http://idrw.org/tejas-mark-ii-aeronautical-development-agency-needs-to-have-realistic-goals/\
"In the first article Shukla essentially argues that modifying the Tejas to create the Mark II using the GE-414 will be easy as “F-414 is no larger than the F-404?. Keep in mind that the Tejas was designed to use the F-404 engine except the weight and drag of the Tejas is too high and so it appears underpowered. The Gripen which was considered by the IAF uses the same F-404 engine as the Tejas except the weight and drag of the Gripen was properly optimised. It may be true that with another 3 years of redesign of the Tejas to use the more powerful F-414 engine will yield a good cheap Tejas Mark II combat aircraft but until it is actually tested no one will know for sure, so can the IAF really wait another 3 years on just the promise that Tejas Mark II will work properly?"
tejas mk2 will have 95 percent drag of tejas mk1. Does that make tejas mk1 a platform with insurmountable drag. No way. Drag reduction is an on going exercise even in FOC for tejas mk1 as said by ADA chief himself. Journos should know that drag producing surfaces also lift. And thats why they were there in the first place!!
The gripen considered by IAF had 100 Kn ge-414 engine , not 84 Kn ge-404 like tejas mk1!!!
CEMILAC Chief tamilmani has said that Ge-414 has the same air flow requirement as that of kaveri for which tejas inlet was originally designed. Journo doesn't knows that!!!
better thrust in jet engies are achieved by
1.increasing operating Pressure Ratio,
2.Turbine Entry temp,
3.SCB tech
4.and bypass ratios,
They are not achieved by doubling engine's air intake!!!
For the IAF pilots it is a matter of life and death, for the citizens of India it is a matter of protecting your sovereignty. The minimum role of the commentator is simply to be realistic and it does seem that relying on the Tejas Mark II is not being realistic, so India definitely needs to reduce the risk by importing foreign combat aircraft, at least until you have a Tejas Mark II that really works well and that you know you can manufacture in large numbers.
Tejas mk2 is an improvement on mk1 (which carries world's deadliest combo of R-73, python coupled with HMDS, So no one needs to worry about that. IF people suspect the efficacy of air to air missile in close combat then they are saying that same R-73 E on Su-30 MKi is also useless.
Regarding the AMCA, of course India needs to work on the design and prototyping anyway, but India still has to consider other options as well, i.e. wait until the AMCA is actually working and then you can rely on it. To put it another way, of course India should spend the money to design the Tejas Mark II and also the AMCA, but just don’t rely on them until you have fully functioning prototypes with initial operational clearance (IOC). Try not to repeat the ongoing misery of the IAF for the last 5 years waiting for the Tejas to get IOC.
Thats what being proposed. So why the long argument?
The biggest problem that India has is that every project is funded only when the politicians think there is a practical need for it. For example this design and prototype of Tejas Mark II should have been completed 10 years ago along with the initial prototype of Tejas, because the F-414 engine is from the same family as the F-404 engine and has been in existence for 20 years now. Yes, I am aware that it sounds like hindsight, but the fact is that India should have designed and prototyped Tejas and Tejas Mark II at the same time so that you could have selected whichever version works better i.e. find the problems earlier so you can make the choices earlier. Indeed any engineer in any branch of engineering will tell you that the best way to fully understand a design is to to make two or more versions and compare them.
Stupid piece of logic, No way you can venture into tejas mk2 without substantial work on tejas mk1 finished. Why? the problems that can be sorted out on tejas mk1 should not be carried on to tejas mk2.
Also only after fully testing tejas mk1 at least till IOC, , can we propose improvements to tejas mk2.
Which ever version works better/ What piece of crap of this, Every one knows that tejas mk2 works better!!!
That is why I really believe that India should not finalise the design for the AMCA right away.
Thats why I really believe journos who know nothing about tech matters should restrict themselves to breaking news on lalit Modi
Instead of shooting for the goal of the stealth capable 5th generation AMCA with a pair of 110 kN engines (which India does not have right now anyway) to be built in the next 15 years, India needs to aim for an intermediate goal to be delivered in 5 years.
Just a few paragraphs before the guy wanted to develop both tejas mk1 and mk2 at the same time!!! Now he wants us to drop 5th gen AMCA and concentrate on what can be delivered in 5 years.
In 5 years we cant even buy FGFA off the shelf!!!
Journo has no idea about lead time for induction of fighter jets!!!!
The intermediate goal will be a much simpler twin-engine combat plane without stealth in two configurations at the same time i.e. a first small configuration using a pair of 79 kN F-404 engines and a second slightly larger configuration using a pair of 98 kN F-414 engines.
So we must set an intermediate goal of 11.5th standard annual exam for every 12th Std student!!!The journo and his aunty will foot the bill for ,"much simpler twin-engine combat plane without stealth in two configurations at the same time i.e. a first small configuration using a pair of 79 kN F-404 engines" and buy them in hundreds to justify the cost perhaps!!!
Then you can compare the two configurations and learn how to scale the airframe in size based on the power of the engines. Indeed, these configurations are test beds for the final design which will be the largest in size and complexity. Also you can practice applying stealth technology on the small and medium planes to begin with. Once India has successfully done that, then India is ready for the next design/prototype step i.e to get the best configuration using the more powerful 110 kN engines which hopefully by that time India will have obtained from USA or Europe.
Its like lets test drive Vento and verna to decide which one to buy bright idea that the journo has seen on many autocar episodes.
he has no comprehension about development lead cycle times!!!
In other words the 5th generation AMCA project will be much easier to implement if you take it in steps. In addition the smaller twin-engine combat plane designs which were developed as intermediate goal can be adapted as combat aircraft in lesser roles. If India takes the project in steps, the chance of success is much higher. But until India is successful in doing this, you obviously also have to keep buying enough foreign combat planes to keep the IAF fully operational.
Some one should tell the journo that such far reaching ideas were implemented in aerospace sector!!!
No one develops a non stealth twin engined 74 Kn engine plane that host nation airforce has no interest in buying in 2030!!!
