Airframe and Aerodynamics
The Su-30MKI is a highly integrated twin-finned aircraft. The airframe is constructed of titanium and high-strength aluminium alloys. The engine nacelles are fitted with trouser fairings to provide a continuous streamlined profile between the nacelles and the tail beams. The fins and horizontal tail consoles are attached to tail beams. The central beam section between the engine nacelles consists of the equipment compartment, fuel tank and the brake parachute container. The fuselage head is of semi-monocoque construction and includes the cockpit, radar compartments and the avionics bay. Su-30MKIs also have a high percentage of composites used in the air-frame - rumoured to be 6% by weight.
The Su-30MKI aerodynamic configuration is an unstable longitudinal triplane. The canard increases the aircraft lifting effectiveness. It deflects automatically and allows high angle-of- attack flights. The integral aerodynamic configuration combined with thrust vectoring results in practically unlimited manoeuvrability and unique taking off and landing characteristics.
Stability and control are assured by a digital FBW. The canard notably assists in controlling the aircraft at large angles of attack (AoA) and bringing it to a level flight condition. The aircraft has a newly developed wing with increased relative thickness, accommodating a larger amount of fuel. The wing will have high-lift devices featured as deflecting leading edges and flaperons acting the flaps and ailerons. At subsonic flights, the wing profile curvature is changed by a remote control system which deflects the leading edges and flaperons versus the AoA (Angles of Attack).
The Su-30MKI will have a reinforced airframe in order to accommodate a weapons load of 17,650 lb (8,000 kg) compared with half that for the Su-30K, and the maximum takeoff weight is 38,800 kg versus 34,500 kg.
The term "super-maneuverability" was coined by Dr. Wolfgang Herbst, initiator of the USA's X-31 prototype program, in defining controllability up to 60° to 70° Angle-of-Attack with transients of 120° or more.
The Su-30MKI has no AoA limitations: it can fly at even 180 degree AoA and still recover. This high super-agility allows rapid deployment of weapons in any direction as desired by the crew. The addition of another seat means that the pilot is free to concentrate on flying the aircraft while the second pilot can engage targets.
Mikhail Simonov was stung by press criticism that this machine was appearing at airshows doing tailslides and Cobras without any underwing stores. So it was promptly fitted with a representative warload consisting of (from port wingtip) - AA-11, AA-11, AA-10, Kh-31P, 6 x OFAB-100-120 bombs on a MER fitted to the port lower intake, KAB-500KR on centreline pylon, Kh-29T on lower Stbd intake, Kh-59M, RVV-AE, AA-11, AA-11 and still did its full show routine! A similar performance was witnessed at an airshow where the Landing Gear could not retracted in a Su-37, but Yevgeny Frolov still went on do perform the show routine without any changes!
Planned for incorporation into the Su-30MKI fuselage on a progressive basis from 2006 through to 2017 on 114 of the 140 HAL-built Su-30MKI Mk3s are all-composite structures like wing spars and wing boxes, air intakes, fairing skins, fairing blocks, co-cured co-bonded fin and centre-fuselage components, elevators, rudder and its all-composite torque shaft, ailerons, belly fairings, landing gear doors, ceramic thermal barrier linings, and ceramic brake-pads. Interestingly, several such structures are currently being incorporated into the IAF's MiG-29B airframes as well.
Cockpit
The SU-30MKI employs extensive use of Sextant Avionique (now Thales Avionics) components in the cockpit. A total of 6 LCDs, 5 MFD-55s and 1 MFD-66 for displaying information and accepting commands are used. The six LCDs have a wide-screen, offer image-superimposing and are shielded to make them readable even in bright sunlight. All the flight information is displayed on these four LCD displays which include one for piloting and navigation, a tactical situation indicator, and two for display systems information including operating modes and overall operation status. The cockpit also retains some traditional dial displays as standbys.
There is some confusion regarding the HUD. While reports say MKI has VEH-3000 series Holographic HUD from Sextant Avionique, photographic evidence suggests Elbit Systems' SU 967. SU 967 has been designed for large cockpit fighter/attack aircraft and features a 28 degree FOV.
The aircraft is fitted with a satellite navigation system (A-737 GPS compatible), which permits it to make flights in all weathers; day and night. The navigation complex comprises of Thales Totem Inertial Directional System (INS) and short and long range radio navigation systems. It also has a laser attitude and a heading reference system. An automatic flight control system makes all phases of its flight automatic, including the combat employment of its weapons. Once the automatic flight control system receives information from the navigation system, it solves the route flight tasks - involving a flight over the programmed waypoints, the return to the landing airfield, making a pre-landing maneuver and the approach for landing down to an altitude of 60 meters, as well as uses the data supplied from the weapons control and radio guidance command systems to direct the aircraft to the target and accomplish the attack.
The communications equipment comprises secure VHF and HF radio sets, a secured digital telecommunications system, and antenna-feeder assembly. It mounts an automatic noise-proof target data exchange system, which provides for coordination of the actions of several fighter aircraft engaged in a group air combat. The voice radio communication with ground control stations and between aircraft is possible up to a range of 1,500 km in the Su-27SK, and the Su-30MKI should equal it if not better this. The Integrated Information System (IIS) allows the performance of a ground serviceability test of the entire equipment and the location of troubles to an individual plug-in unit. In case of an in-flight failure, the indicator of the integrated information system will provide the pilot with a text message about the failure and recommendations on how to correct it or will dictate further actions. The message is also duplicated by voice.
A two-pilot crew provides higher work efficiency (thanks to distribution of the aircraft handling and armament control functions) as well as the engagement in close and long range combats and the air situation observation. Besides, the same dual control aircraft can be used as a combat and training aircraft. Additionally, the integrated air-borne equipment enables the aircraft to be used as an air command post to control the operation of other aircraft.
In practice, the front seater is the pilot and the back seater is the "Wizzo", the WSO (Weapons Systems Operator). The pilot flies the aircraft and handles air-to-air and some ATG weapons, as well as countermeasures. The WSO takes care of the detailed aspects of navigation, ground radar mapping & target designation, setting up delivery solution for ATG weapons, designating for guided bombs/missiles, ECM, and so on. There are many tasks which overlap; either pilot or WSO can do the job depending on circumstances. The aircraft can be flown from either seat, however only the front cockpit driver can operate the helmet mounted sight (Sura) as sensors are only in the front. The rear cockpit has a HUD repeater.
The crew are provided zero-zero KD-36DM ejection seats which have a slightly modified comm/oxygen interface block compared to the Su-27. Rear seat is raised for better visibility. The cockpit will be provided with containers to store food and water reserves, a waste disposal system and increased amounts of oxygen. The KD-36DM ejection seat is inclined at 30º, to help the pilot resist aircraft accelerations in air combat.
Flight Control and Other Avionics
For flight control, reliability and survivability, the aircraft has a FBW with quadruple redundancy. Depending on the flight conditions, signals from the control stick position transmitter or the automatic FCS will be coupled to the remote control amplifiers. Upon updating, depending on the flight speed and altitude, these signals are combined with feedback signals fed by acceleration sensors and rate gyros. The resultant control signals are coupled to the high-speed electro-hydraulic actuators of the stabilizers, rudders and the canard. For greater reliability, all the computers work in parallel. The output signals are compared and, if the difference is significant, the faulty channel is disconnected.
An important part of the FBW is based on a stall warning and barrier mechanism with an individual drive of its own. It prevents development of aircraft stalls through a dramatic increase in the control stick pressure. This allows a pilot to effectively control the aircraft without running the risk of reaching the limit values of AoA and acceleration. The stall control is accomplished by the computer of a signal limiting system, depending on the configuration and loading of the aircraft. The same system sends voice and visual signals, as the aircraft nears a stall condition.
An oft criticised aspect of Russian aircraft in general is their 'poor' servicebility. This is more of a perception, and in capable hands they can return more than satisfactory performance. The Su-30MKI does add some new features regarding this, including self-diagnostic software that will indeed make life a lot easier for the airmen!
For acquiring predictive maintenance capability, the IAF and Rosoboronexport FSUE have joined forces with South Africa 's Aerospace Monitoring And Systems (Pty) Ltd (AMS). Predictive maintenance means the on- and off-board processing of aircraft sub-systems data, resulting in an accurate, conclusive indication of the health and usage status of various airborne systems. The Su-30MKI Mk3's on-board health-and-usage monitoring system (HUMS) not only monitors almost every aircraft system and sub-system, including the avionics sub-systems, it can also act as an engineering data recorder. For the Su-30MKI Mk3, AMS was contracted for providing total HUMS solutions, starting with definition of the IAF's qualitative requirements, followed by systems provision (development and implementation), integration and support phases.
Methods have since been co-developed by AMS and the IAF for the following:
fatigue loading spectra;
fatigue analysis methods;
material fatigue behaviour;
fracture mechanics;
damage tolerance analysis and testing of redundant metallic aircraft structures;
fatigue crack growth analysis;
crack growth, residual strength analyses
aircraft structural integrity programmes;
ageing aircraft issue.
Indian Contribution
The Su-30MKI contains not only Russian, French, South African and Israeli Customer Furnished Equipment (CFE), but also a substantial percentage of Indian designed and manufactured avionics. They took six years to develop from start to MKI. Advanced avionics were developed by DRDO under a project code named "Vetrivale" (a Tamil name for the victorious lance carried by the youthful Lord Karthikeya or Murugan, a son of Parvati and Shiva) in close collaboration with the PSUs and the IAF. Indian avionics have been received and acknowledged enthusiastically by the Russian principals.
The following are the components developed by Indian agencies:
Mission Computer cum Display Processor - MC-486 and DP-30MK (Defence Avionics Research Establishment - DARE)
Radar Computer - RC1 and RC2 (DARE)
Tarang Mk2 Radar Warning Receiver (RWR) + High Accuracy Direction Finding Module (HADF) (DARE
IFF-1410A - Identification Friend or Foe (IFF)
Integrated Communication suite INCOM 1210A (HAL)
Radar Altimeter - RAM-1701 (HAL)
Programmable Signal Processor (PSP) - (LRDE)
Multi Function Displays (MFD) - Samtel/DARE
The 32-bit Mission Computer performs mission-oriented computations, flight management, reconfiguration-cum-redundancy management and in-flight systems self-tests. In compliance with MIL-STD-1521 and 2167A standards, Ada language has been adopted for the mission computer's software. The other DARE-developed product, the Tarang Mk2 (Tranquil) radar warning receiver, is manufactured by state-owned BEL at its Bangalore facility.
These avionics equipment have also been certified for their airworthiness in meeting the demanding standards of Russian military aviation. The cumulative value of such indigenous avionic equipment is estimated to exceed 250 lakhs per aircraft. Since the core avionics were developed by a single agency (DRDO) - they have significant commonality of hardware and software amongst them using a modular approach to design. This obviously results in major cost and time savings in development; it also benefits the user in maintenance and spares inventories.
The DRDO has gone a step further and come out with a new design of the Core Avionics Computer (CAC) which can be used with a single module adaptation across many other aircraft platforms. Thus the CAC which is derived from the computers designed for the Su-30MKI will now be the centre piece of the avionics upgrades for the MiG-27 and Jaguar aircraft as well. The CAC was demonstrated by DRDO at the Aero India exhibition at Yelahanka and attracted a good deal of international attention. Taken together with the systems already developed indigenously for the LCA (such as the Digital Flight Control Computer and HUD), clearly Indian avionics have a significant export potential in the burgeoning global market for avionics modernisation.
The navigation/weapons systems from the various countries were integrated by Ramenskoye RPKB.
HAL will supply components to Irkut for 300 Su-30s meant for export to Malaysia and Algeria apart from those meant for IAF.
Radar
The forward facing NIIP NO11M Bars (Panther) is a powerful integrated radar sighting system. The N011M is a digital multi-mode dual frequency band radar (X and L Band, NATO D and I). The N011M can function both in air-to-air and air-to-land/sea mode simultaneusly while being tied into a high-precision laser-inertial / GPS navigation system. It is equipped with a modern digital weapons control system as well as anti-jamming features. The aircraft has an opto-electronic surveillance and targeting system which consists of a IR direction finder, laser rangefinder and helmet mounted sight system. The HMS allows the pilot to turn his head in a 90º field of view, lock on to a target and launch the much-feared R-73E missile. The Sura-K HMS for the Su-30MKI has been supplied by the Ukranian Arsenal Company (the same also makes the APK-9 datalink pod for the Kh-59M).
The N011M radar has been under flight testing since 1993, fitted to Su-27M (Su-35) prototype '712'. It employs the same level of technology as the now abandoned N014 radar which was to have equipped Mikoyan's MFI "fifth-generation" fighter and was initiated by Tamerlan Bekirbayev. The nose of the Su-30MKI was modified (compared the Su-27) to accommodate the fixed antenna array and more avionics boxes. The first improved N011M radar for the Su-30MKI was flown on 26-Nov-2000. Note that the N011M is different from the N011 "Mech" radar: the latter is mechanical scanning and equips the No 24 Sqn aircraft.
Antenna diameter is 1m, antenna gain 36dB, the main sidelobe level is -25dB, average sideobe level is -48dB, beamwidth is 2.4 deg with 12 distinct beam shapes. The antenna weighs 100kg
N011M Bars
For aircraft N011M has a 350 km search range and a maximum 200 km tracking range, and 60 km in the rear hemisphere. A MiG-21 for instance can be detected at a distance of up to 135 km. Design maximum search range for an F-16 target was 140-160km. A Bars' earlier variant, fitted with a five-kilowatt transmitter, proved to be capable of detecting Su-27 fighters at a range of over 330 km. The radar can track 20 air targets and engage the 4 most threatening targets simultaneously (this capability was introduced in the Indian RC1 and RC2). These targets can include cruise/ballistic missiles and even motionless helicopters. For comparison, Phazotron-NIIR’s Zhuk-MS radar has a range of 150-180km against a fighter and over 300km against a warship. "We can count the number of blades in the engine of the aircraft in sight (by the NO11M) and by that determine its type," NIIP says.
The forward hemisphere is ±90º in azimuth and ±55º in elevation (+/-45 degrees vertical and +/-70 degrees horizontal have also been reported). N011M can withstand up to 5 percent transceiver loss without significant degredation in performance.
The Su-30MKI can function as a 'mini-AWACS' and can act as a director or command post for other aircraft. The target co-ordinates can be transferred automatically to atleast 4 other aircraft. This feature was first seen in the MiG-31 Foxhound, which is equipped with a Zaslon radar.
Radar Computers
Purpose
> Facilitate automatic PRF selection of hostile targets moving at blind speeds
> Enhance tracking capability to 8 targets
Characteristics
> 486 main processor
> 386 Summit processor
> ARINC 429 Interface
> Dimensions 32cm x 19cm x 19cm
> Weight 14 kg each
RC1 Functions
> Interfaced to MCDP through ARINC and MIL-1553 BUS
> Interfaced to RC2 via high speed parallel Q bus
> Processes radar input and passes results to mission computer
RC2 Functions
> Interfaced to PSP
> Interfaced to various radar devices and combat computer via Q bus
Ground surveillance modes include mapping (with Doppler beam sharpening), search & track of moving targets, synthetic aperture radar and terrain avoidance. To penetrate enemy defenses, the aircraft can fly at low altitudes using the terrain following and obstacle avoidance feature. It enables the pilot to independently find his position without help from external sources (satellite navigation, etc.); detect ground targets and their AD systems; choose the best approach route to a target with continuous updates fed to the aircraft navigation systems; and provide onboard systems and armament with targeting data.
According to Sukhoi EDB the Su-30MKI is capable of performing all tactical tasks of the Su-24 Fencer deep interdiction tactical bomber and the Su-27 Flanker A/B/C air superiority fighter while having around twice the combat range and atleast 2.5 times the combat effectiveness.
The N011M offers a quantum leap in technology over the earlier Russian radars. Small ground targets, like tanks, can be detected out to 40-50 km. The MiG-29, Su-27 and other fighters can be provided with a ground strike capability only if their radars can operate in the down-looking mode which generates a map of ground surface on a cockpit display (this mode is called the Mapping Mode).
N011M ensures a 20 m resolution detection of large sea targets at a distance up to 400 km, and of small size ones - at a distance of 120 km. Coupled with the air-launched Brahmos-A AShM, the Su-30MKI will become an unchallanged platform for Anti-Ship duties. The Brahmos is a result of a joint collaboration between India and Russia and is a variant of the Yakhont AShM (which has not entered service).
N011M Bars supplied to the IAF have progressively updated capabilities. Future upgradation plans include new gimbals for the antenna mount to increase the field of view to about 90-100 degrees to both sides. New software will enable a Doppler-sharpening mode and the capability to engage up to eight air targets simultaneously. Additionally the capability of the world-best PJ-10 Brahmos missile will be incorporated. The Air launched version of the missile 'Brahmos-A' requires modifications to the airframe due to high weight. As many as three can be carried on the MKI, but only if the weight of the missile can be reduced. Untill then a capability to carry one Brahmos and two Krypton ("mini moskit") missiles is being worked on.
Aircraft Radar Remarks
Su-30MKI Phase-I N011M Mk.1
> Only Air-to-Air modes
Su-30MKI Phase-II N011M Mk.2
> Ability to engage targets with four R-77
> Ground mapping
> Ground/Sea target search and lock
> Integrated with Kh-31A and Kh-59ME
Su-30MKI Phase-III N011M Mk.3
> Russian C101 radar computer replaced by Indian processor.
> Ground attack mode with simultaneus air target search
> Integration with Rafael Litening pod
Su-30MKI N011M
> 2007 debut
> New gimbals for the moving antenna: +/-100 degrees azimuth & elevation
> New computer: 180 km tracking range
Weapons and related Avionics
The Su-30MKI combat load is mounted on 12 stations. The maximum advertised combat load is 8000 kg (17,600 lbs). All compatible Russian/Soviet AAMs and AGMs are available to the IAF, which infact has quite a large variety of these weapons. The RVV-AE is not being inducted into the Russian Air Force but have been bought by the IAF. The aircraft features the built-in single-barrel GSh-301 gun (30 mm calibre, 150 rounds).
Indian designed and manufactured Astra BVRAAM is planned for integration with the aircraft. India and Russia are exploring integration of long range AAM KS-172 as well.
Over 70 versions of guided and unguided weapon stores may be employed, which allows the aircraft to fly the most diverse tactical missions. Speculation is that the Su-30 can also carry a tactical nuclear payload, though only Jaguar and Mirage aircraft are known to be equipped for the role thus far.
The laser-optical locator system is advertised to include a day and night FLIR capability and is used in conjunction with the Helmet mounted sighting system. The Laser Guided Munitions will be employed in conjunction with the Rafael Litening pod. The APK-9 datalink pod is associated with the Kh-59ME.
The OLS-27 (Izdeliye 36Sh) is a combined IRST/LR device for the Su-27, similar to the MiG-29's KOLS but more sophisticated, using a cooled, broader waveband, sensor. Tracking rate is over 25deg/sec. 50km range in pursuit engagement, 15km head-on. The laser rangefinder operates between 300-3000m for air targets, 300-5000m for ground targets.
Search limits for the OLS-27 are ±60deg azimuth, +60/-15° in elevation. Three different FOVs are used, 60° by 10°, 20° by 5°, and 3° by 3°. Detection range is up to 50km, whilst the laser ranger is effective from 300-3000m. Azimuth tracking is accurate to 5 secs, whilst range data is accurate to 10m. Targets are displayed on the same CRT display as the radar. Weighs 174kg.
The OLS-30 (36Sh-01), is an improved version of OLS-27 developed by UOMZ with a vibration-proof receiver, micro-cryogenic system, improved service life and new software. Perhaps also has TV channel. Range 90km in pursuit, 40km head-on. Possibly the same as Izdeliye-52Sh.
Air-to-Air Missiles - Maximum Pcs
R-27R1 06
R-27P 02
R-27T1 02
R-73 06
RVV-AE 06
Air-to-Surface Missiles - Maximum Pcs
Kh-59ME 02
Kh-31P, Kh-31A 04
Kh-29T(TE) 06
Kh-L 06
Guided/Smart Bombs - Maximum Pcs
KAB-500KR, KAB-500 OD 06
KAB-1500KR, KAB-1500L 03
Unguided Projectiles - Maximum Pcs
S-8KOM, S-80M, S-8MB 04 blocks (80 pcs.)
S-13T, S-13OF 04 blocks (20 pcs.)
S-25 OFM-PU 04
Unguided/Dumb Bombs - Maximum Pcs
FAB-500T 08
BETAB-500ShP 08
ODAB-500PM 08
OFAB-250-270 28
OFAB-100-120 32
P-50T 32
RBK-500 bomb clusters with PBE-D 08
Incendiary tanks 3B-500
Other - Maximum Pcs
APK-9 (Datalink Pod) 01
UPAZ-1 (IFR Pod) 01
Elta EL/L-8222 (RF Jammer) 01(?)
Kh-31P - Su-30MKI - @0 Sqn
A Su-30MKI in service with the 20 Sqn sports a live Kh-31P. (Jane's/Simon Watson)
ECM/Self Defence
An integrated ECM system turns on the warning units that provide signals about incoming enemy missiles, a new generation radio recon set, active jamming facilities and radar & heat decoys. It also includes an electronic intelligence unit, a chaff and flare dispenser and a RWR system. The RWR system is an indigenous product developed by DRDO called Tranquil (Tarang Mk2). Tarang is already deployed in IAF MiG-21 Bison and MiG-27ML fighters. Phase-I and Phase-II aircraft have SPO-32 (L-150) Pastel radar-warning receivers and no RF jammers. Latest aircraft are compatible with the Elta EL/M-8222 EW pod and so are the older Su-30MK/Ks.
Official Sukhoi Literature
Engines and Fuel System
The Su-30MKI is powered by the Al-31FP (P for povorotnoye meaning "movable"), which is a development of the Al-37FU (seen in the Su-37 Terminator).
AL-31FP which is designed by the Lyulka Engine Design Bureau (NPO Saturn) is also different from Al-31F (by the same company). The Al-31F is the 'baseline' powerplant found in most Su-27 and its variants, and perhaps in the China's J-10 in the future and lacks TVC. The AL-31FP was only 110Kg heavier and 0.4 m longer than the AL-31F, while the thrust remains the same. Planes equipped with AL-31F can be upgraded to AL-31FP later on without any changes in the airframe. It is being produced now at the Saturn manufacturing facility at Ufa, Russia.
The Al-37FU (FU stands for forsazh-upravlaemoye-sopo or "afterburning-articulating/steerable-nozzle") basically added 2D Thrust Vectoring Control (TVC) Nozzles to the Al-31F. 2D TVC means that the Nozzles can be directed/pointed in 2 axis or directions - up or down. TVC obviuosly makes an aircraft much more maneuverable. Al-31FP builds on the Al-37FU with the capability to vector in 2 planes i.e. thrust can be directed side-ways also. The nozzles of the MKI are capable of deflecting 32 degrees in the horizontal plane and 15 degrees in the vertical plane. This is done by angling them inwards by 15 degrees inwards, which produces a cork-screw effect and thus enhancing the turning capability of the aircraft.
The TVC nozzles will be made of titanium to reduce the nozzle's weight and can deflect together or differentially to achieve the desired thrust vector for a particular maneuver. The engine designers are also working to reduce the infrared signature for thrust settings below afterburner.
Also, the 2-nozzles can be vectored un-symmetrically, i.e. each nozzle can point at different directions independent from the other nozzle and thus multiplying the effect.The aircraft is capable of near-zero speed airspeed at high angles of attack and super dynamic aerobatics in negative speeds up to 200 km/h.
When at rest, the Al-31FP nozzles point inwards - as is visible above
TVC allows the MKI for example, to rapidly loose speed and turn in any direction and fire its weapons. The complete range of maneuveres possible in the MKI are impossible on any other combat fighter in production. "We even made a corkscrew spin a controllable manoeuvre - the pilot can leave it at any moment by a single motion of the stick that engages thrust-vectoring and aerodynamic surfaces," says Sukhoi's earlier general designer Mikhail Simonov.
Two AL-31FP by-pass thrust-vectoring turbojet reheated engines (25000 kgf full afterburning thrust) ensure a 2M horizontal flight speed (a 1350 km/h ground-level speed) and a rate of climb of 230 m/s. The Mean Time Between Overhaul (MTBO) for the AL-31FP is given at 1,000 hours with a full-life span of 3,000 hours. The titanium nozzle has a MTBO of 500 Hrs.
The Al-31FP improves upon the Al-37FU in two ways:
Firstly, the Al-37FU cannot vector thrust in 2 planes unlike the Al-31FP.
Secondly, the nozzle drive connection is effected now from the aircraft fuel system and not from the aircraft's hydraulic system. The change-over to the fuel system, to control swiveling nozzles, enhances the dependability of the aircraft and its survivability in air combat.
There is no a strain-gauge engine control stick to change the engine thrust in the cockpit, rather just a conventional engine throttle control lever. The pilot controls the aircraft with help of a standard control stick which is positioned between his legs. On the pilot's right there is a switch which is turned on for performing difficult maneuvers. After the switch-over, the on-board computer determines the level of use of aerodynamic surfaces and swiveling nozzles and their required deflection angles.
Saturn/Lyulka General Designer Victor Chepkin confirmed to Piotr Butowski (Jane's) that work on a three-dimensional (axisymmetrical) TVC nozzle was underway but that it was not planned for the Su-37 in the immediate future. Other future engines from Saturn are Al-31FN and Al-41.
The Su-30MKI has a large range of 3,000 km without refueling which allows for autonomous operations that require high endurance. Also, an inbuilt In-Flight Refueling (IFR) probe that is retracted beside the cockpit during normal operation. The IAF has placed an order for six IL-78MKI Midas refueling aircraft. As of June 2003, the first IL-78MKI had been delivered to the IAF under the newly raised 78 Sqn. Another one was delivered within the next few months.
A picture from the Air Force Day 2003 celebrations
A normal fuel load of 5270 kg ensures a 4.5 hour combat mission, and the air refuelling system increases the flight duration up to 10 hours with a range of 8000 km at a cruise height of 11 to 13 km. Thus the endurance of the aircraft is limited solely by the human factor, hence the logic of going for a twin-seat fighter. Prior to the arrival of the IL-78MKI, the average duration of sorties was 1.54 hours varying from a maximum of 2.08 to a minimum of 1.45 hours*. Since the arrival of the IL-78MKI, IAF pilots have flown 10 Hr missions over the Andaman and Nicobar Islands from Pune.
Interestingly, the total time spent in air combat manoeuvre varied from a maximum of 22.04 minutes to a minimum of 4.01 minutes, with an average of 14.04 minutes. In percentage figures, in long duration sorties, the pilot spent 12.5 percent of the time on ACM as compared to the total duration of the sortie. These figures are from studies conducted in 1998 on the un-upgraded Su-30MK variants.
The IAF in co-operation with the Defence Food Research Laboratories (DFRL) has designed "inflight meals" to provide nutrition to pilots flying long duration missions. IAF's Institute of Aerospace Medicine (IAM) personnel like Wg Cdr CK Ranjan and Wg Cdr AD Upadhyaya worked on these meals and their storage. The Mysore-based DFRL has developed nutritious coconut water and pineapple juice, besides ready to eat food like sooji halwa, ribbon and cheese sandwich and mince meat rice, packed specially for high endurance aircraft. The food is nutritiuos and is easy to eat in the cockpit environment, and the pilots can choose their meal.
Engines manufactured were adapted under the grades of fuel used in India.
Tactics
Many wrongly believe that the Su-27+ cannot perform all maneovres in combat load. To counter such talk designer Mikhail Simonov, at the 1994 Farnborough airshow, sanctioned a Su-30MK to perform the airshow routine with ordnance on all 12 pylons - a total of 7000 kg!! It did a complete fighter-like routine with this asymmetric load - including a tail slide!!.
In-Close, Stay-Close, and Kill-Close strategy is a way defeat the new generation of all-aspect, high-off-boresight missiles such as the R-73, Python 4, MICA-IR, and AIM-9X. Obviously one has to survive the transit from beyond visual range (BVR), to within visual range (WVR), to inside of minimum range. Once there however, both Western and Russian gun systems are capable of all-aspect, high crossing angle kills at ranges inside of 1500 feet.
Russian designers have stated that they believe that the key to dogfight supremacy rests in the pilot's ability to engage the enemy in any position relative to their own aircraft. While TVC permits post-stall maneuvering and pointing which are impossible in conventional aircraft, they are convinced that a rearward facing radar and missiles that can be fired in the aft-quadrant all join to make an unbeatable integrated weapons system.
In the News
Servicability. In September 2003 and again in December of the same year, the local media reported that some of the AL-31F turbofans had to be overhauled prematurely, after completing an average of "700 Hrs", instead of the advertised 1000. The cause of this was described as "nicks" in the turbofan blades, and the whole squadron was reported to be completely "grounded". The IAF dismissed these allegations as only rumours, but admitted that some engines had developed these problems in their blades. Unfortunately, the accuracy of media reporting can be questioned considering that simultaneusly aircraft were appearing all over the country for aerobatic events in public events! In various interviews, IAF Chief ACM Krishnaswamy rejected the media reports as cynicism and stressed that blade nicks, which appear due to pebble ingestion, do happen and there is nothing unusual and specific to the sukhois. There were accompanying rumors that the IAF had even refused to accept a batch of SU-30MKI production, which were simply untrue.
Su-30MKM. In 2003 Malaysia signed up for the delivery of 18 Su-30MKMs for their air force. The Su-30MKM, also to be manufactured by Irkut Corporation, is described as being identical to the MKI, but lacks the Israeli components, replaced instead by French avionics are included. Irkut has also subcontracted the task of manufacturing the canards, stabalisers and fins to HAL. This contract is valued between 25 to 30 Million USD for HAL. These composite parts will be manufactured at HAL Nasik.
An eight-member Royal Malaysian air force team, led by the director of operations, major general Dato Azizan Bin Ariffin, visited the Lohegaon air force base in August 2003, to familiarise themselves with the training and maintenance activities of the advanced Sukhoi-30 MKIs. Training of RMAF personnel is expected to start in 2006 (the contract is yet to be signed [4]). This is not the first time, however, that the IAF has offered assistance to RMAF. During 1994-95, IAF had conducted ground training on MiG-29 aircrafts for their Malaysian counterparts
Su-30 for Algeria. Russia has been contracted by Algeria to supply 28 Su-30 fighters to Algeria. While the configuration is not known, Algeria reportedly wants it to match Su-30MKI standard. Consequently some business is expected to come to Indian avionics manufacturers [3].
Exercises with other Air Forces. In Feb 2004, an IAF-USAF DACT camp was held at Maharajpur AFS, Gwalior. Titled "Ex Cope India 2004"; it was the first time F-15s and Flankers faced off with each other under the public eye. The results were, much to the surprise of many, were heavily in the IAF's favour. Read more about this watershed event elsewhere on this site. Article and here. Since then Su-30MKIs have also exercised with Republic of Singapore Air Force (RSAF) F-16s (Ex Sindex) and USAF F-16s (Ex Cope India 2005).
Brahmos Missile. The Brahmos missile is the world's most lethal AShM. It is capable of low altitude flying at supersonic speeds with maneuvering to defeat defences. Both Air-to-Surface and Air-to-Ship versions are being developed for the IAF. The first trial of the aircraft version of BrahMos will be conducted before December 2007. Only a limited number of aircraft will be modified to carry this missile.
The Su-30s seem to have captured the nation's imagination; they are a favorite of the media and anybody interested in military matters. Public appearences are frequent - both in flypasts as well as static display. And everytime the public is left spellbound. It is should not come as a surprise, that the Su-30MKI has virtually become the mascot of the Indian Air Force and will continue to be one for the coming decades.
Dimensions and Weights
Dimensions
Length 21.9 m
Span 14.7 m
Height 6.4 m
Take-off Weight
Normal 24900 kg
Maximum 38800 kg
Fuel weight, (spec. weight 0.785 g p cu. sm) kg
Normal 5270 kg
Maximum 9640 kg
Other
Max takeoff run with a normal takeoff weight (afterburner) 550 m
Max landing run with a normal landing weight, with a drag parachute 750 m
Max operating overload 9 g
