These are purely clickbaits or fake news items. Do not post these without sources.
DRDO Tender - Buffet Response Analysis, Wind Tunnel Buffet Testing, Aeroelastic Optimization - Karnataka
I'd imagine after years on various defence sites including being an administrator here for some time one would be able to discern between genuine & spurious stuff which could or would in this case also extend to considering why would a channel put out fake stuff about something as dull as AMCA buffet response analysis & flutter testing.
Then again I've always given the unworthy & the undeserving the benefit of doubt.
Please resign your post & hand over charge to someone more deserving.
Why are you linking a random tender that too to a paywalled site?
The video title says "AMCA Phase-2 Begins", where is the reference to this? A Rs 30 lakh tender for some test does not mean its "AMCA phase 2"
If you have the tender document post it with details not a clickbait video with electronic voice-over. You are posting these on multiple unrelated threads, it will be considered as an infraction next.
Post to regular threads with the subject. Above is an example of clickbait videos based on nothing. There is no place for those.
But One 5 or 6 minute video contains Titbits of Information on various projects
So we need a Separate Thread for Youtube Videos
What's random tender in this ? The site says these are tender documents for wind tunnel buffet testing & aeroelastic optimizations. Paywall or not , that tender exists.
You want to prove Phase -2 hasn't commenced . Please provide evidence it hasn't.
Pls search for the tender documents on ADA website. I don't have the time or inclination to download a tender document on my phone , clog the memory & upload it here to prove a point . More than anything else I find it childish.
Finally , I've told you & nair to delete my profile since forever. Anytime you feel like it , go ahead & make my day .
I couldn't find any info on most stuff mentioned on the tilte. As i said based on nothing. Its not like they produce any original content.
No, we don't need a separate thread. It will just become spam as they produce every day. Interested users subscribe to them on youtube.
You are always welcome to log out and leave if you don't like how we run the forum.
As per Midhani annual report, Midhani has delivered test blocks of High Strength titanium alloy forging for high precision milling used to reduce the amount of structural work for the AMCA bulkhead similar to the F-35's monolithic titanium bulkhead.
For F-35's bulkhead see slide 7 of this presentation by Alcoa https://cdn.ymaws.com/titanium.org/resource/resmgr/2010_2014_papers/RoegnerEric_2010MilitaryAeri.pdf
Pic of F-35's bulkhead structures
For F-35's bulkhead see slide 7 of this presentation by Alcoa https://cdn.ymaws.com/titanium.org/resource/resmgr/2010_2014_papers/RoegnerEric_2010MilitaryAeri.pdf
I have my doubts (I'm neither a metallurgist nor Mech engineer) on wether this will make it into the final design as the challenges in ensuring QC/QA for this are immense and will depend on High Cycle Fatigue testing that will probably be carried out now. The fatigue testing is important to ensure durability for the whole lifecycle of the aircraft. F-35 bulkheads faced a lot of challenges during development regarding this as they very frequently observed fatigue cracks in HCF testing.
I also have doubts on how Midhani achieved this as F-35 related reports indicate that they needed large 35000 Ton force and 50000 Ton force forge presses to achieve (due to the thickness) this but AFAIK Midhani only has max up to 6000 Ton force. The largest forge presses in India are at Bharat Forge (15000 Ton) and L&THSSF (L&T-NPCIL JV) Hazira( 9000 Ton I think - planned 17000 Ton). Maybe they can make it work without going too high end like F-35 and making some compromises.
Some correction:
All the presses mentioned above including MIDHANI, L&SSHF, Bharat Forge are all hammer presses for Steel applications and cannot be used for stamping applications required for Metals like Aluminium, Titanium and Magnesium stamps commonly used in Aerospace.
For Aerospace, HAL has a 3000-tonne water hydraulic press with extrusion capability for Aerospace applications and this will probably be used to forge it at HAL after the die is received from Midhani.
HAL can probably accelerate this process by building a 50000 Ton or 60000 Ton press. There are very few of these in the world as their need is only for high precision aerospace components mainly large civil aircraft.
Few were built in the US as part of USAF's Heavy Press Program in the 1970's which are still used for all US applications including civil aircraft at Boeing
France has an USSR's (Ukranian) NKMZ built 75000 Ton press which is used by Airbus, Boeing etc. & other European companies. There's one in Ukraine and one in Russia (both 75000 Ton soviet era).
Japan and China each recently built theirs - circa 2013.
We haven't built one as there is no civilian aircraft manufacturing to make it viable but either HAL or MIDHANI or HINDALCO have to dip their hands in it now.
Based on American data, Each press of this size is expected to cost around USD 200 Million to USD 400 Million atleast which will have to come out of GoI capex. Won't be economically viable without govt funding as there is very little commercial need since we don't have a civil aircraft program. Even for Civil applications most of these forges were never economically viable to build and operate and were always govt funded. F-35 project had to pay USD 100 Million just to repair one of the presses at Alcoa.
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HAL uses this old soviet era 3000 Ton closed die forge press seen in this video at Timestamp 7:41 that was procured during the MiG-23 license building era
@gearedcombustor
www.aerospacemanufacturinganddesign.com
Aerospace forging press is India's largest
SQuAD Forging's 10,000 ton capacity press will forge large airplane components, structural parts.
www.aerospacemanufacturinganddesign.com
I zoomed the pic of AMCA model behind new ACM Chaudhari sir and found an EOTS-esque projection, posted it on DFI.
Not really true. CCS approval and serious money is yet to come in. Roll out in 2024 and first flight in 2025 which is on track if everything goes well.
Metal cutting of Mk2 is near (oif not already done recently). Roll out next year first flight in 2023. You can't reasonably expect AMCA production getting priority.