LCA News and Discussions
Re: LCA News and Discussions
^^ I saw a MiG-21 flying around very noisily
Re: LCA News and Discussions
Will it fly above Sarjapur area?
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WIll it fly over London?
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^^ 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
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i think it will fly to london via ulan bator and timbuktoo
definitely
definitely
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So long as it passes over Karachi on the way!
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And drops a single TN pataka there just for sharing the celebration of their recent successful launch of the green colored ding dong mizzileJTull wrote:So long as it passes over Karachi on the way!
OT discussion though
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Its already flying in my mind.
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Re: LCA News and Discussions
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 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.
?
Re: LCA News and Discussions
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
Re: LCA News and Discussions
Here's wishing the NP-1...
A happy take-off!!
A happy take-off!!
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Re: LCA News and Discussions
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???
Also, is this the first time that the specific time is announced publicly???
Re: LCA News and Discussions
^^Is that SBTF@INS HANSA?
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Yup.. Here is the link to the article
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I presume its going to be a take off from runway ...and not from SBTF ?? That would be too much for a first flight...
Re: LCA News and Discussions
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).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
There are several factors why a landing gear might get stuck. Dust/grime after take off affecting some sensitive parts for eg.
Re: LCA News and Discussions
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
- 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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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!
yes, that is a good decision to keep landing aspects safe!
Re: LCA News and Discussions
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.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...
Re: LCA News and Discussions
The change in aerodynamics has nothing to do with the landing gear. The Iron Bird would've been used to test that it works.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!
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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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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Bluru vaasiyon how is weather down there? half an hour more to go ?
Re: LCA News and Discussions
bluru weather http://www.weather.com/weather/today/Ba ... a+INXX0012suryag wrote:Bluru vaasiyon how is weather down there? half an hour more to go ?
Re: LCA News and Discussions
Is never retracted will be factually wrong ... is often avoided would be more right.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.
Re: LCA News and Discussions
Deccan Herald website reporting that the naval variant took off at 9.55AM.
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Re: LCA News and Discussions
--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 .. 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
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 .. 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
Re: LCA News and Discussions
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.Bala Vignesh wrote:Yup.. Here is the link to the article
Cheers...
Re: LCA News and Discussions
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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mia varunullah can you post link? i dont see it on deccan herald.varunalh wrote:Deccan Herald website reporting that the naval variant took off at 9.55AM.
Did the bird touch down?
Where are our birdwatchers from banglore?
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Re: LCA News and Discussions
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
Bunked office to catch the sight of NLCA if it flies over my house but no action so far..
Re: LCA News and Discussions
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.
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.
Re: LCA News and Discussions
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
^^^^^
Livefist is updated with more content but no image yet..
Looks like the bird will be back in another couple of minutes.
Livefist is updated with more content but no image yet..
Looks like the bird will be back in another couple of minutes.
Re: LCA News and Discussions
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)
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.
Re: LCA News and Discussions
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
Re: LCA News and Discussions
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
Waiting for first landing pics, Dear all
Re: LCA News and Discussions
Just saw it come in for landing (~ 12.29PM). Chase a/c was a Hawk.