Currently, the claimed certifiable MTBO of Al-55i is around 150hr. Russians are claiming they can increase it up to 300hr-500 hr in time. IAF wants it to be 900hr.
Flameout: Why the IAF won't accept HAL’s jet trainerThe new engine too hasn't received certification. “The Russian engine needs to be overhauled more frequently than suits the Air Force,” an IAF official told Defense News. The engine would need to be overhauled about every 150 hours of flying, while the air force wants the engine to operate at least 900 hours before an overhaul is needed.
A Russian diplomat, however, says the engine meets the basic requirements of the IJT, adding that the service life of the engine is being increased to 500 hours.
While 500 is a big improvement over 150, itis still not enough. Jet trainers conduct several sorties a day. If the IJT does, say, 10 sorties lasting an hour each daily, it would result in engines being overhauled every 50 days. That is going to severely limit aircraft availability, and the IAF finds that unacceptable.
HJT-36 Flight Test Resumption Renews Hope for AL-55 EngineRussia insists that the 2005 contact was fulfilled in 2013, when AL-55I pre-production specimens demonstrated a 300-hour lifetime. Further plans called for the extension to 600, and then to over 1,200 hours, the latter being an Indian Air Force requirement. According to developers, the engine’s cold section is designed to withstand 6,400 hours and the hot section 4,000 hours. So far, however, Russia has delivered only about 20 engines, due to the HJT-36 production program being halted by the spin issue.
I guess @Milspec pointed out how a former ACM went out of his way to favour the Russian jet engines for this particular project over HAL's choice Guess it's still not late in the day given that the IJT project is both stalled & delayed. They can opt for another engine & redesign the IJT around it. Sub optimal as the solution is, that's the way out ecosystem operates.Currently, the claimed certifiable MTBO of Al-55i is around 150hr. Russians are claiming they can increase it up to 300hr-500 hr in time. IAF wants it to be 900hr.
Flameout: Why the IAF won't accept HAL’s jet trainer
HJT-36 Flight Test Resumption Renews Hope for AL-55 Engine
Its amusing that after all these years of lurking how you are still surprised by utterly incomprehensible norms of Indian defense procurement.
Several major issues will be placed before the DAC, likely on March 18 and perhaps, the last such meeting in this financial year. These include: two simulators for the Hawk advanced jet trainer (AJT) for the air force. These are valued at approximately Rs 300 crore each.
Hopefully IAF now transforms its regime from BTT >> IJT >> AJT to BTT >> AJT>> SPORT
These types are useful only in uncontested airspace and in absence of ground based air defence. Like against drug cartels in South America, militia in African nations, etc.
Well, in the event you ought to have a word with @Falcon . He was keen on IA possessing a squadron or 2 of Hawks as part of CAS to be undertaken as per the CSD. Wonder what are your thoughts on this.These types are useful only in uncontested airspace and in absence of ground based air defence. Like against drug cartels in South America, militia in African nations, etc.
A single MANPAD even from 80s and that's 7 million USD wasted.
Well we need to recognize our size and our needs. I certainly do not know all and will like to learn more.
Think both are different category aircraft s .