Than very powerful booster is required. I do not think that it is a smart design. You unnecessarily increased the drag. That design may be very good for scramjet powered hypersonic missile but may not be very good for HGV. My 2 cent.
Indian Hypersonic Propulsion Developments
- Thread starter Ashwin
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Than very powerful booster is required. I do not think that it is a smart design. You unnecessarily increased the drag. That design may be very good for scramjet powered hypersonic missile but may not be very good for HGV. My 2 cent.
I Don't even consider it an hgv, the design imo doesn't have enough L/D ratio to be considered an hgv, or a gliding body, it looks more similar to an AAM missile, or US SM-6 missile, looks like an enlarged SM-6 missile .
And while it does have a booster that takes it to much higher altitude for it to then dive down till it's cruising altitude, it doesn't leave the atmosphere unlike hgv boosters, and doesn't seems to be using altitude as it's primary means of gaining speed and range, more like altitude is a "supplementary" element rather than primary/main element unlike HGVs.
It's a unique system/missile.
Its a missile that can do mach 8+ sustained cruise at lower altitude(30-50km) with the help of its rocket motor and still remains hypersonic( mach 6+) even in terminal, with this alone, it's more difficult to intercept compared to even what we currently know about scramjet powered hypersonic cruise missiles that are in development.
And while if drdo had used a hgvbody/more lift generating body for second stage, more range could have been gained, but sacrifice in control and maneuverability will be needed to be made, in its current design, the second stage/KKV of LRASHM has relatively very high controllablity and maneuverability compared to HGVs, conical RVs, and even scramjet cruise missiles( air breathing engines need stable air flow so high angle maneuvers are not good for that), which is good when you wanna hit moving targets like ships, and make interception more difficult.
In LRASHM, Drdo sacrificed, range & lift, for controllablity, maneuverability, lower flight profile, and difficulty of interception, mainly because I think 1500+km range was deemed sufficient, and lrashm in its current form does provide this range.
The HGV designs you all simp for, ie with bigger lift to drag ratio based flattish models , those are freely maneuverable only in the upper atmosphere or in space. If you try the same within lower altitude bracket you will need stabilizer fins to make maneuvering easy in all direction and retain excellent control and guidance with minimal course correction even if maneuver can happen in any axis of roll pitch & yaw simultaneously. In comparison a flatfish design like the one shown in Paris expo, it would keep velocity & skip glide ability but sacrifice range if tried to maneuver sideways at lower altitude then try course correction again. This is the reason it will fly longer outside atmos then smaller glide trajectory phase 1000km+ (overall range can be much larger of course but can be tracked much longer than LRAShM's HGV-KV)
Hence the top part hey call it HGV-KV, its a hybrid. Range wise it is more than ok.
Hence the top part hey call it HGV-KV, its a hybrid. Range wise it is more than ok.
Kamat sir mentioned LRASHM to operate at close to 8-9 mach , more warhead than Brahmos (obviously)
1,500 km for conventional hypersonic weapons is enough. For sea denial, it means PLAN ships cannot approach within 1,500 km of the Indian homeland or even Andaman. Essentially, the entire upper reach of the Indian Ocean and entirety of Malacca straits becomes off limits to PLAN if we want. LRHAM fired from Andaman can engage PLAN ships in the Malacca straits, so essentially we can engage them before they even enter IOR.
Govt should make a decisive decision and quickly establish Integrated Rocket Force by 2030. We cannot be lethargic or complacent anymore!!! IRF with LRHASM, BM04, Pralay, Brahmos is a must. We need also a special 2,500 km conventional missile, either hypersonic glide or quasi ballistic vehicle. With such a weapon, we can strike Hainan island (Chinese nuclear submarine base) and southern Chinese cities with conventional missiles from Andaman island. After all, southern China is China's most industrialized region, hitting their industries will slow their war effort and will present a psychological blow to Chinese civilians.
True. Design is basically the tradeoff between various parameters. It is a matter of Choice. What you need to achieve at the cost of what.
Dude, consider Andaman and Nicobar as well and count 1500 k.m. from there. Hamari Gunda Gardi chalegi Indian ocean main. Imagine HGVs and 2000 k.m. Scramjet powered hypersonic cruise missile deployed on Andaman and Nicobar and on Indian coasts. Bloody Chinese navy shall be kept at a bay. The only Bhai of Indian ocean is India.
So this is how DRDO's active Cooled Scramjet engine works:
Scramjet engine reaches high temperature while reaching hypersonic speed, to reduce the temperature ,a network of small cooling pipe are built around the engine.
-Fuel acts as coolant here, fuel is passed through the pipe to actively cool it,at the same time due to high temperature fuel chemical properties might change, so accordingly fuel is being made.
-An electrical pump is used to pressurize the fuel and passed through various pipe, which is powered by a battery made by a pvt company.
-current duration of flight:
*15 min+ in subsonic regime
*15 minutes in supersonic regime
*10 minutes in hypersonic regime (Pls note, things might change as project progresses)
-As you see here as things or dependent on each (material wise), This project is carried out in multi-disciplinary design optimization (MDO) mode, for faster, reliable way of project execution.
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The naval spinoff , it likely means hypersonic or high speed air breathing vehicle. Hopefully the desi Zircon.
There are big doubts about zircon being airbreathing, and from what I know it's not, it's similar to shaurya.
There's a lot of ambiguity about zircon, there's isn't a clear photo of zircon on public domain, despite the first test happened in 2020, earlier there were reports brahmos would incorporate zircon tech for Brahmos2, now Brahmos2 gonna use tech form LD-HCM,
ED LRHCM is a TD , HCM would be based on it
These are drawing, not actual pic.
These are actual pics
Post in thread 'Indian Hypersonic Propulsion Developments' Indian Hypersonic Propulsion Developments
Is Brahmos 2 gonna be Thier own engine, or it will be the DRDO engine/ zircon?