JF-17 Vs LCA Tejas - Page 6




 
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January 17th, 2015  
ROCKERPUSS
 
 














F404-GE-IN20
Dimensions: Diameter 890 mm, Length 3.9 m
Weights: Max Weight 1,035 kg (2,282 lb)
Engines Performance: Thrust 9,163 kg (20,200 lb)

Tejas is a Light Combat Aircraft that uses fourth generation technologies. It is built from composite materials, has unstable aerodynamics and is controlled using a fly-by-wire system. Tejas incorporates an advanced glass cockpit.

Tejas is equipped with a quadruplex digital fly-by-wire flight control system to ease handling by the pilot. The digital FBW system of the Tejas employs a powerful digital flight control computer (DFCC) comprising four computing channels, each with its own independent power supply and all housed in a single LRU. The DFCC receives signals from a variety of sensors and pilot control stick inputs, and processes these through the appropriate channels to excite and control the elevons, rudder and leading edge slat hydraulic actuators. The DFCC channels are built around 32-bit microprocessors and use a subset of the Ada programming language for software implementation. The computer interfaces with pilot display elements like the MFDs through MIL-STD-1553B multiplex avionics data buses and RS-422 serial links.
Tejas is intentionally made longitudinally unstable to enhance maneuverability. The Control laws (CLAW) recover Stability and provide good Handling Qualities to the Pilot. They also provide invariant response with respect to variation in aerodynamics, fuel etc. and facilitate robust performance. The CLAW is carefree and ensures that various aircraft parameters are limited automatically. This enables the pilot to fly the mission without worrying about exceedence of parameters beyond a safe limit.

The autopilot provides pilot relief functions. This helps the pilot to do more head down activities (especially mission critical activities) without being concerned about the aircraft departing from its flight path. The autopilot is also equipped with advanced features like auto level (which helps the pilot recover the aircraft if he gets disoriented and also during night flying), safe altitude recovery (which automatically pulls up the aircraft if it comes too close to the ground) and navigation modes (which steer the aircraft automatically along a pre-determined flight path).

The Tejas is a tailless, compound delta platform. This platform is designed to keep the Tejas small and lightweight. The use of this platform also minimizes the control surfaces needed (no tail-planes or fore planes, just a single vertical tailfin), permits carriage of a wider range of external stores, and confers better close-combat, high-speed, and high-alpha performance characteristics than conventional wing designs. Extensive wind tunnel testing on scale models and complex computational fluid dynamics analyses have optimized the aerodynamic configuration of the LCA, giving it minimum supersonic drag, a low wing-loading, and high rates of roll and pitch.



The coherent pulse-Doppler Multi Mode Radar is designed to operate equally effectively in the Air to Air and Air to Surface domains. Jointly developed as an Indian – Israeli venture, it features multi-target Air to Air Track, Hi Resolution Synthetic Aperture Mapping and specialized Air to Sea modes. The radar facilitates all weather employment of a variety of Air to Air and Air to Surface Weaponry, and is the primary targeting sensor on the Tejas.

Open Architecture Computer (OAC) designed and developed by ADA, combines the functions of earlier mission computer, display processor, video switching unit and mission preparation and retrieval unit. It is designed based on open system interfaces standards, which provides interoperability, scalability, and portability. OAC drives three multi-function displays, HUD and the helmet-mounted display. This open architecture design will allow the designers to continuously adapt and upgrade Tejas to meet the challenges of modern warfare.



WEAPONS: MRAAM, SRAAM, LDP, BOMBS, LASER GUIDED BOMB(LGB), LDP, RECCE.





Tejas incorporates a highly reliable quadruplex digital fly-by-wire Flight Control System. The new generation glass cockpit comprises Multi Function Displays (MFD), Head Up Display (HUD) and Stand by Instrumentation System driven by Open Architecture Mission and Display Computer. This provides effective Human Machine Interface (HMI).The advanced utility and health management system provides system health and warnings to the pilot through a Open Architecture Computer (OAC).



During 'Initial Operational Clearance of Tejas'
Indian Defense Minister Mr. A.K Antony's Address
20th December 2013
I am happy to be in your midst for this momentous occasion, that is attaining the Initial Operational Clearance of the nation's own multi-role fighter aircraft.
Several organizations have worked together to enhance the national security through self-reliance by building this Indian Combat aircraft. Aeronautical Development Agency, along with HAL was the principal design and production partner. Many other agencies like DRDO laboratories, Indian Air Force, CSIR labs, defence PSUs, DGAQA, private industries and academia too have made a valuable contribution to this endeavour.
During the last three years, the capabilities of the aircraft have been improved significantly. In recognition of the enhanced capabilities, IAF has decided to grant the aircraft a higher status, namely the Initial Operational Clearance for induction into the service.
The improvements to the aircraft have enhanced the flight envelope of the aircraft and also weapon delivery capability of the aircraft. The performance at Iron Fist, Jaisalmer and the recent missile firing at Goa are examples of such improvements. The reliability of the aircraft and serviceability has also been enhanced. The number of flights nearing 500 within this year provides and indication of this. Operating at IAF bases namely Jamnagar, Jaiasalmer, Uttarlai, Gwalior, Goa, Leh, Pathankot demonstrate the aircraft capability to operate from Air Force bases.
There have also been occasions when the same aircraft has flown thrice on the same day, indicating the operational reliability of this home-bred fighter aircraft.
Military aviation in the country has got a major boost with the approval of several new programmes. Some of these include- MK2 variants of Navy and Air Force; Advanced Medium Combat Aircraft; Unmanned Air Systems; Fifth Generation Fighter Aircraft and Medium Transport Aircraft to name a few.

The attaining of Initial Operational Clearance should mark an important milestone in the long journey


1983

DRDO got permission to initiate a programme to design and develop a Light Combat Aircraft.

1984

  • Government of India set up Aeronautical Development Agency (ADA) as the nodal agency developing the LCA and managing the program
1985

  • IAF generated Air Staff Requirements (ASR) for LCA in October 1985.
2014

  • 1st October - First Flight of LCA Tejas SP 1
    The first Tejas Light Combat Aircraft from the batch of 20 ‘series production’ or full-fledged fighters flew for about 25 minutes in Bengaluru. The flight of ‘SP1’ was piloted by HAL’s Chief Test Pilot Air Cmde K.A. Muthanna(retd). The First Flight of SP1 was achieved within nine months of receiving the penultimate flight worthiness certification, called IOC (initial operational clearance) in December 2013.
  • 8th November - LCA Tejas PV6 (Prototype Vehicle 6), a final configuration two-seater trainer aircraft, successfully completed its maiden flight at the HAL Airport in Bengaluru.
  • 20th December - Maiden Ski Jump of LCA NP-1 : Carrier Compatibility Test - The first prototype of the light combat aircraft (LCA) Tejas Naval version - LCA NP-1 completed its maiden flight as the part of the carrier compatibility tests at the shore-based test facility in Goa. LCA uses more capable Russian R-73 R-77 and arguably one of the best AAM's in the world the Python 5 and Derby and has better BVR capability as for avionics stated in the links above LCA has better avionics a hybrid MMR developed with a Israeli indigenous EW suite known as Mayavi (illusionist) and a Israeli Litening targeting pod which is far more capable than the FLIR used on the JF-17. Pakistan simply needs to paint red colored Chinese Aircrafts to green & advertise in youtube. With Chinese WS10 engine & Russian denial for re-exporting very reliable RD93 engine, there is possibility the reliability of JF17 falls low.
    http://www.tejas.gov.in/
February 21st, 2015  
ROCKERPUSS
 
 
http://1.bp.blogspot.com/










Indian Air Force will locate the 1st squadron of domestically designed and produced LCA (Light Combat Aircraft) Tejas fighter jet at Sulur Airbase near Coimbatore in Tamil Nadu.


According to a DRDO Chief Controller (R&D) Dr W Selvamurthy, IAF will station 20 LCA Tejas fighter jets at Sulur in the 1st phase by early 2012.


Indian Air Force will add another 20 LCA Tejas fighter jets later on.
May 1st, 2015  
ROCKERPUSS
 
 
http://player.vimeo.com/video/115703...e=0&portrait=0



Tejas with double delta &Mirage with single delta configuration.


Additional pages on tejas.gov.in







begin with the premise that I understand the word "good" as a relative term.


Seven safety critical and Twenty Three mission critical software systems of Tejas have been evaluated and close to 2000 successful sorties of Tejas have been completed adhering to IV&V practices. How good the LCA will depend on the situation and type of mission (SEAD, DEAD) that it is entrusted with .

Special features of Tejas:

1. Compound delta platform.
2. Relaxed Static Stability (RSS).
3. Composite structure (which constitute 43% by weight of the airframe)
4. Fly by wire flight control(FBW).
5. Utilities system management software(USMS).
6. Glass cockpit.
7. Multi Mode Radar radar was a Hybrid version of Israel’s Elta EL/M-2032 for all weather operations.

LCA is better than JF17 & MIG-21 in number of ways.

First, there is generation gap. LCA is 4.5 generation aircraft while JF17 (3.5 Gen. using Mig21 Titanium 1955 era Airframe) & MiG 21 are of 3rd gen. JF17 is an all metallic warplane with no fly by wire controls means the pilot will have more work load to fly the aircraft. Cost-effectiveness and weight saving achieved by use of advanced composites which constitute 43% by weight of the airframe. Also it can perform high alpha & better maneuverable than JF17.

Second, LCA got better & tested avionics than JF17.

Third, unlike JF17 OR MiG21 Bison. LCA Tejas is a multirole fighter and is very light in weight. It can perform at high alpha and has better maneuverability. Optimized Structural Design taking into account strength, buckling and Aero-Servo-Elastic requirements for carriage of heavy ext. stores.

LCA uses carb-composites in its airframe hence it has got a stronger body than JF17. It reduce 1000s of screws & its weight.

It has RSS (relax static stability) in it unlike JF17 OR Mig21.

It has digital fly-by-wire Flight Control. The new generation glass cockpit (& NVG) comprises Multi Function Displays (MFD), Head Up Display (HUD) and Stand by Inst. System driven by Open Arch. Mission and Display Computer. Moving towards certification for FOC.

Electronics and Radar Development Est (ERDE) is working on a much advance Active Electronically Scanner Array radar (AESA).
According to official updated material made available to LiveFist,the fully solid-state X-band radar with ACM/SAR/ISAR are being developed.

Unlike Tejas JF-17 is not all weather capable and also not fully developed by Pakistan. Where as Tejas is fully developed in india although some vital parts like Engine are imported.

When it comes to Radar detection JF-17 will have larger rcs where as Teajs will have less because of the carbon comp. body structures!!

Tejas have modern glass cockpit and continiously evolving according to airforce needs. The FOC standard Tejas will have inflight refuelling, BVRs, capability to carry st-off missiles, all kind of conventional and sm-bombs which IAF posses.

The FOC standard Tejas will be a MultiRole all weather 4.5++ aircraft. But JF-17 doesnt have this kind of all round capabilities. Moreover it is a 30 years research product where as JF17 produced under a short span of time. There can be various flaws in design &during flight.

The max. projected weapons payload for the LCA (distributed among seven pylons) is 3.5 tonnes. In the CAS role, the LCA MK1 will be required to target mostly hostile field artillery emplacements & probably some hostile second-echelon armoured regiments. Usage of 100kg/150kg laser-guided PGMs is the only viable option for such strikes. Similarly, for LCA MK1s tasked with defensive counter-air missions inside friendly airspace & tactical air-superiority missions in support of CAS strikes, usage of dual-ejector racks for R-73E WVRAAMs & Derby MRAAMs along with twin external fuel-tanks is the only viable option.

If the enemy IADS is dense and overlapping like in the case of China the LCA will have a hard time in penetrating it. So , the obvious question would be what constitutes a credible IADS ?

A credible IADS, need three things:

1. Sensors: radar is obvious, but this can include other detection systems like IR sensors, passive detectors, and so on.

2. Weapons: AAA, SAMs, interceptors...you need some way of stopping people from getting into your airspace.

3. C3 network: this is what makes the whole thing integrated, providing functions like situational awareness and target de confliction.

The complexity of the whole system and the individual components depends on the volume of airspace you want control over and the perceived threat. But a few S-300PMU-2 batteries coupled with a battle mngmnt. radar system capable of talking to the overall EW network makes things a whole lot different. In India's immediate neighborhood only China boasts of all these above 3 things.

The max. projected weapons payload for the LCA (distributed among seven pylons) is 3.5 tone. In field artillery emplacements & probably some hostile second-echelon armoured regiments. Usage of 100kg/150kg laser-guided PGMs is the only viable option for such strikes. Similarly, for LCAMK1s tasked with defensive counter-air missions inside friendly airspace & tactical air-sup. missions in support of CAS strikes, usage of dual-ejector racks for R-73E WVRAAMs & Derby MRAAMs along with twin external fuel-tanks is the only viable option.

With no SAMs deployed in a theatre, the effectiveness of visually aimed and radar directed AAA is poor, as aircraft can attack unhindered from medium and high altitudes, out of the useful envelope of barrelled weapons. The corollary to this is , in a SAM rich environment where AAA would be absent, aircraft can attack unhindered from low altitudes, exploiting terrain masking and performance limitations in SAMs &radar systems. AAA's are also more difficult to kill, camouflage and emission control. Therefore , how good or bad the LCA is will depend what the adversary has in store in terms of SAMs , AAA and of course fighter aircrafts .






Limited Series Production (LSP) aircraftCurrently, 8 LSP series aircraft plus 40 aircraft are on order.
  • LSP-1 (KH2011) – 25 April 2007. This LCA is powered by F404-F2J3 Engine.
  • LSP-2 (KH2012) – 16 June 2008. This is the first LCA fitted with F404-IN20 engine.
  • LSP-3 23 April 2010. The first aircraft to have the Hybrid MMR radar and will be close to the IOC standard.
  • LSP-4 (KH2014) – 2 June 2010. The first aircraft that was flown in the configuration that will be delivered to the Indian Air Force.In addition to the Hybrid MMR, the aircraft flew with a Countermeasure Dispensing System and an identify friend or foe electronic system
  • LSP-5 (KH2015) – 19 November 2010. IOC standard, with all sensors including night lighting in the cockpit, and an auto-pilot.[
  • LSP-6 – Will be used to increase the Angle of Attack.As well as develop better (Experimental) RAM coating to further reduce its radar signature.
  • LSP-7 (KH2017) – 9 March 2012. APU intake has been aerodynamically reshaped.
  • LSP-8 – First flight trial completed in March 2013. LSP 8 is the version that will go for production
  • SP-1 to SP-40 – Planned to fly by late 2013. The SP-1 and SP-2 will be part of No. 45 Squadron (Flying Daggers) that will be based initially in Bangalore (Bengaluru). In May 2014, HAL planned to deliver four SP aircraft to the IAF. SP-1 took its maiden flight on 30 September 2014.

Performance*** Glossary Of Terms ***
SEAD – Suppression Of Enemy Air Defenses
DEAD – Defeat of Enemy Air Defenses
IADS - Integrated Air Defense System
AAA – Anti Aircraft Artillery
C3 – Command Control Communication
CAS - Close Air Support
WVRAAM – Within Visual Range Air to Air Missile
MRAAM - Medium Range Air to Air Missile
LPI – Low Probability of Intercept
IV &V Ind. Verification & Validation
SAM - Surface to Air Missile
NVG - Night Vision Goggle
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February 5th, 2016  
ROCKERPUSS
 
 


February 8th, 2016  
ROCKERPUSS
 
 
https://qph.is.quoracdn.net/main-qim...t_to_webp=true

Unlike LCA Tejas, JF-17 is not all weather capable and also not fully developed by Pakistan. Where as Tejas is fully developed in India although some vital parts like Engine are imported.
When it comes to Radar detection JF-17 will have larger radar foot print where as Tejas will have less because of the carbon composites body structures!!
Tejas have modern glass cockpit and continuously evolving according to air force needs. The FOC standard Tejas will have AESA Radar, In-flight refueling,BVRs,capability to carry standoff missiles,all kind of conventional and smart bombs which IAF posses.
The FOC standard Tejas will be a Multi-role all weather 4++ gen aircraft. But JF-17 doesn't have this kind of all round capabilities
February 8th, 2016  
ROCKERPUSS
 
 
Tejas - Light Combat Aircraft -Inside Out - DRDO


February 8th, 2016  
ROCKERPUSS
 
 
tejas.jpg

image credit: http://defensetiger.blogspot.in/

Unlike LCA Tejas, JF-17 is not all weather capable and also not fully developed by Pakistan. Where as Tejas is fully developed in India although some vital parts like Engine are imported.

When it comes to Radar detection JF-17 will have larger radar foot print where as Tejas will have less because of the carbon composites body structures!!

Tejas have a modern glass cockpit and continuously evolving according to air force needs. The FOC standard Tejas have a modern AESA Radar, In-flight refueling, BVR capability to carry standoff missiles, all kind of conventional and smart bombs which IAF posses.

Tejas now having a Multi-role all weather 4++ gen aircraft. But JF-17 doesn't have this kind of all round capabilities.

The Tejas Mk1A will equipped with advanced version of ELTA EL/M-2052.The ELM-2052 is an advanced Fire Control Radar (FCR) designed for air-to-air superiority and strike missions, based on fully solid-state Active Electronically Scanning Array (AESA) technology, enabling the radar to achieve long detection ranges, high mission reliability and multi-target tracking capabilities.The ELM-2052 radar provides simultaneous modes of operation supporting multi-mission capabilities for air-to-air, air-to-ground and air-to-sea operation modes, and weapon deployment. In the air-to-air mode, the radar delivers very long-range multi target detection and enables several simultaneous weapon deliveries in combat engagements. In air-to-ground missions, the radar provides very high resolution SAR mapping, surface moving target detection and tracking over RBM and SAR maps in addition to A/G ranging. In air-to-sea missions the radar provides long-range target detection and tracking, including target classification capabilities.[112] The Mark 2 will feature an indigenously-developed AESA fire control radar named Uttam.

The Tejas is equipped with both GPS and a ring laser gyroscope based inertial navigation system; for flying in poor conditions, an Instrument Landing System (ILS) and a ground proximity warning system based on the Terrain Referenced Navigation (TRN) system is also employed.[99][113][114] The LCA also has secure and jam-resistant communication systems such as the IFF transponder/interrogator, VHF/UHF radios, and air-to-air/air-to-ground datalink





Hardpoints: 8 ( 1 beneath the port-side intake trunk for targeting pods, 6 wing, and 1 fuselage) with a capacity of 3,500 kg external fuel and ordnance[168] and provisions to carry combinations of: Avionics
  • Advanced AESA radar (Israeli EL/M-2052 back end processor with Indian inputs)[52]
  • Advanced Electronic Warfare suit
  • medium range IRST
In summary, the JF-17 is the aircraft of today and the Tejas is the aircraft of tomorrow.





The biggest surprise CHINESE are not using JF17 !!
February 10th, 2016  
ROCKERPUSS
 
 




Due to all metal fighter JF-17 pilots are so afraid to fly because easily detectable large RADAR CROSS SECTION (RCS) by any modern enemy fighter jets









July 2nd, 2016  
ROCKERPUSS