LCA News and Discussions

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sum
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Re: LCA News and Discussions

Postby sum » 26 Apr 2012 14:31

^^ I saw a MiG-21 flying around very noisily

kittoo
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Re: LCA News and Discussions

Postby kittoo » 26 Apr 2012 15:08

Will it fly above Sarjapur area?

JTull
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Re: LCA News and Discussions

Postby JTull » 26 Apr 2012 15:23

WIll it fly over London?

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Re: LCA News and Discussions

Postby Boudhayan » 26 Apr 2012 15:30

^^ Common Man, it will be having it's first flight tomorrow and you expect it to fly to London ??? Though it will be a dream come true for me atleast if it can do that :D

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Re: LCA News and Discussions

Postby Lalmohan » 26 Apr 2012 15:37

i think it will fly to london via ulan bator and timbuktoo
definitely

JTull
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Re: LCA News and Discussions

Postby JTull » 26 Apr 2012 15:52

So long as it passes over Karachi on the way! :mrgreen:

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Re: LCA News and Discussions

Postby Boudhayan » 26 Apr 2012 16:15

JTull wrote:So long as it passes over Karachi on the way! :mrgreen:


And drops a single TN pataka there just for sharing the celebration of their recent successful launch of the green colored ding dong mizzile

OT discussion though :mrgreen:

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Re: LCA News and Discussions

Postby SagarAg » 26 Apr 2012 17:18

Its already flying in my mind. :D

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Re: LCA News and Discussions

Postby Abhibhushan » 26 Apr 2012 20:17

SaiK wrote:So, on the testing.. is it not possible do rectraction testing while the fighter is in the state of flying (fixed to some hangar support and bolted down, raised up).. perhaps the engine is throttled for 200kmph creating near real simulations.

?


Retraction of undercarriage is a routine maintenance practice. The aircraft is jacked up on three jacks, a hydraulic power source is connected, and the functioning of the u/c is tested. Of course the engine remains switched off during this process.

SaiK
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Re: LCA News and Discussions

Postby SaiK » 26 Apr 2012 21:13

okay.. srai and abhibushan, what are the host of other factors that impede a retraction[just assuming the risk is not detailed here for the discussion, I understand the part of risk, and it is safer that way].. I am trying to understand the parameters that would play in. thx

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Re: LCA News and Discussions

Postby saje » 26 Apr 2012 21:35

Here's wishing the NP-1...

Image

A happy take-off!!

Image

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Re: LCA News and Discussions

Postby Bala Vignesh » 26 Apr 2012 22:11

Anybody planning on being near the NFTC for the first flight??? I am thinking of going down there and seeing the beauty take off for the first time..
Also, is this the first time that the specific time is announced publicly???

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Re: LCA News and Discussions

Postby SaiK » 26 Apr 2012 22:31

^^Is that SBTF@INS HANSA?

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Re: LCA News and Discussions

Postby Bala Vignesh » 26 Apr 2012 22:54

Yup.. Here is the link to the article

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Re: LCA News and Discussions

Postby naird » 26 Apr 2012 23:05

I presume its going to be a take off from runway ...and not from SBTF ?? That would be too much for a first flight...

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Re: LCA News and Discussions

Postby disha » 26 Apr 2012 23:18

SaiK wrote:okay.. srai and abhibushan, what are the host of other factors that impede a retraction[just assuming the risk is not detailed here for the discussion, I understand the part of risk, and it is safer that way].. I am trying to understand the parameters that would play in. thx


SaiK, it is not the "retraction", but "extraction" of the landing gear after fully retracted that might be a problem. There are several cases, including one where Ravi Shastri's Audi was featured when a plane has the landing gear stuck wholly or partially and hence is difficult to land. If you have only one flying bird, it is better to wait until one is confident that the landing gear will not get stuck and the break wheels will be working after a flight regime (or several such).

There are several factors why a landing gear might get stuck. Dust/grime after take off affecting some sensitive parts for eg.

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Re: LCA News and Discussions

Postby Raman » 26 Apr 2012 23:31

Some issues that might arise
- hydraulic + mechanical issues: there are many moving parts
- gear/door operation with aerodynamic loads imposed on gear and doors
- change in aerodynamics (and hence impact on flight control laws) especially during extension/retraction transitions
- pilot workload: there are a lot of parameters that a test pilot has to monitor on first flight and worrying about possible gear emergencies adds additional workload

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Re: LCA News and Discussions

Postby SaiK » 27 Apr 2012 01:32

okay, I see the change in aerodynamics and corresponding control law functioning aspects is the special case that would not have been cleared out on iron bird testing. [control laws have changed for naval LCA is what I read]

yes, that is a good decision to keep landing aspects safe!

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Re: LCA News and Discussions

Postby Kartik » 27 Apr 2012 01:36

naird wrote:I presume its going to be a take off from runway ...and not from SBTF ?? That would be too much for a first flight...


that SBTF is at INS Hansa in Dabolim, Goa. the first flight of NP-1 is to take place from Bangalore. No SBTF take off right now. First they'll validate its basic flying qualities then only take it to INS Hansa for take-off trials using the SBTF.

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Re: LCA News and Discussions

Postby Kartik » 27 Apr 2012 01:40

SaiK wrote:okay, I see the change in aerodynamics and corresponding control law functioning aspects is the special case that would not have been cleared out on iron bird testing. [control laws have changed for naval LCA is what I read]

yes, that is a good decision to keep landing aspects safe!


The change in aerodynamics has nothing to do with the landing gear. The Iron Bird would've been used to test that it works.

However, the kinematics of the landing gear retraction and its opening are now different as a result of the different attachment points and different design and hence they don't want to add any more risk to the first flight, such as the possible risk of it retracting and then not coming back out due to any unforeseen issue in flight.

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Re: LCA News and Discussions

Postby suryag » 27 Apr 2012 04:28

I remember Air Marshal Philip Rajkumar mentioning in the "The Tejas Story: The Light Combat Aircraft Project" that landing gears are one thing that do not follow the rules of gravity(pun intended i guess) so they are never retracted on the first flight.

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Re: LCA News and Discussions

Postby suryag » 27 Apr 2012 08:46

Bluru vaasiyon how is weather down there? half an hour more to go ?

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Re: LCA News and Discussions

Postby suryag » 27 Apr 2012 08:59

suryag wrote:Bluru vaasiyon how is weather down there? half an hour more to go ?


bluru weather http://www.weather.com/weather/today/Ba ... a+INXX0012

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Re: LCA News and Discussions

Postby Indranil » 27 Apr 2012 09:53

suryag wrote:I remember Air Marshal Philip Rajkumar mentioning in the "The Tejas Story: The Light Combat Aircraft Project" that landing gears are one thing that do not follow the rules of gravity(pun intended i guess) so they are never retracted on the first flight.


Is never retracted will be factually wrong ... is often avoided would be more right.

varunalh
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Re: LCA News and Discussions

Postby varunalh » 27 Apr 2012 10:01

Deccan Herald website reporting that the naval variant took off at 9.55AM.

vina
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Re: LCA News and Discussions

Postby vina » 27 Apr 2012 10:03

--Cross post

Good. Now that we have an AESA radar in space with SAR implemented, and the DRDO Awacs flying (I think it is L Band) and in today's Al-Hundi right at the first page there was an advert from Astra Microwave congratulating ISRO ,with an Oh.. Many of our components are on the RISAT :mrgreen: .. I guess that they have supplied some of the microwave components.

All in all good. Now to get over the hump and develop a X band fighter sized tactical AESA radar with all the bells and whistles, as an enhancement of the MMR on the LCA !1 :(( :((

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Re: LCA News and Discussions

Postby neerajb » 27 Apr 2012 10:31

Bala Vignesh wrote:Yup.. Here is the link to the article


Wow! Last when I saw it in Dec 2011, it was nothing more than a levelled strip of land adjacent to the main runway, they have built it pretty fast.

Cheers...

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Re: LCA News and Discussions

Postby SidSom » 27 Apr 2012 10:58

Guys any news.... Any spies in and around HAL (where is Tarmak when you need him :( ). Cant wait for the news...

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Re: LCA News and Discussions

Postby pralay » 27 Apr 2012 11:05

varunalh wrote:Deccan Herald website reporting that the naval variant took off at 9.55AM.

mia varunullah can you post link? i dont see it on deccan herald.

Did the bird touch down?
Where are our birdwatchers from banglore?

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Re: LCA News and Discussions

Postby member_22510 » 27 Apr 2012 11:12

at around 10:30 today on airport road, i heard a jet pass by, but couldn't trace it in the sky. could be the LCA.

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Re: LCA News and Discussions

Postby Bala Vignesh » 27 Apr 2012 11:29

Bunked office to catch the sight of NLCA if it flies over my house but no action so far..

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Re: LCA News and Discussions

Postby rajanb » 27 Apr 2012 11:37

Deccan Herald had it on the top of the page, on the ticker, but it has been removed now. I checked at 10:10 AM.

http://www.deccanherald.com/

Claiming it took off at 0955 Hrs. So was it an over enthu reporter.

It should have landed at 1015hrs too, but no sight of it over CBD.

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Re: LCA News and Discussions

Postby symontk » 27 Apr 2012 11:38

heard a jet taking off around 9.56AM from the conf room (near marathahalli side), cannot confirm if its LCA, but sure its not Mig-21

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Re: LCA News and Discussions

Postby Bala Vignesh » 27 Apr 2012 12:04

Livefist confirms..
LCA Navy Takes off
Just the headline and no image or story..

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Re: LCA News and Discussions

Postby varunalh » 27 Apr 2012 12:09

^^^^^
Livefist is updated with more content but no image yet..
Looks like the bird will be back in another couple of minutes.

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Re: LCA News and Discussions

Postby suryag » 27 Apr 2012 12:10

Flight test update

LCA-Tejas has completed 1837 Test Flights successfully. (26-April-2012).
(TD1-233,TD2-305,PV1-242,PV2-222,PV3-339,LSP1-74,LSP2-206,PV5-36,LSP3-49,LSP4-49,LSP5-80,LSP7-2)

from

LCA-Tejas has completed 1835 Test Flights successfully. (21-April-2012).
(TD1-233,TD2-305,PV1-242,PV2-221,PV3-339,LSP1-74,LSP2-206,PV5-36,LSP3-48,LSP4-49,LSP5-80,LSP7-2)
Last edited by suryag on 27 Apr 2012 12:12, edited 1 time in total.

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Re: LCA News and Discussions

Postby SidSom » 27 Apr 2012 12:11

All Fingers Crossed......Bala Any visuals.. Time to stand on the balcony and not blink for the next 20-30 minutes. Immediate report of Landing requested :)

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Re: LCA News and Discussions

Postby suryag » 27 Apr 2012 12:13

Rajanb sir you are on the landing path right? please get to the window with camera

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Re: LCA News and Discussions

Postby sarabpal.s » 27 Apr 2012 12:24

Waiting for first landing pics, Dear all

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Re: LCA News and Discussions

Postby varunalh » 27 Apr 2012 12:24

Just saw it come in for landing (~ 12.29PM). Chase a/c was a Hawk.


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