Tejas LSP-8-maiden-flight-successful

[Jagdish]

WISH THIS IS NOT TRUE , IF YES THEN ADA/HAL PLZ WORK DOUBLE TIME & RECTIFY HUMBLE REQUEST

Tejas LSP-8 warms up for first flight amid uneasy calm | Widespread concern over inferior build-standard quality of Tejas

The near-perfect production standard version of India's light combat aircraft (LCA) Tejas is ready for its first flight at the Hindustan Aeronautics Limited (HAL) airport in Bangalore. Sources confirm to Express on Wednesday that the Flight Readiness Review Board (FRRB) has now cleared the limited series production (LSP-8) of Tejas for its flight, with a rider that it needs to undertake one more engine ground run (EGR), low-speed taxi trial (LSTT) and high-speed taxi trial (HSTT). "We are closing in and the flight is expected in the next couple of days, if there are no last-minute surprises," sources said.
The last LSP variant of Tejas is gearing up for the flight just after defence minister A K Antony recently asked its makers not to extend the Final Operational Clearance (FOC) for Tejas, sighting that "there are no substitute for self-reliance." The LSP-8 is of the initial Operation Clearance (IOC) configuration and marked for the Indian Air Force (IAF) pilots to undertake flight evaluation trials, along with LSP-7.
Quality concerns: Insiders associated with the project, however, say that there are many build-standard quality concerns of Tejas, all pointing towards HAL. "We have huge concerns with the inferior standards of Tejas. The aerodynamics differences of the contour surfaces are a concern. The ADA-HAL team is addressing the issue, with actual readings and predicted values telling different stories," says a senior IAF official.
The cracks in the project are becoming wide open with the Aeronautical Development Agency (ADA) refusing to entertain any media queries on Tejas. Sources say that there's an uneasy calm prevailing in the programme, with increasing doubts being raised by various agencies over the quality of Tejas being produced by HAL.
HAL sources said that any modification introduced on the aircraft has to undergo an extensive evaluation and validation by designers and certification agencies, before the production agency can implement it. "The exercise is a time-consuming one. Accordingly, the LSP-8 is now ready to take to the skies with all the improvements introduced over the last few years," HAL sources said.
The Deputy Chief of Air Staff is reviewing the programme in Bangalore on Thursday with the heads of all stakeholders, including HAL and ADA, to be present.

Tarmak007 -- A bold blog on Indian defence: Tejas LSP-8 warms up for first flight amid uneasy calm | Widespread concern over inferior build-standard quality of Tejas

 

[arnabmit]

Old news dude. It already flew yesterday.

WISH THIS IS NOT TRUE , IF YES THEN ADA/HAL PLZ WORK DOUBLE TIME & RECTIFY HUMBLE REQUEST

Tejas LSP-8 warms up for first flight amid uneasy calm | Widespread concern over inferior build-standard quality of Tejas

 

[Jagdish]

Old news dude. It already flew yesterday.

Cool thanks:thumb:

 

[tramp]

Any flight trial video of Tejas LSP-8?

Old news dude. It already flew yesterday.

 

[arnabmit]

None on the net yet

Any flight trial video of Tejas LSP-8?

 

[ersakthivel]

Tarmak007 -- A bold blog on Indian defence: LSP-8 maiden flight successful



@p2prada @ersakthivel
So how long it is going to take to induct Tejas?

All design works related to Tejas mk-1 are over .the final production version LSP-8 is now flying. And LSP-7 is already in IAF hands. And the production line that produced the LSps will be modernized and converted to Serial production assembly line. The few remaining glitches like better aerodynamic finish of wing parts and some quality issues with few sub assemblies are being worked out.It won't cause much delay. The IOC-2 and FOC timelines won't affect the production of Tejas as it has already conformed to it's design specs during the 2000 odd flights that it has already made and further opening of the flight envelope won't be any constraint on Tejas serial production.

 

[ersakthivel]

a pic in here says aoa is 20. is this final?

In it's first flight it flew at an AOA of 20 deg is the press release. it is not it's final AOA. it's finalcombat usable AOA is to be 24-26 deg according to naval test pilo't statement at Aero India-2013. Foc standard is not a different manufacturing model as many people mistake it to be. Since FCS controlled unstable deltas are essentially flown by computers that give commands to the control surfaces more than 20 times a second , the test flights are controlled by design to be flown within certain lower performance limits.

Once the performance of FCS is validated fully within the partial envelope , the flight envelope is expanded bit by bit to it's full performance specs.No new design features are needed to be incorporated on the fighter to lift it to the level of FOC standard. Every single production version from LSP-7 will have all the design features needed to be able to reach FOC level. For example even though tejas has never been tested beyond 22 deg AOA till now , every prototype can retain rudder control up to 30 deg and remain controllable as per design. this capacity is there.But till it is fully validated in FOC they all will be limited to fly below 22 deg AOA.

But till FOC is reached they will be artificially constrained to operate within the IOC flight envelope. That's all.

 

[Somreet Bhattacharya]

Does the golden tint on the cockpit glass actually reduce the RCS?? I thought there is no direct relation to the RCS...is it?

 

[Yusuf]

That there has been no crash of any prototypes gives confidence that the quality issues may be unfounded

 

[Kunal Biswas]

No crashes thanks to designers and pilots, Manufaturing quality of HAL / OFB are not very good..

Though when pressurized they give good results..

That there has been no crash of any prototypes gives confidence that the quality issues may be unfounded

 

[tramp]

In it's first flight it flew at an AOA of 20 deg is the press release. it is not it's final AOA. it's finalcombat usable AOA is to be 24-26 deg according to naval test pilo't statement at Aero India-2013. Foc standard is not a different manufacturing model as many people mistake it to be. Since FCS controlled unstable deltas are essentially flown by computers that give commands to the control surfaces more than 20 times a second , the test flights are controlled by design to be flown within certain lower performance limits.

Once the performance of FCS is validated fully within the partial envelope , the flight envelope is expanded bit by bit to it's full performance specs.No new design features are needed to be incorporated on the fighter to lift it to the level of FOC standard. Every single production version from LSP-7 will have all the design features needed to be able to reach FOC level. For example even though tejas has never been tested beyond 22 deg AOA till now , every prototype can retain rudder control up to 30 deg and remain controllable as per design. this capacity is there.But till it is fully validated in FOC they all will be limited to fly below 22 deg AOA.

But till FOC is reached they will be artificially constrained to operate within the IOC flight envelope. That's all.

Thanks for the detailed post, ersakthivel

 

[Mariner HK]

Old news dude. It already flew yesterday.

hehe yes... surpriseee

 

[ersakthivel]

Any difference in air intake visible? The LSp-8 air intake looks a bit different in shape and size. or is it just the camera angles?

 

[Jagdish]

 

[Kunal Biswas]

It is different ..

Any difference in air intake visible? The LSp-8 air intake looks a bit different in shape and size. or is it just the camera angles?

 

[p2prada]

a pic in here says aoa is 20. is this final?

Only LSP-8 will handle 20 deg. AoA tests have been moved to FOC stage along with LSP-6. LSP-6 is meant for AoA tests.

Final AoA limitation will eventually be 24 deg for LCA.

Earlier IOC target for AoA was 22deg, but with LSP-6 being moved to FOC, the IOC limits were relaxed.

 

[ersakthivel]

On it's first flight LSp-8 handled an AOA of 20 deg. that's what the news says. this statement has no relation to the ultimate AOA of any LSp or Sp.

Till LSP-6 demonstrates the ultimate AOA of 24 to 26 deg all LSPs and Sps will fly with lower AOA. Once the FCS is validated on LSP-6 for an AOA of 24-26 deg, the same FCS will be ported on to all the LSps and Sps and they will fly at 24-26 AOA.

So any LSP or SP has the airframe capability to handle 24-26 even now. Once it is demonstrated on LSP-6 all of them will at the same AOA 24-26 deg.

 

[Mariner HK]

Our babus must relax induction rules a bit.First Induct with few achivements then make changes So it will have steady production and matured preception on Tejas...

 

[tramp]

Our babus must relax induction rules a bit.First Induct with few achivements then make changes So it will have steady production and matured preception on Tejas...

Let the induction parameters remain constant.. only let them not move the goalpost. That becomes a major headache. We saw that happening in the case of Arjun as well as LCA.

 

[Mariner HK]

tejas flew more than 2000+ hours now we got bettr tejas ...We will get beter in next tejas as well Its high time we mass produce this machine ...And start concentrating on MK2 and Amca with two seperate teams. To cut the timeline..We got lots to learn from chinese . They just induct with few parameters later they refine it... As far as i know they inducted jet trainer in their first flight