ADA Tejas (LCA) News and Discussions

Which role suits LCA 'Tejas' more than others from following options?

  • Interceptor-Defend Skies from Intruders.

    Votes: 342 51.3%
  • Airsuperiority-Complete control of the skies.

    Votes: 17 2.5%
  • Strike-Attack deep into enemy zone.

    Votes: 24 3.6%
  • Multirole-Perform multiple roles.

    Votes: 284 42.6%

  • Total voters
    667
Status
Not open for further replies.

Enquirer

New Member
Joined
Mar 20, 2018
Messages
3,567
Likes
9,357
Dude, I gave up reading/responding to ersakthivel's posts long back. My last response was only to his obsequious 'chela' who re-posted ersakthivel's nonsensical question to me about Su-30MKI sea level speed(his 'chela' still claims I didn't answer the question despite my pointed answer that everyone else expounded on and agreed with)
Rest assured, I have no intention to engage morons.
@Jackd
Dude, I hadn't cared to read that moron's post; but since you mentioned I got curious and peeked!

As I had mentioned earlier, ersakthivel has become my bitch - he can't get me out of his mind. He seriously dug up posts from several weeks ago, compiled them together to launch another 'dud' attack on me! I rule his mind :) :)

Obviously, that nutjob has no understand of basic physics or that of logic!
How is Su-30MKI adding 400kg extra weight at a point far from control surface WITH NO INCREASE IN ENGINE THRUST equivalent to the hypothetical increase in Tejas engine weight for 20% INCREASE IN ENGINE THRUST??
Not to mention, the moron has no clue about he concepts of 'moment'!!!

The way ersakthivel conveniently dropped essential information is exactly how frauds prey on other idiots! If he's not a fraud, then he's an idiot himself.

Request to all: Please don't draw my attention to that moron's posts anymore, I am trying to ignore them. I've had enough of nonsense. :) :)
Those you wish to believe in that fraud is more than welcome to do so! It's a free world (Ram Rahim Singh to Nityananda sway masses of idiots) :) :)
 
Last edited:

ersakthivel

Brilliance
New Member
Joined
Mar 6, 2011
Messages
7,029
Likes
8,764
Country flag
Eggspurts are yet to understand

That thrust or no thrust,

All weights need to be balanced so that design for CG & CL has to be maintained,

This has nothing to with thrust.

Of course ,"aerodynamic", by dummies author

Has no way of understanding , such simple structural basics ,


Egggsputr's view of ,

,"canards were added to balance radar weight on su 30 mi"

&

Tejas needs no weight balancing for CG & CL due to 300 kg extra engine weight



Contradict each other squarely.

Since no one pointed out to him in kaveri engine thread about this,

He is busy drawing stupid parallels to prove his hopeless lie.

Pathetic,

Just pathetic,

His attempt at wriggling out of such pathetic fraudulent posts, is as foolish as catching a falling knife.

ROFL

Using foul language will only adversely affects his own mental balance,

Balancing su 30 mki radar weight by ,"canards" can wait,

Guys need to get their mental balance restored first,...ROFL.
 
Last edited:

Enquirer

New Member
Joined
Mar 20, 2018
Messages
3,567
Likes
9,357
@Jackd
Dude, I hadn't cared to read that moron's post; but since you mentioned I got curious and peeked!

As I had mentioned earlier, ersakthivel has become my bitch - he can't get me out of his mind. He seriously dug up posts from several weeks ago, compiled them together to launch another 'dud' attack on me! I rule his mind :) :)

Obviously, that nutjob has no understand of basic physics or that of logic!
How is Su-30MKI adding 400kg extra weight at a point far from control surface WITH NO INCREASE IN ENGINE THRUST equivalent to the hypothetical increase in Tejas engine weight for 20% INCREASE IN ENGINE THRUST??
Not to mention, the moron has no clue about he concepts of 'moment'!!!

The way ersakthivel conveniently dropped essential information is exactly how frauds prey on other idiots! If he's not a fraud, then he's an idiot himself.

Request to all: Please don't draw my attention to that moron's posts anymore, I am trying to ignore them. I've had enough of nonsense. :) :)
Those you wish to believe in that fraud is more than welcome to do so! It's a free world (Ram Rahim Singh to Nityananda sway masses of idiots) :) :)
I had said several times that 150 kg increased engine weight can easily be balanced by placing IRST near the nose (currently it cannot be accommodated due to the very CG balance).
What is absolutely moronic is to postulate that slight increase in engine weight (x) needs 5x to 7x (950kg??) increase in compensatory load - obviously a stupid thing to scare folks into believing him!

Su-30MKI added nearly half a tonne at the nose with no increase in thrust; obviously extra lift is needed to compensate - by the use of Canards!

@Jackd
You take the wheel from here on - I left good tread marks on that moron's face. Do back up and re-imprint the tread marks! :)
 

ersakthivel

Brilliance
New Member
Joined
Mar 6, 2011
Messages
7,029
Likes
8,764
Country flag
I had said several times that 150 kg increased engine weight can easily be balanced by placing IRST near the nose (currently it cannot be accommodated due to the very CG balance).
What is absolutely moronic is to postulate that slight increase in engine weight (x) needs 5x to 7x (950kg??) increase in compensatory load - obviously a stupid thing to scare folks into believing him!

Su-30MKI added nearly half a tonne at the nose with no increase in thrust; obviously extra lift is needed to compensate - by the use of Canards!

@Jackd
You take the wheel from here on - I left good tread marks on that moron's face. Do back up and re-imprint the tread marks! :)

Yo eggspurt,

Why are you calling another guy's help in wriggling out of your hopeless lies.

Just keeping shut up will do.

ROFL.
 

Enquirer

New Member
Joined
Mar 20, 2018
Messages
3,567
Likes
9,357
Yo eggspurt,

Why are you calling another guy's help in wriggling out of your hopeless lies.

Just keeping shut up will do.

ROFL.
You're my bitch! I forgot all about you; but you can't get me out of your mind.
You sound so desperate - like a guy who's having a nervous breakdown....like a guy who's exposed completely on the forum!
 

ersakthivel

Brilliance
New Member
Joined
Mar 6, 2011
Messages
7,029
Likes
8,764
Country flag
So another quackery prophecy is coming
I had said several times that 150 kg increased engine weight can easily be balanced by placing IRST near the nose (currently it cannot be accommodated due to the very CG balance).
What is absolutely moronic is to postulate that slight increase in engine weight (x) needs 5x to 7x (950kg??) increase in compensatory load - obviously a stupid thing to scare folks into believing him!

Su-30MKI added nearly half a tonne at the nose with no increase in thrust; obviously extra lift is needed to compensate - by the use of Canards!

@Jackd
You take the wheel from here on - I left good tread marks on that moron's face. Do back up and re-imprint the tread marks! :)
Add 300 kg to engine , add 150 kg to first,

Add another 150 kg to sinething else,
Empty weight goes past 7 tons,

Then what is the use of extra 20percent thrust,

When plane flies at lower thrust than peak thrust,
How does your co are thoeryof monkey balancing aerodynamics works?


will tejas hurtle nose down??


Also if higher thrust engine goes into super sukhoi upgrade,

Will they remove the canards?

Weigt balancing CG & CL is different from engine thrust ,

Because engine operates at different thrust level ,all the time,

But weights are constant.

Take a break from quacking continuously & think.

ROFL.
 

ersakthivel

Brilliance
New Member
Joined
Mar 6, 2011
Messages
7,029
Likes
8,764
Country flag
Lying Crooks don't understand that fighters engine operate at varying thrust levels.

Weight is constant.

Weight distribution is taken care , keeping in mind,

The relationship between ,

CG & CL, & Margin of instability in RSS fly by wire Delta like tejas .

Relationship between engine thrust & fighter weight had to be seen on totality, i.e in TWR ratio,

So saying that 20 PEAK percent thrust increase ,

Will off set 300 kg engine weight at tail

is ,"aerodynamics" for gutter mongrels, whose only interest is in , BITCH,,,

ROFL.


Also if higher thrust engine goes into super sukhoi upgrade,

Will they remove the canards?,

So lift forces from canards won't be needed any more to balance extra weight of radar?

Then what will happen when canards less su30 MKI flies at far lower thrust than its peak thrust?

Will it hurtle nose down?

Significant permanent weight additions at extreme points of the fighter,

Need deep structural refinements,

Not just extra engine thrust will take care of them.

External stores increase, fuel depletion are entirely another thing.

Why?

A when a fighter is qualified for max G pulled, AOAs, STRs, ITRs, pulled,

Those external stores are not there,

These specs are qualified with empty fighter weight, CG, CL equations,(margin of instability)

300 kg extra engine weight at the tail will play havoc with these equations,

Peak engine thrust won't help.

So poking around with weight balance won't help.


Mongrels whose abiding interest in finding bitches can answer,

ROFL.
 
Last edited:

ersakthivel

Brilliance
New Member
Joined
Mar 6, 2011
Messages
7,029
Likes
8,764
Country flag
No fighter can pull peak STR, ITR, AOA , G max, with external stores,

So engine getting 300 kg heavier at tail, is equivalent to varying external, fuel store is a meaningless argument.

Because this ,"weight unbalanced engine"

is present when fighter pulls. those peak specs

So it will play havoc with relationship between

CG, CL, margin of instability,

in negative stability(RSS) at that time,
 

darshan978

Darth Vader
New Member
Joined
Oct 22, 2017
Messages
488
Likes
793
Country flag
@Jackd
Dude, I hadn't cared to read that moron's post; but since you mentioned I got curious and peeked!

As I had mentioned earlier, ersakthivel has become my bitch - he can't get me out of his mind. He seriously dug up posts from several weeks ago, compiled them together to launch another 'dud' attack on me! I rule his mind :) :)

Obviously, that nutjob has no understand of basic physics or that of logic!
How is Su-30MKI adding 400kg extra weight at a point far from control surface WITH NO INCREASE IN ENGINE THRUST equivalent to the hypothetical increase in Tejas engine weight for 20% INCREASE IN ENGINE THRUST??
Not to mention, the moron has no clue about he concepts of 'moment'!!!

The way ersakthivel conveniently dropped essential information is exactly how frauds prey on other idiots! If he's not a fraud, then he's an idiot himself.

Request to all: Please don't draw my attention to that moron's posts anymore, I am trying to ignore them. I've had enough of nonsense. :) :)
Those you wish to believe in that fraud is more than welcome to do so! It's a free world (Ram Rahim Singh to Nityananda sway masses of idiots) :) :)
your arguement about 20% increase in thrust and 20% increasing in engine weight makes tejas better is baseless
lets assume ge f404 weight increase(20%) to 1260 kg from 1050 kg and thrust increase(20%) to 100.8 kn from 84 kn original.
now thrust to weight ratio of engine stays same adding no extra value to the jet and to increase thrust we added more compressors and turbine and made engine bigger!
so we have to make our tejas bigger. so such modifications add no advantages to tejas!
and at last we end up making another mirage. with slightly more thrust to weight ratio.
 

ersakthivel

Brilliance
New Member
Joined
Mar 6, 2011
Messages
7,029
Likes
8,764
Country flag
Just take a well engineered formula 1 car,

Increase weight by 30 percent, at one extreme point,

Increase engine power by 30 percent,

Drive it around the corner with top permissible speed,(the speed before weight increase)

Will it behave , like it behaved before weight increase or not,

It is as simple as that.
 

ersakthivel

Brilliance
New Member
Joined
Mar 6, 2011
Messages
7,029
Likes
8,764
Country flag
Let's see how no MNC fighter maker will give IAF the kind of support teja gives,

This for guys who rant , teja is obsolete, still born, etc, blah, blah,

PRESS INFORMATION BUREAU (DEFENCE WING)
GOVERNMENT OF INDIA
*********
LCA TEJAS ACHIEVED YET ANOTHER ACCOMPLISHMENT
New Delhi: Magha 08, 1936*
Wednesday, 28 January 2015

With three consecutive start-ups of its engine after overnight soak in extreme cold(around -15ºC) conditions of Laddakh winter, that too withoutany external assistance, Tejas, the Indian Light Combat Aircraft has achieved yet another and a rare distinction. Starting the fighter aircraft under suchextreme condition without any external assistance or heating is atechnology challenge. The requirements become further stringent when the starting is to be done three times consecutively with a partially charged battery. Team LCA led by AERD&C of HAL, and members from ADA, NFTC, IAF, CEMILAC and DGAQA have succeeded in achieving this. “The team LCA has achieved a technological breakthrough”, stated Dr. PS Subramanyam PGD (CA) & Director, ADA.

The engine starter is developed indigenously by HAL Aero Engine Research and Design Centre (AERDC), Bangalore. Prior to aircraft tests, the Jet Fuel Starter (JFS) was extensively tested on test rig to meet starting conditions across the operating altitudes including Leh (10,700 ft.) and Khardungla (18300 ft.). The control software of JFS was fine tuned to work at all operating altitudes with no adjustments from cockpit. GE-F404-IN20 engine start up control schedule was also varied with several control patches to establish reliable start.

AERDC Design T eam's Idea Recognised The requirement of three consecutive starts for the LCA main engine has been a long felt need. The JFS (GTSU-110) was modified for improved lubrication to achieve three consecutive starts with a time gap of 75 seconds between two successive starts. However, the demonstration could not be done till now because the flywheel which is connected to the output shaft of the GTSU-110 takes six minutes to come to a stop. AERDC team members Shri K. H. V enkatesha, Manager and Shri S. EsakkiMuthu, Senior Managrr (Design) came up with an innovative method to brake the flywheel, with air impingement on the fir-tree section of the flywheel, stopping it within 70 seconds. The novel idea was executed in one week and three consecutive starts were demonstrated infront of the committee members from IAF , ADA, RCMA (E) and ORDAQA (E). HAL has recognised the work of the team members, and a Certificate of Commendation was given to them during the AERDC Culture of Continuous Learning function.
–__________________________

Each & every request of IAF is being taken care of
Because ultimately it is the IAF which has to take on the responsibility of defending high himalayan frontier,

Yet guys come here, bluff ung tejas doesn't fulfill 1984 IAF ASR,

They can inform us all which other IAF fighter can do this at Leh.

,
 
Last edited:

ersakthivel

Brilliance
New Member
Joined
Mar 6, 2011
Messages
7,029
Likes
8,764
Country flag
And the words of the IAF Men who matters,

interview of Air Commodore (retd.) Rohit Verma.

He mentioned that he could again fly a single seat Tejas by just undertaking 2 sorties in the simulator instead of going through a dual check flight, like he would if he flew a MiG-21 again.

When he flew a Tejas for the first time, there was no twin seater and he flew solo the first time. In his words "I was totally floored by the control harmony, how easy the airplane was to fly and how easy it was to land this airplane; and this mind you, was after I had flown a Mirage-2000 earlier in my career."

"I decided to throw everything that I possibly could at this airplane; I made sure that it went through hot weather trials and Leh trials and at the end, we were convinced that we had a good product on our hands."

"LCA Tejas is one of the few fighter airplanes in the IAF inventory which is capable of flying out of a high altitude airfield like Leh."
 

ersakthivel

Brilliance
New Member
Joined
Mar 6, 2011
Messages
7,029
Likes
8,764
Country flag
This what the Derisively called "MIG 21 class fighter ",

is doing to fledgling indian mil aviation sector,

Most of the modules and components have been outsourced by HAL to the private sector.
Wings are manufactured by L&T at its Coimbatore unit. T
Front fuselage-Dynamatic Technologies
Central fuselage - Vem technologies
Rear fuselage-Alpha Tocol
Tail fin and rudder assembly, shoulder and trouser ducts-TAML
Airbrake-Mahindra Aerostructures.

At present 69 percent of the total work is being outsourced to the private sector. HAL is playing the role of systems integrator for Tejas now.

The second assembly line is coming up now and HAL will be able to make 16 Tejas per annum. According to T Suvarna Raju HAL can produce another 8 Tejas per annum over the 16 if the Tier 1 and Tier 2 suppliers ramp up their production of the modules.
 

Jackd

New Member
Joined
Jul 27, 2018
Messages
741
Likes
804
Is there a way to accomodate a SPJ inside the body of Tejas in Mk1 and Mk1A versions during their midlife upgrade?
 

ersakthivel

Brilliance
New Member
Joined
Mar 6, 2011
Messages
7,029
Likes
8,764
Country flag
The following BR post about flutter test may esse the confusion regarding that 1350 kmph flight speed at sea level

forums.bharat-rakshak.com/viewtopic.php?f=16&t=5058&
This is Vina's post,

interesting. The document at http://www.aero.iisc.ernet.in/kartik/INCAST_sudha5.pdf

at page 5 is very close to the actual parameters that we can discern from the flight tests in Goa.

Note the graph on Page 5 corresponds to the gradual opening up of the flight envelope upto the point when this IAF decided to go public with the mach numbers and sea level testing..

The 900 feet elevation corresponds nicely to one of the test points identified there.


It does look like


a) LCA is behaving very closely or exceeding the design numbers and


b) we might be reaching end of one milestone wrt fluttter testing..

Caveat I am just a regular jingo..


Some uber qualified jingos will be able to discern more.


So this 1350 kmph at sea level was a predicted test point achieved at sea level.

UnfortyUnfort the link sudha5.PDF is not working.

Another post,

at page 5 is very close to the actual parameters that we can discern from the flight tests in Goa. Note the graph on Page 5 corresponds to the gradual opening up of the flight envelope upto the point when this IAF decided to go public with the mach numbers and sea level testing.. The 900 feet elevation corresponds nicely to one of the test points identified there.
It does look like
a) LCA is behaving very closely or exceeding the design numbers and
b) we might be reaching end of one milestone wrt fluttter testing..
Caveat I am just a regular jingo..
Some uber qualified jingos will be able to discern more.
 

Enquirer

New Member
Joined
Mar 20, 2018
Messages
3,567
Likes
9,357
now thrust to weight ratio of engine stays same adding no extra value to the jet
I've said this multiple times (somehow the point is not getting appreciated by ersakthivel & associates):
Thrust-to-weight ratio of the ENTIRE AIRCRAFT is the most important factor, not thrust-to-weight for the engine.
The hypothetical 20% increase in engine weight for 20% increase in thrust keeps the engine thrust-to-weight same, but gives a huge boost to the aircraft's thrust-to-weight ratio.
 

Jackd

New Member
Joined
Jul 27, 2018
Messages
741
Likes
804
So, when we define thrust to weight ratio, are we talking about the twr with regards to the jet or the engine?
 

Enquirer

New Member
Joined
Mar 20, 2018
Messages
3,567
Likes
9,357
Is there a way to accomodate a SPJ inside the body of Tejas in Mk1 and Mk1A versions during their midlife upgrade?
I am hoping if it could done in the initial production of Mk1A itself! :)
Here's my take:
External SPJ will weigh twice as much and needs twice as much space as the internal SPJ. That's because external SPJ needs it's own (strong) frame, outer casing, own cooling system, external mounts etc. If the rearragement of the LRUs (to facilitate better maintenance) can create some space for SPJ's components, then perhaps.
This has to be a DRDO jugaad. Outside vendors will obviously sell SPJ as one-unit (external or internal).
But that's my wishful thinking :)
 

Enquirer

New Member
Joined
Mar 20, 2018
Messages
3,567
Likes
9,357
So, when we define thrust to weight ratio, are we talking about the twr with regards to the jet or the engine?
One needs to be clear about which TWR you're talking about - merely engine's or the complete aircraft. But in most cases it's being referred for the entire aircraft.
Some frauds will use it interchangeably to fool others.
For the flight performance TWR of the entire aircraft matters the most!

I see that the fraud is now using even the term 'weight' interchangeably - 30% increase in the weight of car??? BS!!!
 

Jackd

New Member
Joined
Jul 27, 2018
Messages
741
Likes
804
Will the external SPJ be attached to tejas for a specific mission or will it be standard for all jets? Also, is the SPJ required against the JF-17 class jets?
 
Status
Not open for further replies.

Articles

Top