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.

zebra7

Regular Member
Joined
Dec 24, 2016
Messages
63
Likes
91
Problem is that we are expecting too much from this single engine LCA and fail to understand the exact requirement of the IAF and the real purpose of lca.

LCA is the program started to develop the capability to design the fighter plane and develop the indegenous aviation industry, and let indian industry grow to make the sub components and in this process develop a fighter plane which could replace the mig 21, the working horse of IAF. Its been a long road, and its really amazed me that lca survives despite such effort to kill this program. There is no point discussing why lca is delta design, why delta have more drag, why ada develop fighter plane which have limited range, why no cannard etc etc. Because to understand all this we have to search the history and doors of mind open -- like because tailless delta have very less control surface which make it less complicated to developed FBW and short take off and higher lift during take off and to use the mig 21 infrastucture.

now for the iaf, the most dire need is the replacement of the Mig 23, mig 27 and mig 21. when we are saying mig 21 i am not including mig 21 bison for the time being which is due to phrased out by 2024. of this mig 23 have been phrased out, and mig 27 and older mig 21 needs to be replaced. if we look at the roles of these planes, mig 23bn and mig 23 mf were ground attack and interceptor/air superiority respectively. For airsuperiority iaf now have MKI's and mig 29UPG, for interceptor role, the mig's have been upgraded to bison standard and take care of that role for the time being supported by mirrage 2000/2000 upg. For the CAS and tactical interdiction we need to phrased out mig 21MF/M which LCA Tejas mk-1(without internal IRST, jammer) could supplement. Now the big void which is 149 unit of mig 23 has to be fill quickly, and sorry to say that now IAF have to think quickly how they want to transint themselfself to which structure aka role based or only multirole fighter plane structure. If they want to go to the role based, which I think they will then, the best way is to go by converting the present DPSA (Deep Strike Aircraft) Jaguar into the ground attack role and go for the whole 140 units of Jaguar units left to the Darin III upgrade instead of 70 odd units. For the single engine CAS and tactical interdiction role go with the LCA MK-1 and Combat HAWK of HAL/BAE which will lower the cost of operation. Go for the LCA MK-2 with superior engine, internal jammer/IRST/OBOG/aerial refuel probe for the multirole and interceptor cum dogfighter capability to replace mig 21 bison 2024 onwards and with full future plan/aim to upgrade it further to replace the MIG-29UPG and Mirrage 2000 UPG too, such as fibre optics based FBW, F414 EPE, TVC.

There are some members who thinks of ADA's AMCA -- for them the plane like AMCA is never going to be cheaper operation cost, thus should be meant for the special operation such as to strike the heavily guarded target during the early stage of the war to breach the enemy air defence. And those supporting Gripen and F-16 block 60/70 they should understand that the requirement is huge and even with the huge order and make in india or tot those options have to be gauged with the financial point of view and in my view never going to be the cheaper one and should consider the infrastructure and spares/weapons also.
 

zebra7

Regular Member
Joined
Dec 24, 2016
Messages
63
Likes
91
Brake chute is there and will remain. However in this display pilot is displaying efficiency of aerodynamic braking along with mechanical ( wheel brakes). This goes to show superior design features that is there in Tejas.

The brake chute will still be used in case of emergency landings and also when operating out from air bases situated at high altitudes where air is thin.
It depends on the length of the runway where it is landing. And both chute and brakes compliments each other and no one uses mechanical brakes at high speed, rather it is only applied, when the speed slows downs below a limit.
 

Rahul Singh

Senior Member
Joined
Mar 30, 2009
Messages
3,652
Likes
5,790
Country flag
no one uses mechanical brakes at high speed,
Wheel brakes are not parking brakes only, they are applied specially when executing short landings. In the video pilot is deliberately (by pulling back on stick to push aircraft in pitch-up position) keeping his nose wheel up to increase the drag hence reducing the speed faster, in other words executing something called Aerobraking. And during this maneuver wheel brakes are also used in conjunction. Only trick is to have quality mechanical brakes which can dissipate heat fast enough to not catch a fire.
 

zebra7

Regular Member
Joined
Dec 24, 2016
Messages
63
Likes
91
Wheel brakes are not parking brakes only, they are applied specially when executing short landings. In the video pilot is deliberately (by pulling back on stick to push aircraft in pitch-up position) keeping his nose wheel up to increase the drag hence reducing the speed faster, in other words executing something called Aerobraking. And during this maneuver wheel brakes are also used in conjunction. Only trick is to have quality mechanical brakes which can dissipate heat fast enough to not catch a fire.
Really, lol at such high speed Lage raho mamoo.
 

Rahul Singh

Senior Member
Joined
Mar 30, 2009
Messages
3,652
Likes
5,790
Country flag
Really, lol at such high speed Lage raho mamoo.
Dada ji, there is no such thing as high speed or low speed but appropriate speed -depending on type of aircraft and length of runway- which is not as high as touch down speed nor as low as taxi speed. In a series at a perfect position in a sequence.
 

Kunal Biswas

Member of the Year 2011
Ambassador
Joined
May 26, 2010
Messages
31,122
Likes
41,042
According to sources involved with the project, Derby missile will be fired in a guided mode during the first quarter of the year, clearing a key FOC parameter.
“Software upgradation might happen even after FOC. We have already integrated the air-to-air-refuelling-probe on LSP-8 and it will soon undertake trials. Flight envelope checks are being done to see any variations in the aerodynamics performance,” says the official.
He said the engineers wanted to ensure that there is absolutely no influence on the air data parameters, post integration of the refuelling probe.“First dry runs will be executed followed by wet fuel transfer. It is a complex mission,” adds the official.
The Russian gun (Gsh-23) has already been integrated on LSP-7 for the ground butt firing trials at Nasik. This will be followed by flight trials in the second quarter of the year.

The envelope expansion (8G) has already been achieved at the Bahrain International Air Show last year. The Angle of Attack (AoA) of 26 degrees has also been achieved, with the actual requirement being 24 degrees.

Source : Anantha Krishnan

Please enter a message with at least 30 characters.
 

PD_Solo

The only one
Regular Member
Joined
Jun 16, 2016
Messages
502
Likes
620
Country flag
Can some expert explain as why hot weather trials are at Leh where temperature never exceeds may be 30-35 degrees.
 

ezsasa

Designated Cynic
Mod
Joined
Jul 12, 2014
Messages
31,926
Likes
148,106
Country flag
Can some expert explain as why hot weather trials are at Leh where temperature never exceeds may be 30-35 degrees.
Not an expert, maybe it has to do with the altitude.

Higher altitude means less oxygen, engine performance during takeoff and landing has to be optimal if a squadron has to be stationed there for a longer period.
 

Abhijeet Sinha

Regular Member
Joined
Dec 24, 2016
Messages
10
Likes
15
Country flag
Can some expert explain as why hot weather trials are at Leh where temperature never exceeds may be 30-35 degrees.
It is to do with air density.
With increase in altitude and temperature the air density decreases, this negatively affects the performance.
Therefore for aircraft and helicopter it is necessary to demonstrate that they can perform well in these conditions.
Also, takeoff condition usually has the toughest requirement withinin the whole flight envelope so the tests are done at high altitude airbases during hots days.

You can recall last year back a LCH was being tested in Siachen in hot and high conditions.
 

rotormagic

Regular Member
Joined
Dec 22, 2014
Messages
18
Likes
48
Can some expert explain as why hot weather trials are at Leh where temperature never exceeds may be 30-35 degrees.
It is to test "Hot&High" simultaneously. Leh is 3.2 kms (approx) and for 3kms plus it provides temperatures over 27deg C + for few months in summers.

Aircraft performance graphs and even engine graphs are measured in Density Altitudes. High Altitudes and High Temperatures create the most adverse Density Altitude of all available runways in India. If an aircraft can handle Leh, it can handle the rest of the places in normal operations.
 

rotormagic

Regular Member
Joined
Dec 22, 2014
Messages
18
Likes
48
Can some expert explain as why hot weather trials are at Leh where temperature never exceeds may be 30-35 degrees.
It is to test "Hot&High" simultaneously. Leh is 3.2 kms (approx) and for 3kms plus it provides temperatures over 27deg C + for few months in summers.

Aircraft performance graphs and even engine graphs are measured in Density Altitudes. High Altitudes and High Temperatures create the most adverse Density Altitude of all available runways in India. If an aircraft can handle Leh, it can handle the rest of the places in normal operations.
 

tejas warrior

Senior Member
Joined
Jan 4, 2015
Messages
1,268
Likes
3,723
Country flag
I was just reading recent report by Anantha Krishnan again and was positively surprised by last lines. HAL hopes to deliver SP6 by March-17.


Is it really possible ?

HAL hopes to take the Tejas deliver tally to six aircraft (SP-1 & SP-2 included) by end of March 2017. Components up to SP-9 are already in different stages of assembly, coupling and equipping on various jigs at the LCA Division.

http://english.mathrubhumi.com/mobile/n ... -1.1373414
 

Chinmoy

Senior Member
Joined
Aug 12, 2015
Messages
8,748
Likes
22,760
Country flag
I was just reading recent report by Anantha Krishnan again and was positively surprised by last lines. HAL hopes to deliver SP6 by March-17.


Is it really possible ?

HAL hopes to take the Tejas deliver tally to six aircraft (SP-1 & SP-2 included) by end of March 2017. Components up to SP-9 are already in different stages of assembly, coupling and equipping on various jigs at the LCA Division.

http://english.mathrubhumi.com/mobile/n ... -1.1373414
SP4 is to be delivered by this month, then it means SP5 by Feb and SP6 by March i.e. 1 aircraft each month? Well, I'd keep my thoughts reserved. But if something like this happens, then HAL do deserve an award... :biggrin2:
 

abingdonboy

Senior Member
Joined
Sep 13, 2010
Messages
8,039
Likes
33,588
Country flag
SP4 is to be delivered by this month, then it means SP5 by Feb and SP6 by March i.e. 1 aircraft each month? Well, I'd keep my thoughts reserved. But if something like this happens, then HAL do deserve an award... :biggrin2:
1 ac/month would be an enourmously impressive performance from HAL and would certainly shut up many idiots.

HAL should be aiming to deliver 14-16 ac/year.
 

tejas warrior

Senior Member
Joined
Jan 4, 2015
Messages
1,268
Likes
3,723
Country flag
1 ac/month would be an enourmously impressive performance from HAL and would certainly shut up many idiots.

HAL should be aiming to deliver 14-16 ac/year.
Let them first reach target of 8/year.

I'm not sure if additional line for making 16 have been approved by MOD, so cant blame HAL.
 
Status
Not open for further replies.

Latest Replies

Global Defence

New threads

Articles

Top