ADA Tejas (LCA) News and Discussions

[G10]

Is Gsh-23 Cannon tested in flight? I think only ground test so far?

 

[TPFscopes]

Is Gsh-23 Cannon tested in flight? I think only ground test so far?

Gsh-23 cannon integration done and tested.
IFR probe is integrated and waiting for Aerial testing.

As I mentioned in my last post, cannon part is completely done.

 

[tejas warrior]

As I mentioned in my last post, cannon part is completely done.

Not exactly. Gun firing trial in air is Pending.

 

[tejas warrior]

Is Gsh-23 Cannon tested in flight? I think only ground test so far?

Yes. Gun firing trial in air is Pending.

 

[tejas warrior]

Gsh-23 cannon integration done and tested.
IFR probe is integrated and waiting for Aerial testing.

IFR probe first needs to clear all flight envelope test before actual Aerial fueling test will start.

Once it completes Flight Envelope test, FOC can be granted. (Actual in flight refulling is not required to be completed before FOC)

 

[tejas warrior]

Source: INDRA
Stealth Capabilities of LCA-Tejas :-
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With many claims of Tejas possessing some degree of Stealth, it was necessary to analyze at how much degree does Tejas really possess stealth. To begin with Tejas has a Radar Cross Section of 0.5 meter square ( public available figure ) which is among the lowest in 4th Generation Fighter Class. Tejas also possess design advantages as Tejas has a smooth upper wing body blending possessed by other modern aircrafts like Rafale,Eurofighter Typhoon,F-22,PAK-FA and J-20 as well. This helps to avoid early detection as the corner reflections from AWACS aircrafts se searching from above resulting in lower RCS with missiles and external sores hidden under the wing. Tejas also has Y-intake also called bifurcated intake. Since,the engine fan blades are a prominient contributor in RCS, therefore Y intake buries the jet engine inside the fuselage so no engine parts are visible and thus increases the stealth characteristics. Tejas design incorporates a high wing body fuselage blending implemented from behind, resulting bouncing off of searching radar waves from behind.

Tejas canopy is also another feature as radar waves normally enter the cockpit reflects of objects & possibly return to the radar and even the HMD of pilot itself contributes to RCS, and to prevent this the canopy of Tejas is coated with a thin film transparent conductor of Indium Tin Oxide. The coating is thin enough that it has no adverse effect on pilot vision and can reflect the radar waves away from the radar antenna.

Another addition to its varied features is that 90% of surface of Tejas is constructed entirely of carbon composites which are less reflective than metals. The Tejas employs C-FC materials for up to 45% of its airframe by weight, including in the fuselage (doors and skins), wings (skin, spars and ribs), elevons, tailfin,rudder, air brakes and landing gear doors. Composite materials are used to make an aircraft both lighter and stronger at the same time compared to an all-metal design, and the LCA’s percentage employment of C-FCs is one of the highest among contemporary aircraft of its class. Use of composite materials helps to decrease RCS as against an all-metal airframe.
Tejas, being a single-engine fighter is inherently less suspectible to IRST and heat-seeking missiles and its low profile ( smallest 4th generation aircraft by dimensions ) makes it potent in high intensity dogfights. Though not designed as full-scale stealth it do possess some degree of stealth carrying on the legacy of inducing some degree of stealth in latest 21st century aircrafts.

 

[Saichand K]

Not exactly. Gun firing trial in air is Pending.

Dei what the other guy saying is inside info which perhaps is yet to be declared publicly. U are saying relatively old news.

 

[TPFscopes]

Once it completes Flight Envelope test, FOC can be granted. (Actual in flight refulling is not required to be completed before FOC)

Before any test which requires IAF stuff than developer (here ADA) requires IAF's permission. IAF found some hiccup in probe detachment during ground based tests. Than after IAF will provide its Air tanker (il-78MKI) for IFR test.

And for cannon tests, the test (Aerial + Ground) was already done with desired accuracy second phase of fine tuned gsh-23 firing is also planned for july-aug'17

For flight envelope test, 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.

 

[TPFscopes]

KH-2018 (LSP-8) landing back after a test sortie with the IFR.
Slowly but steadily, these tests will culminate in dry and wet engagement to the feeder machine.

 

[abingdonboy]

Once it completes Flight Envelope test, FOC can be granted. (Actual in flight refulling is not required to be completed before FOC)

Is IFR part of FOC criteria? AFAIK it isn't.

 

[tejas warrior]

Is IFR part of FOC criteria? AFAIK it isn't.

Flight Envelope Test along with IFR Probe is required for FOC.

Actual refueling test can happen later.

 

[tejas warrior]

Dei what the other guy saying is inside info which perhaps is yet to be declared publicly. U are saying relatively old news.

What I'm saying is genuine released information by valid sources.

Can't comment much on inside info.

 

[TPFscopes]

The requirements for FOC are:

1. Firing of guided missile(BVRAAM) in its guided mode. (Done)
2. In flight refuelling. (Integration done, test remaining)
3. Gun firing while in flight. (Second phase remaining)

Officially, there is no specific given time or month with FOC. But officially both HAL and DRDO and ADA chief has said it is expectes “anytime this year”. The successfull firing of BVRAAM was the initialisation of the FOC process, hence it can be inferred that the FOC has begun and will be completed by second half of this year.

 

[Abhishek Shrivastava]

.

 

[tejas warrior]

KH-2017 (LSP-7) have been one such prototype which has been heavily instrumented for various tasks like stores separation tests, Radar performance evaluation, flight performance evaluations, PVI improvements and to mention the least, for the all important GSH-23 integration and flight test trials. Integration of an Air-to-Air gun is a tedious task because it always throws up unknown challenges to the specific fuselage design.
We dedicate this image to the designers, integration team and the flight test instrumentation team. Fingers crossed for all important ground integration firing trials and subsequent flight test trials.

Jai Hind.

Question: Hasn't the gosh-23 already been integrated on Tejas and ground firing trials have been held? There was a video too. Then what is this ground integration firing trials mentioned here ?

Answer: The earlier one was with a diff prototype. This one with the FOC standard aircraft.

 

[wuzetian]

KH-2017 (LSP-7) have been one such prototype which has been heavily instrumented for various tasks like stores separation tests, Radar performance evaluation, flight performance evaluations, PVI improvements and to mention the least, for the all important GSH-23 integration and flight test trials. Integration of an Air-to-Air gun is a tedious task because it always throws up unknown challenges to the specific fuselage design.
We dedicate this image to the designers, integration team and the flight test instrumentation team. Fingers crossed for all important ground integration firing trials and subsequent flight test trials.

Jai Hind.

View attachment 16906


Question: Hasn't the gosh-23 already been integrated on Tejas and ground firing trials have been held? There was a video too. Then what is this ground integration firing trials mentioned here ?

Answer: The earlier one was with a diff prototype. This one with the FOC standard aircraft.

Where will the gun be located ? This gun can shoot targets on ground only ? Or can it shoot other air borne targets like world war 2 spitfire fighters used to do .

Sent from my Moto G (4) using Tapatalk

 

[abingdonboy]

Where will the gun be located ? This gun can shoot targets on ground only ? Or can it shoot other air borne targets like world war 2 spitfire fighters used to do .

Sent from my Moto G (4) using Tapatalk

Answer contained within the post itself:

Integration of an Air-to-Air gun is a tedious task

 

[TPFscopes]

Where will the gun be located ?

This gun can shoot targets on ground only ? Or can it shoot other air borne targets like world war 2 spitfire fighters used to do .

Both but hv limited rounds(bullets).
Gsh-23 will be a secondary Weapon.

 

[pankaj nema]

Both but hv limited rounds(bullets).
Gsh-23 will be a secondary Weapon.

Hi Recently an IAF Su 30 had shot down a Pakistani Balloon
near Jaisalmer

So that was an Air to Air shooting by this same Gun

SO did the Su 30 Fire Horizontally or Climbed at an Higher Altitude to shoot downwards
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http://www.hindustantimes.com/india...pak-sources/story-1mt2jOD5NlsxLxKGDgmlKI.html

IAF jet fired 97 rounds to shoot down balloon from Pak: Sources

The IAF scrambled a Sukhoi-30 warplane and deployed armed Mi-17 helicopters after radars picked up an “unidentified balloon-shaped object” at a height of 25,000 feet between 10.30am and 11am on Tuesday when the ceremonial parade was in progress in New Delhi. The fighter’s 30mm GSh-301 auto cannon is said to have fired 97 rounds.

 

[wuzetian]

Both but hv limited rounds(bullets).
Gsh-23 will be a secondary Weapon.

Thank you for the detailed answer. I had asked because ,in a video of test of Gsh 23 firing it appeared as if bullets were hitting the ground just below the nose cone , so I thought it was fixed at an angle of 20 to 30 degree to the fuselage .

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