18E/F, which by comparison with the originals — F/A-18C / D — were very very recycled.
In addition, the new aircraft from the ground up with the "export" an eye — Su-35BM was a candidate to become the Su-30 and replace it by the maximum performance and features on-board equipment to abandon the second member of the crew. It is clear that the design of the aircraft was spent part of the money gained from exports of machinery Sukhoi zabugornom buyers.
Brand new car has a reinforced airframe, but by facilitating on-board radio equipment dry weight of the aircraft is actually no different from the Su-27 — 16.5 tons. Strengthening the airframe, in turn, allowed to increment the greatest take-off weight of the machine to 38.8 tons. Increased take-off weight has significantly increased in store fuel — in internal tanks Su-35BM is 11.5 tons compared to 9.4 on the Su-27. In addition, Sou-35 can be used mounted fuel tanks, which are in store with the introduction of fuel rises to 14.5 tonnes. Just as first Sou-35, Su-35BM equip-flight refueling system.
The main difference of the Su-35 from predecessors is the introduction of new engines — developed by NPO "Saturn" engines 117S is a deep modernization of the AL-31F unique, differing from their over-draft, and a huge resource efficiency. In addition, the new engines have thrust vector control, which ensures the Su-35 a higher mobility compared with progenitor.
The new Su-35 was, after all, a radar with a phased antenna array "Irbis" significantly enhance the combat ability of the aircraft. The fire control system allows the Su-35 to accompany 30 air targets at once and fire eight of them. Detection range of 400 km achieves goals. "Invisible", built with the introduction of "stealth" technology, the new radar is capable of detecting up to 90 km.
The combat load of the Su-35BM has remained such as the Su-27 — 8 tons. Number of suspension assemblies increased from 10 to 12. Weapon control system allows the aircraft to use virtually all modern guided and unguided munitions Russian production, except languid bombs and missiles, designed for use by strategic bomber aircraft.
The first flight of the Su-35BM (with engines AL-31FU) was demonstrated in 2007. In 2008, must take to the air of the Su-35 117S with engines that will allow municipalities to begin testing machine. The 2006 municipal programm weapons in the years 2006-15 provides for the creation of a batch of Su-35 for the Russian Air Force.
In addition, the improvements that are included in the design of the Su-35 will be used for the modernization of the existing Su-27 and the standard CM2. As well as creating a batch of Su-35, Su-27 upgrade on this pattern will begin after completion of the test the new plane — in 2009-10. At the current time, as you know, the Su-27 are improved by the project of the Su-27SM.
Su-27 (in parentheses different data Su-35BM)
# Wingspan — 14.7 meters
# Length — 21.9 m
# Height — 5.9 meters
# Wing area — 62.00 m2
# Empty weight — 16.3 (16.5) tons
# Normal take-off weight — 22.5 (25.5) tons
# Maximum take-off weight — 30 (38.8) tons
# Power plant — 2 THD AL-31F engine with a thrust face / afterburner 7.5 / 12.5 tons (2 THD 117C, with afterburning thrust of 14.5 tons and thrust vector control)
# Maximum speed at altitude — 2500 (2600) km / h
# Cruising speed — 1000 km / h
# Radius acts independently of load and flight profile — from 800 to 1600 (up to 2000) km
# Service ceiling — 18,500 feet
# Maximum operating load — 9g
# Crew — 1 person
# Weapons — built: January 30-millimeter gun GSH-301. Attachments: up to 8 tons of weapons on 10 sites outside of suspension (up to 8 tons at 12 knots suspension).