The point of a repeat order is the IN is happy with the Vikrant's base design. Structural changes are always possible, but changing the basic design is impossible without a lot of time waste involved. So it's unlikely to see an EMALS upgrade.
STOBAR is a major deficiency though. If not EMALS, then a Steam catapult. At least a study to find out the viability & feasibility (and cost) of such an upgrade is warranted.
One of the primary reasons why we went with STOBAR on the Vikrant was the fact that only STOBAR aircraft (MiGs & Sukhois) were available - CAT planes were either unavailable due to geopolitical reasons or just too expensive - along with the fact that we planned for Vikramaditya & Vikrant to have a common aviation complex.
This is no longer the case today.
Yes, this will introduce a delay - but we aren't going to have a sustained 3-carrier fleet anyway. At most we'll have a 5 year period in the late 2030s where we'll have 3 carriers, and then Vikramaditya will retire by 2040 anyway, so we're back to just 2 carriers till whenever IAC-2 comes.
I'd actually say it's better to go after IAC-2 instead. IEP is possible though.
The IN needs a clear cut long term plan to bring in nuke propulsion on larger carriers.
That would've been ideal but its evident IN thought they won't be able to acquire the IAC-2 anytime soon. For either technological limitations with the reactor they wanted (possibly CLWR-B2) not being mature enough to go ahead with the design, or cost reasons...perhaps both.
It's the whole reason a repeat order of Vikrant is even being considered - this wasn't part of the plan before.
The Americans can make the same offer for the engine.
GE Power Conversion and BHEL have signed a MoU to develop integrated full electric propulsion system for Indian Navy.
www.navaltoday.com
This JV is actually meant for an Indianized MT30 IEP optimized for warm-water operations. GE Power Conversion is the vendor that made IEPs for all MT30s in the world today.
They are now in the process for developing an IEP solution for LM2500 series, meant to go on Constellation-class FFG. But this is yet unproven - and likely to have tech hiccups for a long time as each new IEP solution has to be tailor-made for the specific power delivery pattern of a turbine, and the specific needs of each ship-class.
MT30 IEP is comparatively far more mature.
MRCBF will be chosen long before Vikrant II comes into play. We could even be operating the jet by the time the construction order goes through. The IN is aiming for a 2025+ date for a new carrier. Until then, funds are tied up elsewhere. Especially with submarines, fighters, drones and minesweepers being higher on the priority list.
Construction will happen long after MRCBF is decided, but the design has to be in place much earlier. In fact the work on design has already started: