Indigenous jet trainer demonstrates capability to carry out six turn spins
Bengaluru, Jan 6: The Intermediate Jet Trainer (IJT), designed and developed by Hindustan Aeronautics Limited for stage II training of IAF pilots, has successfully demonstrated the capability to carry out six turn spins to the left hand and right hand sides.
The IJT, conceived by HAL as a replacement to the ageing Kirans of IAF fleet, had completed demonstration of its capabilities in terms of altitude and speed envelope, load factor, satisfactory stall characteristics and limited armament capability as required by IAF, much earlier, an HAL statement said on Thursday.
The only pending task was spin testing.
During the course of spin testing, in 2016, the aircraft departed from controlled flight which brought the programme to a temporary halt, it said. However, HAL decided to proceed further to complete the spin testing.
The capability to enter and recover from spin is a necessity for a trainer aircraft in order to familiarise the trainee pilot to recognise departure from controlled flight and the actions required to recover from such situations, the statement noted.
"Achieving satisfactory characteristics during spin and an assured recovery from spin form a part of very crucial flight tests due to its unpredictability", it said.
The spin flight testing is inherently a high risk manoeuvre and therefore progresses incrementally turn by turn. Due to the complex interplay of aerodynamic and inertia forces, the motion of the aircraft in spin is unpredictable and flight testing is the only way to assess the acceptability or otherwise of its characteristics.
Subsequent to the temporary halting of flight tests in 2016, HAL undertook major modifications like shifting the vertical tail aft on the airframe and increasing the rudder area and flight testing resumed in April 2019.
These modifications entailed the use of a new Anti-Spin Parachute system (ASPS) which is mandated for the safety of the aircraft and test crew during spin flight testing. The new ASPS was integrated into the aircraft in July 2020 and the successful streaming of the parachutes were demonstrated in September 2020.
HAL could commence the stall and spin testing of the IJT in its new modified configuration in November 2020, it was stated.
HAL's Director (Engineering and R&D), Arup Chatterjee said that by demonstrating its capability to have six turn spins on both sides the IJT has achieved a major milestone.
He hoped that with the completion of spin certification of HTT-40 and the progress achieved in IJT, HAL will soon have the state-of-the-art trainers for stage I and II training of IAF pilots.
The Intermediate Jet Trainer designed and developed by HAL for stage –II training of IAF pilots has successfully demonstrated the capability to carry out six turn spins to the LH and RH sides. @drajaykumar_ias @SpokespersonMoD @DefProdnIndia @gopalsutar @ANI @PTI_News pic.twitter.com/4YPC0596Fx
— HAL (@HALHQBLR) January 6, 2022
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We've got firepower, don't discount us: CSK head coach Stephen Fleming
Chennai, Mar 29 (PTI): A combative CSK head coach Stephen Fleming stoutly countered the criticism that his team's brand of cricket was getting outdated, saying the team had enough "firepower" and no one should make the mistake of discounting them.
Five-time IPL champions CSK lost to RCB by 50 runs, unable to chase a steep 196/7 set by Rajat Patidar's side on Friday.
CSK's defeat to RCB in the 'Southern Derby' in their own den was their first since the inaugural edition of the IPL in 2008 and it was also their biggest reversal at home thus far.
In response to a question if his brand of cricket was getting outdated, the former New Zealand skipper shot back, "What do you mean, my way of playing (cricket)? Like winning the first game, that's a good way to play. We've got firepower all the way through. I don't understand this question."
"Just because we don't swing (the bat) from ball one and have a little bit of luck go our way, we'll see at the end," said the New Zealander after his team was restricted to 146/8 in 20 overs.
The 51-year-added that CSK should not be "discounted" just because they had lost one match.
"It's a positive brand of cricket, no doubt about it, but don't discount us. It's a silly question."
The coach, however, conceded the team's fielding wasn't of the highest standard on Friday, adding that the opponents came really hard at them.
Patidar's fine half-century and Josh Hazlewood (3/21) excellent bowling, which reduced CSK to 30/3 at the end of six overs, took the wind out of the home team's sails.
"No, we didn't get it right. It's so hard to read (the pitch), but we thought it was going to skid on with the dew, but it actually got a bit tacky. So, it certainly made it harder.
"A couple of half chance, one or two, it's a real chance. It's just a little bit clumsy. They came very hard, and we had opportunities to really peg them back, but we just let them off the hook. A score of 175 would have been more realistic, but we just weren't good," added Fleming.
Fleming also credited Hazlewood for RCB's win, saying he played a decisive role in the victory.
"Hazlewood is an excellent new-ball bowler when there's a bit of bounce. If you look at the conditions the last game we played, there wasn't that type of bounce or seam. So again, we scratch our heads as to what we're going to get, and we just have to apply ourselves a bit better. We had some chances, but we were just a bit clumsy in the field," added Fleming.
"What we do have to do is apply ourselves better and make sure that whatever surface we're on, we're in the fight. I don't buy into what's talked about over there. We've got firepower all the way through.
"We just have to create the opportunities. Just because we don't swing from ball one and play with it, a lack of fear factor, we'll just sort of see what teams end up at the end," he added.
Mahendra Singh Dhoni striking three boundaries and two sixes to make 30 not out off 16 balls to go past Suresh Raina as CSK's highest run-scorer in IPL history, was only a minor consolation.
Fleming conceded the former skipper had an uphill task when he came in to bat.
"He's been here (training) well over a month, so he's done a lot of work with the trainers to get himself into shape. He's very professional in that way, and just natural ability. It was far too steep in the end."
