Question about the SA5B27 missile (SA-3)

[VTJS17_Fire]

Hi folkes,

I read, that the SA-3/S-125 missile has two stages and that's (or one of the differences) why it is more agile, than the S-75 (for example).

Are these two stages of the rocket motor simulated in DCS?

And if yes, does the second stage fire up, when the first one is used or if the missile reaches a minimum speed/acceleration?

 

Thanks in advance and kind regards

[Mike_Romeo]

35 minutes ago, VTJS17_Fire said:

Are these two stages of the rocket motor simulated in DCS?

Yes they are.

35 minutes ago, VTJS17_Fire said:

And if yes, does the second stage fire up, when the first one is used or if the missile reaches a minimum speed/acceleration?

Directly after seperation. Its not a ramjet engine and so it doesnt need a minimum speed to ignite.

Edited March 6, 2022 by Mike_Romeo

[VTJS17_Fire]

Thank you very much.

What I would ask was, if the second stage fires near to a minimum speed/acceleration to save agility against high maneuverable targets?

Example: You fly a high-g maneuver to reduce the missiles speed (and so energy) and to counter that, the missiles starts its second stage if it reaches a minimum Mach or g. Otherwise, you could wait just to the moment, the missile fires its second stage and then perform that maneuver and left the missile with so less energy to fail to hit. That my thoughts for some SEAD tactics.

[Dragon1-1]

SA-3 is a fairly old missile, it's not smart enough to do things like that. It's not much more advanced than the SA-2, actually. 

[Kang]

It's more of a basic rocketry thing. It has a high thrust booster stage to get off the launcher and going, separates rather quickly after and fires the second rocket that burns for much longer but with less thrust to keep going. Basically it sheds the weight of the first stage booster, in a similar manner space rockets would.