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patriots

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Bdw today aon for helina comes
Yesterday there was a report on some problems with helina

That's how hit job works , they have sources in mod
Bdw now drdo , bdl can start production for helina

As hal produced lch , after getting aon... Before the actual lsp order
 

ObiWanKenobi

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Thank you for showing that - very interesting!

Unfortunately none of those are critical hot section turbine stage parts (as implied in the idrw article sourced from some 'API'). Those would be turbine rotor/stator blades - not compressor stage rotor/stator blades such as the ones mentioned. Compressor blades are usually titanium alloys. Turbine hot section blades are Nickel alloys. This brochure is for their titanium alloy products.

Helpfully, even Tmax is shown - that would be at the very least 1500C or 1773K for modern hot section blades. If they mean material temperature - that too would still be around the 1200C mark after accounting for cooling systems, internal aerodynamics & turbulent flow effects.

Futuristic hot parts won't be Nickel, or even metallic. They will be CMC (Ceramic Matrix Composites) - giving us another 200 odd degrees in the quest for ever higher turbine entry temps. Indian companies will have to focus on these if they want to be contemporary 10-20 years from now. Its an opportunity for us as the tech is completely unrelated to metallurgy and everybody is starting from scratch.

EDIT: By no means want to take away from the value of the titanium parts developed for other engine sections. Not many countries/companies even building that stuff on their own.
 

Corvus Splendens

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Thank you for showing that - very interesting!

Futuristic hot parts won't be Nickel, or even metallic. They will be CMC (Ceramic Matrix Composites) - giving us another 200 odd degrees in the quest for ever higher turbine entry temps. Indian companies will have to focus on these if they want to be contemporary 10-20 years from now. Its an opportunity for us as the tech is completely unrelated to metallurgy and everybody is starting from scratch.
Domestic efforts are still concentrated on perfecting nickel based super alloys.
 

Rajaraja Chola

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How come the VSHORAD one is progressing so fast? AFAIK the missile was first tested only a few months back.
Lol man. This AoN can expire in 24 months. RFI is released in that phase. RFP takes another 2 years. CCS clearance takes 1 year. So Vshorad actually can even take 2-3 years development time. Remember Mk1A AoN to CCS clearance took 3-4 years. LUH still waiting. Same goes for future orders for LCH.
AoN is just an process in defence acquisition. It’s not even exciting anymore to AoN.
 

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