ADA Tejas (LCA) News and Discussions

[Kunal Biswas]

Beauty on HAL Airport ..

2566th flight on 09 May
TD1 : 233 PV1: 242 PV3: 381 LSP1: 74 LSP3: 200 LSP5: 267 TD2 : 305 PV2: 222 PV5: 40 LSP2: 294 LSP4: 114 LSP7: 94 NP1: 22 LSP8 : 78

2543th flight on 29 April
TD1 : 233 PV1: 242 PV3: 381 LSP1: 74 LSP3: 200 LSP5: 259 TD2 : 305 PV2: 222 PV5: 40 LSP2: 294 LSP4: 110 LSP7: 85 NP1: 21 LSP8 : 77

In 10 days - 23 flights.. not bad looks like fast tracking for meeting the FOC schedule..

 

[Indo-Pacific Security]

Its mid-May already. Has anybody got any information on HAL's delivery of first few LCA Tejas to the Indian Air Force? What is the status of their manufacturing?

HAL did promise to produce eight aircraft initially and then increase it later. So how many have been produced and delivered so far?

 

[ersakthivel]

For one particular fake bot who says that that the tejas wing which was designed for high speed cruise is now limited to just mach 1.6,

What is his answer to the question Why the rafale has a top speed less than mig-21? May be rafale wings were not designed for hig speed cruise perhaps,

Some one has to ram the simple idea into that fake expert's head that nowadays people are designing low wing loading high swept leading edge wing angled fighters for high ITR and better transsonic performance in this missile age. They are not designing their wings for mach 2.2 top speeds!!!

AFAIK it is the Tata advanced material which makes many composite structures and NAL has delivered autoclaves to HAL for making composite structures of tejas, What is this fake braying there?

The auto lay software used for tejas composite body parts is being licensed to Airbus for building composite parts for their civilian planes, this guy is talking utter nonsense!!!

if he likes KAI T-50 he can get a license for making it in india and try to shove it down the throat of IAF, Who is stopping him? Will KAI T-50 take off from LEH?

Will T-50 fly with decent weapon loads in the searing heat of rajastan summer and biting cold of LEH?

What is the radome dia of T-50, Will it carry ASEA radar in future?

What is the internal fuel of T-50?


What is the ITR of T-50, what is the wing loading of T-50?

Fools advertise their foolishness by talking more.

 

[abhi_the _gr8_maratha]

Wing loading is a useful measure of
the general maneuvering performance
of an aircraft. Wings generate lift
owing to the motion of air over the
wing surface. Larger wings move more
air, so an aircraft with a large wing
area relative to its mass (i.e., low wing
loading) will have more lift available at
any given speed. Therefore, an aircraft
with lower wing loading will be able to
take-off and land at a lower speed (or
be able to take off with a greater load).
It will also be able to turn faster.

 

[halloweene]

As far as agility is concerned, US
designs have investigated canard
fighter designs extensively with four
different technology demonstrators,
but have found it to be an inferior
layout to the wing tail designs.
Basically, the wing tail designs can be
done with as as good or better
aerodynamic instability. They can be
done with equivalent or better
aerodynamic efficiency. LEXes can
provide better high AoA lift
enhancement than canards. And
wing-tail designs allow for LARGER
tails (vs canards) which improves low
speed handling and high altitude
control authority. The latest
preference is for the lobster tail
design (F-22 and F-35) which situates
the tails extremely aft of the airframe
for high control moments and the
concentration of the heavy engine(s)
near the Cg of the aircraft for minimal
polar moments. In all current US
wing-tail designs (since the F-16) the
tails provide lift not down force at a
level cruising attitude

I think you should source your assumtions, because NASA Dryden tests say the opposite...

 

[abhi_the _gr8_maratha]

I think you should source your assumtions, because NASA Dryden tests say the opposite...

if it says opposite then sir , then can you answer me following ?
.
why there is no canards on any shingle plane of america
.
why russia doesn't placed canards on su35
.
when drdo placed canards on tejas why it doesn't gave excess lift
.
why chinese not placed canards on j31

 

[abhi_the _gr8_maratha]

Wing loading is a useful measure of
the general maneuvering performance
of an aircraft. Wings generate lift
owing to the motion of air over the
wing surface. Larger wings move more
air, so an aircraft with a large wing
area relative to its mass (i.e., low wing
loading) will have more lift available at
any given speed. Therefore, an aircraft
with lower wing loading will be able to
take-off and land at a lower speed (or
be able to take off with a greater load).
It will also be able to turn faster.

continuing my last post about wing loading
.
low wing loading enables short take off
.
canards is not only gives excess lift but also short take off but tejas have low wing loading so no need of canards for short take off
.
tejas was taste with canards but it doesn't resulted in more lift
.
so having canards was loss of rcs , more weight , more complex structural changes which will have made the project more complex and the gain was nothing

 

[halloweene]

beginner's aid (there are a lot of studies)
NASA Armstrong Fact Sheet: Highly Maneuverable Aircraft Technology | NASA

 

[abhi_the _gr8_maratha]

beginner's aid (there are a lot of studies)
NASA Armstrong Fact Sheet: Highly Maneuverable Aircraft Technology | NASA

good article sir but though it doesn't prove canard good , want to ask some question
.
.
the article says ,they tested it in 1983, so many aircrafts are created by america after that eg f22 , and f35 in design state , why don't they used radar
.
though it have high maneuveable but its speed was just 1.4 mach , even lesser than tejas ( which is tested in hot condition, if that himat is tested in hot indian condition, it will be just 1 mach
.
.
drdo tested canards on tejas but no result
.
it also doesn't answered why su35 and j31 have no canards when there previous one have
.
the cost of himat is 17 million dollar in 1983 which today will be near to 70-80 million without any driving capability and radar .

 

[abhi_the _gr8_maratha]

some modification in my reply number #2730 @haloweene sir
.
when I said 70 -80 million , it is price of today( can be wrong, correct me if it is wrong)
.
and it is FIGHTING CAPACITY instead of driving capacity which I wrote mistakenly

 

[abhi_the _gr8_maratha]

Lca outpasses kai t50 cause radar and engine is same but the avionics, hmds etc capability of tejas is better plus the rcs of tejas is low and later aesa will be fitted on tejas
.
t50 is based on f16. And everyone knows tejas outflies f16
.
tejas have better fly by wire than t50

 

[abhi_the _gr8_maratha]

and cost of tejas is just 25 million dollar( which we can pay in rupees ) and cost of t50 is 30 million dollar

 

[Twinblade]

Its mid-May already. Has anybody got any information on HAL's delivery of first few LCA Tejas to the Indian Air Force? What is the status of their manufacturing?

HAL did promise to produce eight aircraft initially and then increase it later. So how many have been produced and delivered so far?

According to the head of certifying agency, CEMILAC, SP1 was doing ground runs early in April, SP2 will be built by June.

LCA:
LCA is marching towards FoC.
All the design issues on lca navy has been completed. any issues arising out of flight testing will be addressed.
NP2 will be flying much before this year end.
SP1 is already for ground run and SP2 in assemble stage. BVR trails will be much before end of 2014
In aeronautics many of the LRUs on LCA are indigenized. We continue to improve the indigenous content to 80 %. Efforts are on.
LCA MK2 design phase is completed. we are in the process of releasing drawings for production and the program is jointly progressed along with the users.
We have demostrated 1.6 M in LCA and the it is also the same for MK2
LCA Mk2- We will initiate first flight in 2017 and production in 2019
LCA Mk-2 is an EW platform.
AESA for LCA: The design phase is completed. Many of the past products like TR modules can be used here for realising the AESA. The flying test bed that drdo plans to acquire will accelerate the devlopment
Yes Astra on Mk-2. The work is on the fast track.
LCA Mk-2 is more a product improvement on Mk-1. We are not contemplating major design changes. The future products initiated will have the option of new flight control mechanism.

 

[Twinblade]

Beauty on HAL Airport ..

First picture with the centreline tank.

 

[laughingbuddha]

First picture with the centreline tank.

Looks small. What capacity? Is this one made for supersonic speed?

 

[halloweene]

Delta-Canards are quite a complicated solution to use. SAAB and Dassault already had extensive experience about it. And after problems during development (including a crash), Dassault helped SAAB with FCS. (Eurofighter is a particular case, with its long arm canards that were to be compensated by TVC).
I dont say this is a perfect solution, any airplane is a compromise.
Generally speaking for example moving canards are not so good for RCS. That is why if MMRCA is signed, a new composite tech is being implemented for building new canards... Etc. You have nothing for free.

 

[abhi_the _gr8_maratha]

The aircraft is fitted with a night vision
compatible glass cockpit with Martin
Baker (UK) zero-zero ejection seats.
The cockpit has two 76mm×76mm
colour liquid crystal multifunction
displays developed by Bharat
Electronics, a head up display
developed by the government-owned
Central Scientific Instruments
Organisation (CSIO) in Chandigarh, a
liquid crystal return-to-home-base
panel and keyboard. The pilot also has
a helmet-mounted display and sight
(HMDS). The hands on throttle and
stick control system minimises pilot
workload and maximises situational
awareness.
The aircraft has a quadruplex fly-by-
wire digital automatic flight control.
The navigation suite includes Sagem
SIGMA 95N ring laser gyroscope inertial
navigation system with an integrated
global positioning system.
The communications suite includes
VHF to UHF radio communications with
built-in counter-countermeasures,
air-to-air and air-to-ground data links
and a HAL information friend-or-foe
interrogator. The cockpit is fitted with
an environmental control system
developed by Spectrum Infotech of
Bangalore. The avionics suite has an
integrated utility health-monitoring
system, ground proximity warning
system, terrain referenced navigation
system, instrument landing system,
global positioning system, stores
management system and three 1553B
32-bit mission computers.

 

[abhi_the _gr8_maratha]

Delta-Canards are quite a complicated solution to use. SAAB and Dassault already had extensive experience about it. And after problems during development (including a crash), Dassault helped SAAB with FCS. (Eurofighter is a particular case, with its long arm canards that were to be compensated by TVC).
I dont say this is a perfect solution, any airplane is a compromise.
Generally speaking for example moving canards are not so good for RCS. That is why if MMRCA is signed, a new composite tech is being implemented for building new canards... Etc. You have nothing for free.

now there you are saying any plane is compromise
.
but why people don't compromise of range of tejas when its other capacities are one of best in world and best in light category and equal to many in medium category (=gripen cd and >j10,j11)
.
.
and a tejas costs 25 million dollar though compromise part is range
.
we are saying over 20 billion dollar for 126 compromised planes !

 

[abhi_the _gr8_maratha]

The Electronics Research and
Development Establishment and HAL
have jointly developed the aircraft's
multimode radar. The radar has
multiple target search and track-
while-scan and ground-mapping
modes of operation. The radar
incorporates pulse Doppler radar with
Doppler beam shaping, moving target
indication and look-up / look-down
capability. The radar is mounted in a
Kevlar radome.

 

[halloweene]

now there you are saying any plane is compromise
.
but why people don't compromise of range of tejas when its other capacities are one of best in world and best in light category and equal to many in medium category (=gripen cd and >j10,j11)
.
.i kindly invite you to read the three-series of articles in favour of Rafale on Ottawa citizen blog. We'll talk after please?
and a tejas costs 25 million dollar though compromise part is range
.
we are saying over 20 billion dollar for 126 compromised planes !

.i kindly invite you to read the three-series of articles in favour of Rafale on Ottawa citizen blog. We'll talk after please?

And none of us know the real value of the market, what is included etc. 20 billions plus is just hot air.
It COULD be such a value if you include the ToT and industrialization costs (you don't train people or build factory for free), but sincerely i have no ideas.