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The BrahMos is actually a bit of a dud. The supersonic speed causes so much friction heat along its surface that it lights up on IR sensors like a beacon.
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As per one of the comments posted by one Indian on the live fist blog.
Excellent scoop!
The missile appears to be a huge fuel tank propelled by two ramjet engines.
The design approach is evolutionary, almost crude, with DRDO apparently relying on the technology that it has acquired from Russia under the Brahmos co-production deal.
It is likely the engine for the LRCM will be a derivative of the ramje6t engine that powers the Brahmos.
The use of twin engines reduces SFC, which is already grim in a ramjet engine. The missile will be mostly gas, pun not intended.
DRDO obviously does not have the confidence, or the proven expertise, to design a large enough ramjet, or a jet, suitable for a long range supersonic missile from scratch, hence the huge compromise.
The use of two engines rules out the proven circular centerline air intake of the brahmos, which is why the DRDO schematic makes a big deal out of developing "Air Frame Integrated Air Intakes."
DRDO has no proven expertise in air intakes for a mach 3.2 class airframe to fall back upon. Its starting point could well be a close study of the MiG-25 air intakes. The aircraft has been phased out from IAF but they are lying around in parks.
There are downsides to the evolutionary approach that DRDO is adopting.
The Brahmos has a much larger cross sectional area than contemporary cruise missiles (660mm against 520mm for the tomahawk). Consequently, it has a much larger radar signature.
While Brahmos' supersonic speed reduces the time available to the target defenses, especially the human element within them, its greater radar signature mitigates the threat by allowing for earlier detection that a Tomahawk type missile.
With its considerably larger size, the LRCM is going to be picked up even earlier than a Brahmos. It is moot if its size will be large enough to completely negate the advantage of its supersonic speed.
As you are aware that most of the ground radars use RF rather than IR, again Brahmos uses the speed as an advantage because what option enemy has to knock it off?
The BrahMos is actually a bit of a dud. The supersonic speed causes so much friction heat along its surface that it lights up on IR sensors like a beacon.
The BrahMos is actually a bit of a dud. The supersonic speed causes so much friction heat along its surface that it lights up on IR sensors like a beacon.


Terminal guidance can be IR. All the interceptor has to do is get in its way.
And supersonic speed => large momentum => less agility (basic physics).

Terminal guidance can be IR. All the interceptor has to do is get in its way.
And supersonic speed => large momentum => less agility (basic physics).
The BrahMos is actually a bit of a dud. The supersonic speed causes so much friction heat along its surface that it lights up on IR sensors like a beacon.

Sigh. We've been through this before...
- BrahMos gets launched. Let's say the enemy detects it and figures out the general area where it's headed. Remember, the IR signature is generated from body friction so it's going out in all directions. And the BrahMos cannot fly as low as a subsonic missile.
- Interceptors are launched from the estimated target location. They don't need to catch up to BrahMos because it is coming at them.
- When the BrahMos comes within range of the interceptor's IR sensor, all it has to do is to manoeuver itself in the BrahMos' flight path. The interceptor is passive so the BrahMos doesn't know it is being tracked and, in any case, it can only do so much manoeuvering due to it's large forward momentum.
if the sam misses a meter brahmos will escape..
Wat about this..