We never had a single failure in 1,500 flights of Tejas: ADE

SOURCE : Economictimes India ensured its place among an elite group of countries making a fighter jet from scratch when the indigenous multi-role Light Combat Aircraft (LCA) Tejas got initial operational clearance this week. A key part in this success was placed by the avionics and flight control systems that were designed by DRDO ’s Aeronautical Development Establishment (ADE). PS Krishnan, distinguished scientist and Director, ADE gives Anirvan Ghosh an inside view of Tejas’s journey and the challenges faced along the way It took the Tejas 1,500 test flights and 23 years of development to get to this point. Isn’t that too long? You have to see that it started as a thought process in 1983 and there was no funding at that point. For the next ten years, we firmed up the requirements and then went into project definition phase. We went to France and Germany and took their expertise in fixing up the aerodynamic configuration. Post that we were ready with a firm proposal and the funding finally started from the second half of 1992. It did take time, but we had to go through the proper processes. Then there were the sanctions after Pokhran II. How did that affect the development of Tejas? Let me be clear — we perhaps got delayed by two years. On the day the sanctions came into force, our team was in the US offices of our partners there (Lockheed Martin and BAE Inc.).
The team was working on integration of software with the hardware of the LCA. Suddenly we were asked to leave the offices, and we were not even allowed to take back the designs we were working on the systems there, and those were almost ready to be tested. We had to again develop it from memory, because we weren ’t allowed to copy our own stuff, which delayed the whole thing. You are saying that you had to spend some time recovering what you had already worked on and then build on it? Exactly. But the sanctions also spurred us on to do better, and to make the entire fighter aircraft on our own. So in the next few years, we did not just recover what we had lost back then, but also went some steps ahead and achieved the expertise that we had tied up with the US companies for. So now we had what they had but need not rely on them anymore. So ultimately that did delay us, but also made us stronger. Was there a point where you were close to losing faith because of the difficulties that cropped up? Never really. When we came back from the US, I was called by Dr APJ Abdul Kalam (who was then the scientific adviser to the Prime Minister). I met him in his office, along with my boss at that time. He asked me directly, “Can you guys do it?” and I replied, “Yes. ” At that time I just thought we could and didn’t think much about the odds. When I did, well of course we were up against quite a few obstacles. What was driving you at that point in the face of those odds and how did you ensure the team stayed motivated? The thought that alternatives simply wouldn ’t do. Here we were making the fly-by-wire system, which would control the aircraft like anautomated system. Procuring the same from MNCs would have firstly cost more and made us just a small cog in the wheel. Here we were staring at odds but we also had the chance to create a new wheel, to invent a new system. This was a challenge we all rose up to. I told my team at ADE that they had a chance to create history and be a part of creating something that had never been done before. They were up for it and responded. In all the 1,500 flights we have had so far, we never had one single failure. Those included Tejas in its stages as tech demonstrators, prototype vehicles and limited series production (LSP). Did you succeed in retaining more of the core team and talent after the pay commissions’s pay hike? That came later when the team had already done a major
portion of the work. Surely, the pay hikes by the government have allowed us to retain talent. Before that some people did move out of the project and went in the private
sector where they were better paid. But when I met them later at some event, they said that they missed working on cutting edge technology and making something entirely new. Now you are working on the Regional Transport Aircraft as well as the unmanned aerial combat vehicle? Yes, we are making the flight control systems for that project which is headed by NAL. The flight control system and data link packages of Aura (unmanned combat aerial vehicle) will be designed and developed jointly by ADE and Defence Electronic Application Laboratory, Dehradun. Many private and public agencies worked on the Tejas. They are now collaborating on the transport aircraft. Does this lead to confusion and delays? No, because the parameters are clearly defined. In fact, this happened smoothly also because of BAE North America. When we were partnering with them, they had formulated the methodology on how various agencies would work, and we followed it rigorously. There are certain things like wake penetration, and others that the IAF chief said need to be ironed out and the deadline is June. Will you be in a position to meet the deadline? Of course, we already have done most of it. There are some control loss trials, which are essential before it can be operationalised. Those flights will be completed before June. No modifications are required as I see it, but then we will have a clearer picture post the tests and then whatever changes are needed will be implemented.