Indian Missile News And Discussion

[Arun_S]

In the above article pls specially note the following regarding the flight profile and propulsion:

The second stage air fins provide necessary in-flight trajectory control. The main motor is typically expended at 33 km altitude well within the atmosphere; however the air fins remain effective beyond post boost phase. The air fins also allow the missile to fly in a depressed trajectory as well as cruise and glide in sustained hypersonic regime at 50 km altitude. The payload separation can be done much later after exploiting aerodynamics for trajectory modification during ascent or descent. The missile is resistant to ABM defense[8].

I.e The RV separation can be done after exploiting kinetic energy of the second stage for the psudo-cruise (coast) phase.