the large air brake, which is used in landing and in combat manoeuvres, is located on top of the fuselage.
The fixed weapon includes a GSh-301 30mm cannon fitted internally with 150 rounds of ammunition. The aircraft has ten external hardpoints (2 tandem under the fuselage centerline; 2 under the air ducts; 4 under the wings; 2 on the wingtips) to carry up to 8,000kg weapon payload.
For visual-range air-to-air combat, the Su-27 is equipped with the then revolutionary Vympel R-73 (NATO codename: AA-11 Archer) IR-homing short-range air-to-air missile. Coupled with the aircraft’s RLPK-27 helmet-mounted sight (HMS), the missile poses a serious threat to any modern fighter in close-in combats. For beyond-visual range (BVR) combat the aircraft is equipped with the R-27 (NATO codename: AA-10 Alamo) semi-active radar-homing medium-range air-to-air missile, in both long and short burn variants.
In a typical interception mission, the aircraft carries four R-73 and six R-27 missiles. Alternatively, the aircraft could carry two R-73 missiles, six R-27 missiles, and two KNIRTI SPS-171/L005 Sorbtsiya active jamming electronic countermeasures (ECM) pods on the wing-tips for self-defence.
The Su-27 was originally designed as an air-superiority/interceptor fighter, with ground attack only as a secondary role. The aircraft currently does not possess the capability of delivering precision-guided weapons. When used for ground attack missions, the Su-27 carries free-fall bombs and unguided rocket launchers. The PLAAF was frequently spotted using the Su-27 fighter this type of mission in exercise, a practice which would expose the expensive fighter unnecessarily in combat.
GSh-301 (150 rounds)
FAB-500/RBK-500 500kg bomb
FAB-250 250kg bomb
|AL-31F turbofan engine|
|Zhuk-ME Antenna at MAKS 2007|
The powerful airborne pulse-Doppler radar enables the aircraft to detect and simultaneously track up to ten air targets of the "tactical fighter" type at ranges of up to 120 km. The fighter is also armed with a state-of-the-art optronic fire control system comprising an infrared direction finder with a high-altitude effective range compared to that of the airborne radar, laser range finder, head-up display and helmet-mounted target designator sending virtually instant inputs into the missile homing heads as the pilot turns his head within a wide range of angles. The airborne radar operates in conjunction with the optronic fire control system to exchange the target designation data, which markedly improves the target detection probability and target tracking reliability, especially in enemy ECM environment. The WCS software enables the crew to identify air threats, classify each threat, and select the right weapon to destroy the air target that is the most dangerous in a given tactical situation.
Avionics. The avionics of the Su-27SK comprises an airborne radar, optronic fire control system, flight-navigation complex, ECM and communications facilities allowing the aircraft to perform its missions both during the day and at night, in all weathers and in the face of enemy ECM background. Compared to its main foreign counterpart, the F-15C "heavy" tactical fighter, the Su-27SK is on a par with the latter in avionics and surpasses it in composition and capability of the optronic fire control system. The Russian fighter's avionics offers an equal and, in some cases, better performance than similar European new-generation fighters.
The high effectiveness of the Su-27SK is largely due to its advanced weapon control system (WCS) assuring automatic all-aspect detection and tracking of air targets in a free space and against the earth background, engagement of the targets by its air-to-air missiles and gun fire from short and long distances, and destruction of ground targets by its unguided weapons.
FLANKER AT GLANCE
Max. military load (kg):
min. indicated speed: 200
Acceleration time at H=1000 (sec):
from speed 600 to 1100: 14.1
from 1100 to 1300: 9.8
14,7 x 21,9 x 5,9
Service seiling (m):
2 twin shaft DTRD- AL31-F2, 2 x 13'600 kgs
4 AA R-27 (R-27R, R-27T, R-27TE)
6 AA R-73
30 mm DP GSh-301
RBK cluster bombs (25, 500 kg)
retarded aerial bombs (100, 250, 500 kg)
unguided aerial missiles (C-8, C-25)
countermeas.: pilot illum.radar warning receiver (bearing data host.radar emissions, chaff and infra red decoy dispensers, active multirole jammer)
- optronic infra-red search and track sensor, laser range finder(40 -100 km range)
- jam-proof coherent pulse Doppler radar, Phazatron N001 Zhuk, with track-while-scan and look-down/shoot-down capability (range: target 3sq.m - 40/100 km; search, detect and track up to 10 targets with automatic threat assesment and prioritization)