Naval LCA Tejas

[Kunal Biswas]

The air intake story is more than 2 years old, Not sure why disinformation is still among the general mass ..

 

[Dovah]

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Nice render, got a source?

30charsarewaytoomany

 

[Kunal Biswas]

Naval MK2 dimensions are significantly larger than its Air force`s cousins, But regarding Air-Intake, Its stays the same as was in original MK1 ..

 

[Gessler]

Nice render, got a source?

30charsarewaytoomany

It's a real photograph. Credits are there in bottom-right corner.

 

[Dovah]

It's a real photograph. Credits are there in bottom-right corner.

Hmm.. Seems processed though.

Thanks for the info.

 

[Kunal Biswas]

You can find more of his photos here : https://www.facebook.com/media/set/?set=a.1015871571820269.1073742084.400275330046566&type=3

His own site : http://www.hesja.pl/XPL/galeria/show/69

Hmm.. Seems processed though..

 

[sasum]

Air duct intake pipe in case of buried engine is designed in consonance with engine design. Effort is to reduce the Ram air pressure to the level of static pressure at the mouth of fan blade. This is achieved by modifying geometry of intake duct design with the help of Ramp. Spikes and Shocks are additional obstructions to reduce incoming air pressure. Usually, intake duct is designed keeping in mind the engine dimension. In case of pitot duct (exposed engines hung from pylons under wings), sensors control the airflow thru veins.
Since, reducing ram pressure is easier, aircraft designers tend to opt for big-mouth air-duct, compromising with RCS and risking sucking in foreign objects.

 

[Chinmoy]

http://www.geaviation.com/engines/docs/military/datasheet-F414-Family.pdf
http://www.geaviation.com/engines/docs/military/datasheet-F404-Family.pdf

Here are the datasheets for both F404 and F414 engines along with those custom made for ADA. But could anyone share anything about the combustion chamber difference in between these two?

The physical dimension of both the systems are same apart from the higher inlet diameter. But I wonder that when you are accommodating 7kg more air per second then your older counterpart, then you must have some difference there in your combustion camber. I don't think it would have a higher BPR then 404.

 

[kstriya]

Sea Harriers have stopped to exist with no replacement. Is there a way we can develop a Tejas Naval variant with Short take-off and vertical landing abilities. The vertical landing ability has its own advantage and we can operate them from LPD or LHD which India is planning to induct. Apart from F35 there is no navalised vertical landing aircraft in the market. A cost effective and considerably cheap bird like Tejas could be a game changer with 4.5 gen tech.

 

[sasum]

Sea Harriers have stopped to exist with no replacement. Is there a way we can develop a Tejas Naval variant with Short take-off and vertical landing abilities. The vertical landing ability has its own advantage and we can operate them from LPD or LHD which India is planning to induct. Apart from F35 there is no navalised vertical landing aircraft in the market. A cost effective and considerably cheap bird like Tejas could be a game changer with 4.5 gen tech.

VTOL aircrafts have become redundant with the advancement made in combat helicopter technology. Moreover, Harrier like planes take off vertically by vectoring the thrust perpendicularly. This drains out most of the fuel, compromising with weapons load and range; besides these planes create deafening sound.
Ofcourse mid-air refuelling facility can address some of the problems.

 

[AbRaj]

You can find more of his photos here : https://www.facebook.com/media/set/?set=a.1015871571820269.1073742084.400275330046566&type=3

His own site : http://www.hesja.pl/XPL/galeria/show/69

Arrastor hook trial?? 2nd photo?

 

[tejas warrior]

Source : BR Forums

Breaking News !!!

IAF chief ACM Arup Raha will tomorrow take his maiden flight on LCA Tejas in Bangalore..

Hope this is true.. and everything goes smoothly..

Will be a great confidence booster + huge push to the program.

 

[tejas warrior]

IAF chief to take maiden flight in Tejas

File Photo: IAF chief Air Chief Marshal Arup Raha
New Delhi: IAF chief Air Chief Marshal Arup Raha will tomorrow take his maiden flight in India's indigenous light combat aircraft, Tejas, and review the development so far. Raha will also inaugurate the LCA paint hangar in Bengaluru and visit the production line of the aircraft. The IAF has given an order of 120 Tejas, with 100 of them being an upgraded version. He will fly a sortie in a Tejas trainer aircraft which is a two seater, defence sources said. He will also visit the hangar where the Mirage 2000 is being upgraded.

Hindustan Aeronautics Limited (HAL), manufacturer of Tejas, is likely to hand over the fourth aircraft to IAF by June end. The four aircraft will make up for the first squadron of IAF which will be used for training and familarisation. Rather than waiting for LAC Mk II, IAF had decided to go in with an upgraded version of the existing Tejas with over 40 modifications. IAF currently plans to acquire 120 Tejas aircraft, with 100 of these having major modifications. The force wants Active Electrically Scanned Array (AESA) Radar, Unified Electronic Warfare (EW) Suite, mid-air refueling capacity and beyond the vision range missiles.
As per the production plan, six aircraft will be made this year (2015-16) and HAL will subsequently scale it up to eight and 16 aircraft per year. Upgraded version of Tejas will cost between Rs 275 crore and Rs 300 crore. Tejas, which was several years in the making, has now caught the attention of foreign buyers, with Sri Lanka and Egypt evincing interest in the fighter jet. Sri Lanka had recently rejected Pakistan's JF-17 aircraft built with Chinese help, while Egypt had last year signed a contract for 24 French-made Rafale fighter jets. The two countries are interested in the current version of Tejas and not theupgraded one which will be rolled out later.

 

[Sourav Kumar]

IAF chief to take maiden flight in Tejas

File Photo: IAF chief Air Chief Marshal Arup Raha
New Delhi: IAF chief Air Chief Marshal Arup Raha will tomorrow take his maiden flight in India's indigenous light combat aircraft, Tejas, and review the development so far. Raha will also inaugurate the LCA paint hangar in Bengaluru and visit the production line of the aircraft. The IAF has given an order of 120 Tejas, with 100 of them being an upgraded version. He will fly a sortie in a Tejas trainer aircraft which is a two seater, defence sources said. He will also visit the hangar where the Mirage 2000 is being upgraded.

Hindustan Aeronautics Limited (HAL), manufacturer of Tejas, is likely to hand over the fourth aircraft to IAF by June end. The four aircraft will make up for the first squadron of IAF which will be used for training and familarisation. Rather than waiting for LAC Mk II, IAF had decided to go in with an upgraded version of the existing Tejas with over 40 modifications. IAF currently plans to acquire 120 Tejas aircraft, with 100 of these having major modifications. The force wants Active Electrically Scanned Array (AESA) Radar, Unified Electronic Warfare (EW) Suite, mid-air refueling capacity and beyond the vision range missiles.
As per the production plan, six aircraft will be made this year (2015-16) and HAL will subsequently scale it up to eight and 16 aircraft per year. Upgraded version of Tejas will cost between Rs 275 crore and Rs 300 crore. Tejas, which was several years in the making, has now caught the attention of foreign buyers, with Sri Lanka and Egypt evincing interest in the fighter jet. Sri Lanka had recently rejected Pakistan's JF-17 aircraft built with Chinese help, while Egypt had last year signed a contract for 24 French-made Rafale fighter jets. The two countries are interested in the current version of Tejas and not theupgraded one which will be rolled out later.

heartening news. I go by HAL everyday and see their helicopter development/testing everyday. Feeling almost moved

 

[kstriya]

VTOL aircrafts have become redundant with the advancement made in combat helicopter technology. Moreover, Harrier like planes take off vertically by vectoring the thrust perpendicularly. This drains out most of the fuel, compromising with weapons load and range; besides these planes create deafening sound.
Ofcourse mid-air refuelling facility can address some of the problems.

F35 has a VTOL variant, we should look at shirt take off and vertical landing ability. I do not know if this is possible to have it in the small body LCA but sea harrier was in similar dimension of LCA if not smaller. There must be some utility in VTOL for the Americans to make a F35 variant with it. I see a small niche market for that with our LCA having the same capacity. If we can have a vertical landing capability and take off from a ski jump then our future LDP's or LHD's can be converted into a Carrier like the Juan Carlos class one with similar displacement with the first Indian carrier Vikrant. Now the question arrives, is there a way we can have LCA with thrust vectoring ability to land not take off?

 

[sasum]

It is quite courageous on the part of Air Chief to offer to fly a plane under developement. Only Test-Pilots (selected from amongst the finest) fly new untried machines. Since it will be a 2 seater trainer version, it is to be seen whether Raha actually pilots it. All the best to him.

 

[sasum]

F35 has a VTOL variant, we should look at shirt take off and vertical landing ability. I do not know if this is possible to have it in the small body LCA but sea harrier was in similar dimension of LCA if not smaller. There must be some utility in VTOL for the Americans to make a F35 variant with it. I see a small niche market for that with our LCA having the same capacity. If we can have a vertical landing capability and take off from a ski jump then our future LDP's or LHD's can be converted into a Carrier like the Juan Carlos class one with similar displacement with the first Indian carrier Vikrant. Now the question arrives, is there a way we can have LCA with thrust vectoring ability to land not take off?

You are probably referring to F-35B which will have a big box-like fan under middle part of fuselage to lift up 20+ tons almost vertically. It is an aerodynamic disaster in design and no member countries has shown interest in this version of the aircraft. Extensive alteration in FCS will be required, there will be complicated drive-trains, a separate piston engine will be mounted to power the vertical propeller.
For a naval aircraft, catapult is a better option for assisted take-off. V/STOL aircrafts have poor stealth quality, limited range, poor weapons integration capacity and poor maneuverability. These planes are more suited to search & reconnaissances, relief & rescue roles rather than combat. A VTOL version of Tejas can certainly be made; but is it worthwhile? After all there are reasons why very few countries maintain this type of planes...that too in very few numbers.
Some aviation experts on DFI may throw more light on it.

 

[tejas warrior]

It is quite courageous on the part of Air Chief to offer to fly a plane under developement. Only Test-Pilots (selected from amongst the finest) fly new untried machines. Since it will be a 2 seater trainer version, it is to be seen whether Raha actually pilots it. All the best to him.

Partially disagree friend. Mk1 has completed development+testing.. and already indicated.

 

[HariPrasad-1]

I want naval tejas Mk2 to be the base model of all futuristic tejas series. I want Airforce tejas to be curved out of Naval tejas MK2. i.e 15.5 m long. Aerodynamically improved, 116 KN engine. 2500 KM + range, AESA etc. Wight bellow 7.0 tons (For air force, Naval version may be 500 KG havies at the most.). MK3 stealth tejas should also be derived out of Mk2 navy like russia derived PAKFA from previous sukhoi series.

 

[kstriya]

You are probably referring to F-35B which will have a big box-like fan under middle part of fuselage to lift up 20+ tons almost vertically. It is an aerodynamic disaster in design and no member countries has shown interest in this version of the aircraft. Extensive alteration in FCS will be required, there will be complicated drive-trains, a separate piston engine will be mounted to power the vertical propeller.
For a naval aircraft, catapult is a better option for assisted take-off. V/STOL aircrafts have poor stealth quality, limited range, poor weapons integration capacity and poor maneuverability. These planes are more suited to search & reconnaissances, relief & rescue roles rather than combat. A VTOL version of Tejas can certainly be made; but is it worthwhile? After all there are reasons why very few countries maintain this type of planes...that too in very few numbers.
Some aviation experts on DFI may throw more light on it.

I completely agree with you but if the F35B variant was developed it should have some utility for them too. Sea Harriers used a ski Jump to take off and did/ could land vertical. I see utility for such a aircraft on a ship like Juan Carlos class LPD/LHD which can be converted into a small carrier with a squadron of LCA's for specific missions or for enemy AD suppression while docking soldiers on enemy coast. Juan Carlos Calss did operate sea harrier, please correct me if i am wrong on this. It will also showcase Indian technology maturity with aircraft design. We would require approximately 40+ LCA Tejas with such abilities for the three LPD/LHD India seeks to make. The Japanese IZUMO class ships are designed to carry F35B why not Indian LPD/LHD?