US May Offer THAAD System to India to Block Russian S-400 Deal

Prithvi missile has altitude of much more than 25-30km. The missile is shot almost straight up and then made an almost U turn to replicate incoming MRBM at 3km/s. So, India can make the missile fly straight to 60km altitude, then make a U-turn with still fuel left and accelerating downwards to reach about 8Mach at 30km altitude. Prithvi 2 is liquid fueled has ballistic range of 350km and is capable of maneuvering which helps in controlling thrust as and when needed to be modified to replicate MRBM reentry pattern.


Indian systems are not useless. PAC-3 has been developed since 1980s but it was only in 1990s that it became more mature. Development algorithm, programing language, computation etc have drastically changed and hence time does not work linearly in BMD or SAM development. It was with the advent of super-computing in 1985-1990 and fast computers that the BMD got a boost. So, India is not too far behind. Indian system is also capable of intercepting missiles as per Indian needs - mainly MRBM.


Indians don't use toilet paper. Indians use water. Toilet papers are disgusting. Cost has nothing to do with purchases. India purchases to get new technology to learn from, not for usage. The technology obtained will be used to make indigenous items. Rafales, S400 etc involve some high technology which are needed for India. These system themselves are not of great use but the technology available in them are.
It can replicate the altitude but not the speed or trajectory.

Where are Russian hit-to-kill interceptors?

So copying.
 
It can replicate the altitude but not the speed or trajectory.

Where are Russian hit-to-kill interceptors?

So copying.
I am speaking of Indian AAD interceptor, not Russian ones. By reducing the range from 350km to 50-100km and increasing speed of descent.
 
I am speaking of Indian AAD interceptor, not Russian ones. By reducing the range from 350km to 50-100km and increasing speed of descent.
That increases height but it does not increase speed.
 
That increases height but it does not increase speed.
The Prithvi missiles are NOT traveling in ballistic path. In ballistic path, the motors are not working in the descent path But in Prithvi, even during descent, the rocket is still in ignition. So, the total flight time is reduced and hence air drag is also reduced which increases speed drastically
 
The Prithvi missiles are NOT traveling in ballistic path. In ballistic path, the motors are not working in the descent path But in Prithvi, even during descent, the rocket is still in ignition. So, the total flight time is reduced and hence air drag is also reduced which increases speed drastically
Nope. The motor only works during boost. This conversation is getting increasingly ridiculous.
 
Nope. The motor only works during boost. This conversation is getting increasingly ridiculous.
Prithvi missile is a liquid fuel maneuverable missile. It can be maneuvered to work in descent. Prithvi is not traditional ballistic missile. It is combination of cruise and ballistic missile. Just like cruise missiles can fire motor in descent, so can prithvi.


The Prithvi missile is used to simulate other missiles exactly due to this reason. The liquid fuel comes very handy in maneuvering
 
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Prithvi missile is a liquid fuel maneuverable missile. It can be maneuvered to work in descent. Prithvi is not traditional ballistic missile. It is combination of cruise and ballistic missile. Just like cruise missiles can fire motor in descent, so can prithvi.


The Prithvi missile is used to simulate other missiles exactly due to this reason. The liquid fuel comes very handy in maneuvering

Nothing correct there.
 
Prithvi missile is a liquid fuel maneuverable missile. It can be maneuvered to work in descent. Prithvi is not traditional ballistic missile. It is combination of cruise and ballistic missile. Just like cruise missiles can fire motor in descent, so can prithvi.


The Prithvi missile is used to simulate other missiles exactly due to this reason. The liquid fuel comes very handy in maneuvering
That doesn't give you MRBM speeds and it would need all its fuel to reach 130km altitude. What you're showing there is a boost-glide trajectory.
 
That doesn't give you MRBM speeds and it would need all its fuel to reach 130km altitude. What you're showing there is a boost-glide trajectory.
It is powered glide and also has upward motion in the trajectory I have shown. The interceptor of AAD intercepts at 30km or less. So, as long as the Prithvi missile has the speed of MRBM at 30km, it is considered to be simulating a MRBM. Prithvi may fly only till 85km and then do a powered descent.

Something like the picture below with full powered flight to simulate MRBM from the 60km altitude point by which time the warhead would have obtained speeds of 8-9Mach. The radar will detect it at 60km, calculate trajectory and fire the AAD interceptor after here to intercept it at about 20km altitude. By the time it is intercepted at 20km, the speed would be about 5 Mach, which is the typical speed of 2000km Pakistani MRBM at this altitude due to air drag.

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There is no way of simulating another missile with Prithvi if downward flight was not powered. Downward powered flight is mandatory to simulate another missile as by doing so the right speed can be maintained of the simulated missile
 
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It is powered glide and also has upward motion in the trajectory I have shown. The interceptor of AAD intercepts at 30km or less. So, as long as the Prithvi missile has the speed of MRBM at 30km, it is considered to be simulating a MRBM. Prithvi may fly only till 85km and then do a powered descent.

Something like the picture below with full powered flight to simulate MRBM from the 60km altitude point by which time the warhead would have obtained speeds of 8-9Mach. The radar will detect it at 60km, calculate trajectory and fire the AAD interceptor after here to intercept it at about 20km altitude. By the time it is intercepted at 20km, the speed would be about 5 Mach, which is the typical speed of 2000km Pakistani MRBM at this altitude due to air drag.

View attachment 3123

There is no way of simulating another missile with Prithvi if downward flight was not powered. Downward powered flight is mandatory to simulate another missile as by doing so the right speed can be maintained of the simulated missile
The link gave an intercept altitude of 130km, the missile wouldn't be still powered after reaching that altitude.

Mach 5 is not the speed of a 2000km ballistic missile. More like Mach 10.
 
The link gave an intercept altitude of 130km, the missile wouldn't be still powered after reaching that altitude.

Mach 5 is not the speed of a 2000km ballistic missile. More like Mach 10.
130km intercept is not possible by Indian BMD till date. India has two BMD - AAD and PDV for upto 30km and 80km altitude respectively. Only AAD has been fully successful so far and PDV is not yet as successful as desired.

The maximum speed of MRBM is about 4km/s and that happens before reentry to atmosphere in stratosphere. Once the RV enters the 80km altitude they start decelerating due to air drag overwhelming the gravity. So, by 15-20km, the velocity comes to 5Mach and impact velocity is at about 2Mach for 2000km IRBM.
 
130km intercept is not possible by Indian BMD till date. India has two BMD - AAD and PDV for upto 30km and 80km altitude respectively. Only AAD has been fully successful so far and PDV is not yet as successful as desired.

The maximum speed of MRBM is about 4km/s and that happens before reentry to atmosphere in stratosphere. Once the RV enters the 80km altitude they start decelerating due to air drag overwhelming the gravity. So, by 15-20km, the velocity comes to 5Mach and impact velocity is at about 2Mach for 2000km IRBM.
Here is the link. States 30km outside atmosphere.
India’s Advanced Air Defense Interceptor Destroys Incoming Ballistic Missile in Test

Nah, it doesn't slow down that much. Mach 5 is typical for 300-400km SRBM.
 
Here is the link. States 30km outside atmosphere.
India’s Advanced Air Defense Interceptor Destroys Incoming Ballistic Missile in Test

Nah, it doesn't slow down that much. Mach 5 is typical for 300-400km SRBM.

The maximum speed of 2000km MRBM is about 4km/s at 80km altitude. After this, it slows down as it enters mesosphere and at about 60km it enters stratosphere whereby it starts slowing faster. By 20km it enters troposhpere and there its velocity declines rapidly.

The intercept was "within" 30km, not at 30km. However, 30km is the maximum altitude. I may be wrong about Mach 5 of MRBM at 20km, but it definitely is not more than 6-7Mach at 20km.