LCA Tejas Mk1 & Mk1A - News and discussions

Where do you apply area ruling and do LCA need area ruling? Area ruling was applied to tube designs of early generation fighters with low wing designs. aircraft with mid wing design or with blended wing-body or blended fuselage-wing design do not need area ruling. LCA is a mid wing design which has a slight amount of wing-fuselage blending and so it does not need area ruling. you seem to be confusing with Fineness Ratio.
Fineness ratio - Wikipedia
That may be it. Area rule came up a long time ago when Mk-2 was being made. Somebody would have to fish the articles.
 
Where do you apply area ruling and do LCA need area ruling? Area ruling was applied to tube designs of early generation fighters with low wing designs. aircraft with mid wing design or with blended wing-body or blended fuselage-wing design do not need area ruling. LCA is a mid wing design which has a slight amount of wing-fuselage blending and so it does not need area ruling. you seem to be confusing with Fineness Ratio.
Fineness ratio - Wikipedia
Are you sure? I think area rule is now a classic in fighter design. All fighters are more or less tube design like.

A top view of the body of a Mirage 2000 perfectly illustrate the area rule, no?
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Are you sure? I think area rule is now a classic in fighter design. All fighters are more or less tube design like.

A top view of the body of a Mirage 2000 perfectly illustrate the area rule, no?
View attachment 2243
Mirage is a perfect example of area ruling being a low wing tube design. Show me area ruling in Rafale and Typhoon aircraft or F-16/18 or F-35/22. area ruling was in vogue even during the times when Jaguar was built. Does that have area ruling.
 
Mirage is a perfect example of area ruling being a low wing tube design. Show me area ruling in Rafale and Typhoon aircraft or F-16/18 or F-35/22. area ruling was in vogue even during the times when Jaguar was built. Does that have area ruling.
It's indeed far less clear in the case of Rafale and EF....
Jagar was studied as a training plane, not as a fighter.
 
It's indeed far less clear in the case of Rafale and EF....
Jagar was studied as a training plane, not as a fighter.
There is no area ruling in Typhoon or Rafale. Jaguar was SEPECAT Jaguar. France was part of building it.
I will not comment more on it but want you to please read what I posted. You need area ruling for low wing tube designs which had underpowered engines. HF-24 was grossly underpowered and yet exceeded Mach-1 at altitude without reheat due to very nice area ruling. we now have F-22 with fixed intakes which is capable of Mach 2.5 speeds. Why? The power is so much in excess that it overcomes spillage drag from the fixed intakes and allows aircraft such high speeds.
 
No. And it won't be sufficient to overcome it's poor 'area ruling'. Now I don't know much about the area rule and I couldn't be arsed to spend my time reading about it, but what I did read is that it dynamically increases transonic drag if not done right and the Tejas is about 1m shy from right. Which among other things help explain it's poor range vis a vis the Gripen. The Navy was getting the 1m plug but also widening the plane at the same time. What happens with it remains to be seen.

Gripen C has lower range than LCA Mk1. By 50Km.

A 1.5m plug to the current version seems about right to bring it to Gripen E level. Gripen E will have an MTOW of 17.2 tons with the same engine and so should we.

Check the N-LCA Mk2. It is a little over 1m longer than Mk1 and has 700Kg extra fuel.
 
What's this in **** about the Mk2 being designed as an MCA ? How true is it ?

No truth to the designation. But there is some truth to the LCA Mk2's MTOW coming to the Gripen E's class, but it's not confirmed yet.

Since an aircraft above 16T is more capable than a light class fighter like the Mk1 or Mk1A, **** is using that as an excuse to move the Mk2 to the medium category similar to Gripen E. It's all semantics.
 
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No truth to the designation. But there is some truth to the LCA Mk2's MTOW coming to the Gripen E's class, but it's not confirmed yet.

Since an aircraft above 16T is more capable than a light class fighter like the Mk1 or Mk1A, **** is using that as an excuse to move the Mk2 to the medium category similar to Gripen E. It's all semantics.
Apart from the weight aspect , based on your insight and what's available in the public domain , how does the Mk2 compare with the Gripen E ?
 
Apart from the weight aspect , based on your insight and what's available in the public domain , how does the Mk2 compare with the Gripen E ?

Electronics will be similar, so will the operational and maintenance procedures.

Gripen E is way better in range. And its airframe will also be better since it has canards while both aircraft have the same weight and engine power. The weapons layout design is also better and Gripen has better weapons options.

LCA will be easier to upgrade. The IAF is familiar with the design after the Mig-21 and M-2000 experience.

Although the LCA is cheaper, Gripen has a longer life. That more than compensates the difference. LCA Mk1 has a service life of 3000 hours and Mk1A may increase to 4000 hours. Mk2 could be higher. Whereas Gripen E has a service life of 8000 hours.

If I were a third party AF looking for air to air capability, I would choose the Gripen over LCA any day. But if the LCA carries the Kaveri engine, then all of Gripen's advantages become irrelevant. This engine will make any aircraft special.

If I were a third party AF looking for air to ground capability, then Gripen is the only option. Meaning, it is a better multirole aircraft than the LCA.
 
Tejas MK-1 to get FOC this year: **** report

Chandraker Bharti, Joint Secretary (Aerospace) while speaking to the media said that Final Operational Clearance (FOC) of Tejas MK-1 will be completed this year and also confirmed that many countries are interested in the purchase of the aircraft but refused to disclose the names.

According to recent media reports, Demonstration of the Mid-Air Refueling Capacity is only major requirement left before Tejas MK-1 will be granted FOC and plans are in place to start trials after June this year.

According to unconfirmed reports, IAF and DRDO have agreed to delink Mid-Air Main Gsh-23 gun firing trial, even though it already has cleared ground trials many years ago, holding back trials or realisation of the capacity is more to do with refinement and upgradation rather than due to technical issues with the system.

HAL and Private Players involved in the production of LCA-Tejas are planning to ramp up production rate of the aircraft from 16 to 18 by 2020-21 and thereafter to 24 from 2021-22 after receiving instructions from Defence ministry.

LCA-Tejas Squadron ” Flying Daggers”, No. 45 Squadron is already nearing 1000 sorties and reports of 100 manhours required for each 1-hour sortie of the LCA-Tejas according to IAF Sources have been aggregated and even within limited aircraft at disposal, Squadron has been training more pilots who are moved to the squadron without any difficulties and operational availability of the aircraft is comparable to the European aircraft fleet in IAF .

Yet to be verified reports also suggest that IAF has agreed to drop mandatory Final Operational Clearance (FOC) certification required before inducting Tejas MK1-A and MK-2 aircraft under development and will accept the Global practice of inducting fighter aircraft after they meet IOC Cerftication.

Tejas MK1-A and MK-2 will be in IOC configuration before they even make their first flight and once trials are conclusive and IOC Certification granted, aircraft will move to production. this will help reduce the turnaround time of development, while FOC will be an on-going process which will continue to seek improvements and upgrades while they are inducted
 
The IAF is often seen as reluctant user of indigenously-built Tejas aircraft. Is that philosophy changing? Does the IAF still think it is a good aircraft but not yet a good enough combat jet? Are you working with ADA and HAL to improve Tejas? What changes would you like to see in Tejas so that it forms the bulk of the IAF inventory in the coming decade?

CAS: The IAF has fully supported the LCA program since the very beginning. Our test pilots have been involved since early 1990’s with the LCA program. The IAF provides critical support for flight trials at Bangaluru and the LCA would not have reached the present state without the active involvement and support of the IAF. The numbers speak for themselves and as it stands today, the IAF has committed for 123 LCA (40 x LCA, 83 x LCA Mk-1A).

The LCA is a potent platform which is being inducted to replace the ageing MiG-21 fleet and will fulfill its assigned role and tasks. As far as improvements are concerned, the LCA Mk-1A will have better capabilities such as AESA Radar, integrated Electronic Warfare Suite, long range Beyond Visual Range missile, Air to Air Refueling and better avionics with many maintainability improvements. The LCA Mk 2,which will have further enhancements, is at the design stage. We are also working with DRDO for the indigenous AMCA program.

How many more Tejas aircraft would you like to see in the IAF in the next 10 years?

CAS: The IAF has committed for procurement of 123 x LCA. As you are aware, the IAF has already signed two contracts for 40 x LCA Mk 1 aircraft. Of these, 20 are in the Initial Operational Clearance (IOC) standard and 20 will be in Final Operational Clearance (FOC) standard. RFP for 83 x LCA Mk 1A was issued in Dec 17. These deliveries of these aircraft would be completed in the next 10 years. We expect LCA Mk-2 to replace Mirage 2000, Jaguar and MiG-29 aircraft in the future.

Rafale Provides the IAF Strategic Deterrence Against Our Adversaries: Air Chief
 
Electronics will be similar, so will the operational and maintenance procedures.

Gripen E is way better in range. And its airframe will also be better since it has canards while both aircraft have the same weight and engine power. The weapons layout design is also better and Gripen has better weapons options.

LCA will be easier to upgrade. The IAF is familiar with the design after the Mig-21 and M-2000 experience.

Although the LCA is cheaper, Gripen has a longer life. That more than compensates the difference. LCA Mk1 has a service life of 3000 hours and Mk1A may increase to 4000 hours. Mk2 could be higher. Whereas Gripen E has a service life of 8000 hours.

If I were a third party AF looking for air to air capability, I would choose the Gripen over LCA any day. But if the LCA carries the Kaveri engine, then all of Gripen's advantages become irrelevant. This engine will make any aircraft special.

If I were a third party AF looking for air to ground capability, then Gripen is the only option. Meaning, it is a better multirole aircraft than the LCA.

@_Anonymous_

New information says the Mk2 will be better than what I have stated here.
 
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In what way apart from what you had earlier speculated on ?

The Gripen E has a range of 2500Km without drop tanks. While LCA Mk2 won't exceed 1800Km.

But now, Mk2 will be 1m longer and carry more fuel. So the range difference will reduce drastically. It won't reach the Gripen E's range, but will be more than Mig-29K's.
 
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The Gripen E has a range of 2500Km without drop tanks. While LCA Mk2 won't exceed 1800Km.

But now, Mk2 will be 1m longer and carry more fuel. So the range difference will reduce drastically. It won't reach the Gripen E's range, but will be more than Mig-29K's.
Can you put a no to it ? 2k , 2.2k? Is that the only change ?
 
Can't say yet. The Mig-29K's range is 2000Km. So Mk2's range can be anywhere between 2000 and 2500Km.

The fuel increase with 0.5m of the 1m increase can be about 800L. So it could be 2250Km.

Any planned changes to weapons layout or landing gear to make central hardpoints more useful.