Primeiro TEJAS entra ao serviço da IAF

[AlbertoRJ]

Achei que essa foto é a que melhor demonstra o quanto esse avião é compacto:



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[AlbertoRJ]

Tem muitas críticas, a India pagou para ter uma avião...Já tinha postado sobre esse artigo na sessão avião chines de 5 geração

http://www.openthemagazine.com/article/ ... sible-bird

É essa menção do Tejas que faz com que assuntos mais estratégicos especialistas pausa na capacidade da Índia para desenvolver uma alternativa credível, mesmo em parceria com os russos. O Tejas foi 23 anos em fazer, e como Kak diz, é um avião de terceira geração. Índia espera agora para pular uma geração e fazer tanto trabalho nos próximos cinco anos, como era incapaz de fazer nas últimas duas décadas ou assim.

A idéia por trás Tejas foi desenvolver uma aeronave e seu motor a partir do zero. O motor Kaveri era para ser um motor de turbina a gás, mas o programa teve problemas em breve. A Gas Turbine Research Establishment (GTRE) conseguiu encontrar nem o talento certo, nem as peças para montá-la. Em seguida, ele foi duramente atingido pelas sanções. Finalmente, um simulacro de um motor foi preparado há três anos com um pouco de engenharia reversa. Depois de falhar de várias tentativas de tempo frio na Rússia, o governo finalmente decidiu convidar um fabricante estrangeiro como um parceiro no desenvolvimento do motor, que ainda está em andamento. Enquanto isso, o GTRE é o orgulho de apresentar o motor LCA não como um ajuste para os navios.

Foi então decidido que as versões iniciais da aeronave usaria o motor GE404-americanos. O ritmo do programa foi atingida por sanções americanas, e até agora apenas 12 GE404 motores disponíveis para o poder do primeiro esquadrão. O radar que HAL, DRDO e ADA estavam desenvolvendo funcionou em problemas como as unidades de radar desenvolvido por essas entidades''não falar uns com os outros'', ou seja, o radar de bordo era disfuncional. O Governo foi forçado a requisição de radares israelenses.

O Tejas é apresentado como um fly-by-wire, ou seja, aquela que usa produtos eletrônicos sofisticados de computador para torná-lo tão seguro quanto possível. A aeronave fly-by-wire tem normalmente quatro circuitos para cada conexão, ou seja, mesmo se um circuito para o trem de pouso falhar, outros três ainda funcionará. Mas, na realidade, o Tejas indiano tem apenas dois circuitos, e não quatro. Tecnicamente ele não se qualificar como um fly-by-wire aeronaves. E adivinha o que a Índia está lidando no projeto caça de quinta geração que está planejando com a Rússia, o sistema fly-by-wire.

Olha, acho que dos três maiores desafios para os indianos no desenvolvimento do Tejas o FCS é o único que foi plenamente alcançado. O sistema é totalmente digital e é quadruplex sim. Uma façanha.

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[DELTA22]

Sem desmerecer os indianos, muito pelo contrário, até porque não estamos em condições de desmerecê-los em nada, merecem meus sinceros parabéns, minha torcida e votos para que sigam em frente, prefiro o J-10 chinês!

[]'s a todos.

[AlbertoRJ]

Caso o Brasil na década de 80 tivesse seguido por caminho, desenvolver um caça "nacional" também teríamos tido uma serie de problemas, pelo menos eles fizeram um caça que não deve ser tão ruim assim e podem colocá-lo em operação em larga escala, se assim o desejarem, já nós ficamos investindo fortunas para adquirir e principalmente modernizar F-5 .

Saudações

E além disso, o que programa LCA representou em termos capacitação tecnológica não tem preço.
Até mesmo o radar, por exemplo, não sendo considerado satisfatório pela IAF, gerou uma base de conhecimento que certamente será aproveitada, porque a Índia pretende ir muito além do Tejas.

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[AlbertoRJ]

Sem desmerecer os indianos, muito pelo contrário, até porque não estamos em condições de desmerecê-los em nada, merecem meus sinceros parabéns, minha torcida e votos para que sigam em frente, prefiro o J-10 chinês!

[]'s a todos.

Eu acho que até eles prefeririam, se fossem comprar no exterior.
E se a China não fosse uma vizinha incômoda, é claro.

[]'s

[DELTA22]

Sem desmerecer os indianos, muito pelo contrário, até porque não estamos em condições de desmerecê-los em nada, merecem meus sinceros parabéns, minha torcida e votos para que sigam em frente, prefiro o J-10 chinês!

[]'s a todos.

Eu acho que até eles prefeririam, se fossem comprar no exterior.

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Pois é... Eles não são lá muito amigos...

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[AlbertoRJ]

E os testes com a Kaveri continuam:







Fotos da MAKS-2011.

Progresso no impulso de 75 kN para 80 kN.

Creio que em breve teremos novidades.

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[Paulo Bastos]

O TEJAS tem tudo para repetir o fiasco que foi o HF-24 Marut.

Como dizem por aí, a história é cíclica!!!!


Abraços,
Paulo

[AlbertoRJ]

Pode ser que o Tejas seja um grande fiasco mas pode ser até que não. Não me recordo sobre os valores mas me parece que seu custo é muitíssimo baixo. Poderia ser uma opção interessante para países que tenham um orçamento apertado, com as vantagens de ser um avião novo e de quarta geração.
Mas acho que o mais importante no caso seria uma análise do programa, para entendermos as dificuldades, os maiores problemas, o que foi alcançado, o que ficou pela metade etc.
Nós que sempre defendemos a necessidade do Brasil desenvolver localmente os seus sistemas.
Creio que a vantagem, nesse caso, é existir uma razoável quantidade de informações disponíveis, ao contrário dos desenvolvimentos mais recentes dos chineses, por exemplo.
Não que eu queira, exatamente, defender esse modelo para o país, mas entendo que não vamos conseguir progredir sem esforço próprio.

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[LeandroGCard]

O TEJAS tem tudo para repetir o fiasco que foi o HF-24 Marut.

Como dizem por aí, a história é cíclica!!!!


Abraços,
Paulo

O problema do Marut foi a falta de um motor doméstico adequado, somado ao fato da Índia ter sofrido embargos para o motor colocado no avião após os seus primeiros testes nucleares. Como o Kaveri ainda não atingiu o nível de desempenho/confiabilidade necessários para uso no Tejas, por enquanto ele de fato segue mesmo caminho de seu antecessor.

Talvez pelo fato de o projeto do Tejas ser já meio antigo os indianos acabaram seguindo um caminho diferente dos Chineses, que projetaram seu J-10 em torno do motor Saturn que é usado nos seus SU-27 e produzido sob licença (e agora como cópia) no país. Agora eles tem de fato um problema nas mãos, que terão que resolver sob pena de ficarem com um avião ou de desempenho abaixo do esperado ou sensível a embargos estrangeiros, o que vai contra o próprio conceito de se desenvolver um caça nacional.


Leandro G. Card

[AlbertoRJ]

Um problema talvez maior que o da Kaveri é o do radar MMR:

LCA Tejas finally gets Radar!
by Pratik Sawerdekar on April 30, 2010 |

India’s most ambitious military program to build an indigenous Light Combat Aircraft (LCA) reached a major milestone on 23rd April; Friday when it first test flew a radar onboard. The LSP-3 model of the aircraft carried a radar inside its nose for the first time. This comes more than 9 years after it first took to skies. The Hindustan Aeronautics Limited (HAL) described the radar as Multi-mode radar.
Defence Aviation has learnt that the radar was a Hybrid version of Israel’s Elta EL/M-2032 which is currently in service with Indian Navy on its Sea Harrier fleet. The radar is mechanically steered and most components are of Indian origin. The processor of the radar is of Israeli origin similar to that found on the EL/M-2032. There was some confusion regarding the type of radar but it has now been confirmed that it is Doppler pulse radar.
The achievement is significant as this bring the LCA-Tejas closer to receiving the Initial Operation Clearance (IOC). All the necessary tests to receive the IOC are done and now only tests related to the radar remain. It’s expected that these will be completed in 6 months and after that the LCA will enter service with the Indian Air Force (IAF) which has ordered 40 units of LCA’s in IOC configuration. The first aircraft is expected to enter service during the second quarter of 2011.
Meanwhile the LSP-4 is undergoing ground trails and will start flying in a month followed by LSP-5 which should start flying a week later. The recent test flight also had a new air data processor, Radar Warning Receiver (RWR) and a communication and navigation system. The flight lasted for some 52 minutes of which the LSP-3 cruised at Mach 0.8 for some 40 minutes.
The Hybrid MMR won’t be seen on the future versions of the aircraft apart from the first 40 as the Electronics and Radar Development Establishment (LRDE) is working on a much advance Active Electronically Scanner Array radar (AESA) which be much superior to the Hybrid MMR. The new AESA radar is necessary for the Tejas to receive the Final operations clearance (FOC).

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[P44]

Defence Panel Approves LCA for Indian Navy


(Source: Indo-Asian News Service; published Feb. 27, 2012)

India’s defense ministry has authorized an initial batch of 9 naval variants of the Tejas lightweight fighter, which will eventually operate from its navy’s new aircraft carriers. (ADA photo)


NEW DELHI --- In a boost to India's indigenous maritime combat plane development programme, a top defence panel has approved the limited series production of the Tejas light combat aircraft (LCA) for the Indian Navy's under-construction indigenous aircraft carrier (IAC).

The approval came from the Defence Minister A.K. Antony-headed Defence Acquisition Council (DAC) at its meeting last week, a top defence ministry official told IANS Monday. "The nod is for production of nine of the LCA-Navy," the official said.

The approval comes even as the project was finding the going tough over the plane's General Electric F404 engine providing inadequate power -- about 80 kiloNewtons -- for a carrier-borne fighter.

Therefore, India's first home-built carrier-borne combat jet may finally be powered by GE F414 engine that provides 90 kiloNewton thrust to meet the specifications for LCA-Navy.

The Defence Research and Development Organisation (DRDO) project will see the light of the day soon, with the aircraft going through its first flight this year, followed by the necessary approvals for final operational clearance in the next three-four years, in time for the IAC's induction.

The 40,000-tonne IAC is under construction at the Cochin Shipyard, and will carry about 30 combat planes, apart from choppers.

The LCA-Navy had a significant milestone in its development process with the first successful ground-run of its engine in September last year.

The Indian Air Force has ordered seven squadrons - about 140 aircraft - of the LCA and its induction is expected to begin next year.

-ends-

http://www.defense-aerospace.com/articl ... iants.html

[dafranca]

Código: Selecionar todos

Finally, LCA Navy all set for takeoff in Bangalore
Published: Wednesday, Mar 28, 2012, 11:47 IST 
By DNA Correspondent | Place: Bangalore | Agency: DNA

Having missed many deadlines for its maiden flight, the naval prototype of the Light Combat Aircraft (LCA-NP1) is finally expected to fly this week. The LCA-NP1, the country’s first indigenous effort to build a carrier borne naval fighter aircraft, was scheduled to be flight-tested last year. However, technical problems led to postponements a couple of times.

“We are looking at scheduling the flight anytime now. Final trials are currently on,” said DRDO sources. They added that the Aeronautical Development Agency (ADA), the nodal agency for the design and development of the LCA programme, along with other project members such as Hindustan Aeronautics Ltd (HAL), Centre for Military Airworthiness & Certification (CEMILAC), Directorate General of Aeronautical Quality Assurance (DGAQA) and the Navy, is carrying out final integration tests before the first flight, expected this week.

“We have successfully completed the first flight trials of the LCA Limited Series Production-7 aircraft for the IAF and now are geared up to test the naval variant,” sources added. The first flight of the LCA Navy comes at the backdrop of the Defence Acquisition Council (DAC) approving the limited series production of the LCA Navy.

This clearance has come as big boost for the programme, after being hit by delays as in the case of its IAF version.
Compared with the IAF version, the LCA (Navy) has a few variations such as a stronger and longer landing gear, arrester hook for ship-deck landing, front fuselage drooped for better over-the-nose vision to facilitate ship landing, an additional control surface to reduce ship landing speed and consequential changes in various systems.

http://www.dnaindia.com/bangalore/repor ... re_1668383

[P44]

The prototype of the Light Combat Aircraft’s naval variant made its first flight on April 27, as Indian authorities said that the air force version would enter service this year. (IANS photo)

Maiden Flight of LCA Naval Version NP-1


(Source: Hindustan Aeronautics Limited; issued April 27, 2012)

BANGALORE --- The maiden flight of the Naval variant of the Light Combat Aircraft (LCA) was carried out successfully today at HAL Airport, Bangalore. The first prototype of the LCA Naval variant NP-1, took to the skies at 1210 AM, today.

The flight which lasted for about 20 minutes within the designated flight envelope had carried out the planned tests successfully. The test flight was carried out with landing gear extended as a routine practice during the maiden flight. With this successful flight test, the LCA development programme has crossed another major milestone.

The LCA (NP-1) was piloted by Come T.A Maolankar, Chief Test Pilot and co-piloted by Wg Cdr M Prabhu, Flight Test Engineer of NFTC. The event was witnessed by a host of top dignitaries including Dr. V.K Saraswat, Scientific Advisor & DG(DRDO), Chief of Air Staff, Air Chief Marshal NAK Browne, PVSM AVSM VM ADC, Deputy Chief of Naval Staff Vice Admiral Satish Soni, AVSM, NM, Commandant Air Force Training Command Air Marshal Rajinder Singh, AVSM, VM, Chairman HAL Shri R.K Tyagi, DS & Programme Director (CA) & Director ADA Shri PS Subramanyan, Project Director of LCA Navy, Cmde (Retd) C. D Balaji and Dr. K Tamilmani of CEMILAC.

The development plan of the Naval version envisages building of 2 prototypes, a two seat trainer (NP-1) and a single seat fighter (NP-2), as technology demonstrators to carry out carrier suitability certification and weapons integration. HAL is the major partner to ADA, for the Design & Development of the Light Combat Aircraft.

In the Naval variant, the responsibilities of HAL include Design of General Systems viz. Fuel System, Environmental Control System, Hydraulics, Electrical, Communication System, Landing Gear, Arrestor Hook, LEVCON Modification. HAL is also responsible for manufacturing of prototypes, system Integration & installation, Ground Testing and the Integrated Flight Control System Test facility.

The additional features that the naval version would have when compared to the other version of LCA are the LEVCON (Leading Edge Vortex Control Surface) to reduce the forward speed of the aircraft during carrier landing, telescopic landing gear with high sink rate, arrester hook for deck recovery and fuel dump system for emergency deck recovery. The aircraft is specifically designed for take-off from a 14 degree ramp on the aircraft carrier deck and use the Arrester Hook System to facilitate landing within the deck length of 90 meters.

The Naval prototype (NP-1) had its roll out earlier in the presence of the Hon’ble Raksha Mantri and the Chief of the Naval Staff in Jul 2010. (ends)


Maiden Flight of Light Combat Aircraft-Navy (NP1)


(Source: India Press Information Bureau; issued April 27, 2012)



The indigenously built Light Combat Aircraft Tejas LCA Navy NP1 today made its maiden flight in Bangalore when Commodore JA Maolankar, Test Pilot and Wg Cdr Prabhu, Flight Test Engineer completed a 22 minutes flight. During the flight the aircraft was put through various manoeuvers including low speed handling and even undertook a close formation flying at slow speed with another aircraft.

Earlier the LCA Navy NP1 had completed various intensive ground testing regimen including Low Speed Taxi Trials (LSD), High Speed Taxi Trials (HSD), Ground Vibration Test (GVT), Structural Coupling Test (SCT) and extensive system integration tests with power plant using state-of-the-art facilities at Bangalore HAL airport.

With this India has crossed a major milestone in Design, Development, Manufacturing and Testing of a “four plus” generation Carrier Borne Fly-by-Wire STOBAR aircraft.

LCA Navy aircraft is the first attempt in the country to provide a complete marine force multiplier that will give unique battle punch to the naval aviation arm of the 21st century to fulfil national dream of a blue water navy.

LCA Navy is the second STOBAR (Ski Take Off But Arrested Recovery) Carrier Borne aircraft in the world, after the Russian deck-based aircraft. However, this will be the only carrier borne fighter aircraft in the “light” category.

Along with Hindustan Aeronautics Ltd (HAL) who are the Principal Partners with Aeronautical Development Agency (ADA) in association with more than 100 agencies ranging from users, DRDO, CEMILAC, DGAQA, CSIR, PSUs, Private Industrial Sector and academia, spread all over India including Indian Navy and Indian Air Force are involved in the programme.

The key responsibility of LCA Navy design, build, integration and testing is with various Divisions of HAL. ADE has played a lead role in Design and Development of the Integrated Flight Control System in unison with NAL, Bangalore for Testing and Integration of Flight Control Laws to ensure safe functionalities for various phases of flight. AMAGB has been designed and manufactured by CVRDE, Chennai up-to the certification level. NSTL, Visakhapatnam and RCI, Hyderabad has rendered critical support for shock testing of LRUs. Significant Private Industry partnership with ASL (DRDO), Hyderabad for high energy Carbon-Carbon brake pads, and CADES for LEVCON and stub wing design, as examples, has helped maturing of Private Sector of the country.

This Project will give us self-reliance capability in a true sense and also help in taking up more Naval Aircraft Projects in future. Productionisation of indigenously developed Hydraulic system and Fuel system Line Replacement Units (LRUs) have been assigned to GTTC, Bangalore (Government Tool Room and Training Centre) and CTTC (Centre Tool Room and Training Centre), Bhubaneswar respectively.

Above all this, constant support, regular participation, keen observation and continuous guidance from CEMILAC and DGAQA have ensured stringent certification and quality requirements are met on the aircraft.

The Design of first indigenous Naval aircraft imposed huge technological challenges to the Defence Research & Development Organisation (DRDO) to meet the peculiar requirements of Naval aircraft; starting from saline and humid environment of operation, restricted availability of deck run for launch and recovery and high operating load conditions. Basic design changes required to suit the carrier operations are strengthening of aircraft structure and Landing Gear, Arrester Hook, improved engine, enhanced aerodynamic performance and incorporation of special metal/material. A host of other systems like the Leading Edge Vortex Control (LEVCON) surface fitted at the front end of the aircraft wing operated by a concealed rotary actuator with aerodynamic profiling to ensure low landing speed, good controllability and better vision for the pilot. The feature of launch and recovery onboard Carrier at high sink rate of 7.1 rn/sec, flareless landing with engine to full throttle till arrested by deck cable impose five times of loading on Main Landing Gear as compared to the IAF version. Also such axial load calls for re-certification of all Line Replacement Units (LRUs), components and associated systems of naval version to ensure fail safe operation repeatedly.

ADA has set a world class Telemetry and Monitoring facility at the National Flight Test Centre (NFTC) to enable conduct of flight test activities at Bangalore. Intuitive on-line monitoring and control of the aircraft are carried out by the Test Director and various System designers. To facilitate proving the aircraft for carrier borne applications, a Shore Based Test Facility (SBTF) is being set up at the Naval Air Station, Goa replicating an aircraft carrier with a ski-jump for launch and arresting gear for deck recovery. Take off area is ready, with landing readiness scheduled for end of 2012. This test facility readiness is as per schedule.

The Chief of Naval Staff Admiral Nirmal Verma in a communication to the Scientific Adviser to the Raksha Mantri, said, “… I express my appreciation and congratulations to all members of the ADA, HAL and DRDO teams for the first successful limited test flight of the LCA (Navy) aircraft… We must ensure that today’s accomplishment leads to the timely fructification of the operational requirements for carrier borne operations….”

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http://www.defense-aerospace.com/articl ... light.html#

[marcelo bahia]

A definição de projecto, em 87/88 foi feita com consultadoria da Dassault...

Esses bandidos estão em todo o lado

a SAAB não se mostrou interessada?

Bem colocado, P44!!

Sds.