Posted By: Snailman
Re: S-75M3 Volhov (SA-2E Guideline) - 03/02/16 09:13 AM
Hello!!
I'm new to this forum.. I'm not sure this is the topic to ask such questions. I am developing add-ons to another simulator and I found myself in a dead end street with several aspects of the SAM systems.
I would be grateful if someone could give me answer to these problems I encountered. Mostly difficulties caused the lack of data and to some point the outdated software code limitations which we cannot change, though.
1. Missile lifetime. I could not find any data on SA-2 missile family, not even in original russian manuals. In SAM Simulator I measured 45-50sec for Dvina and 60-65 sec for Volkhov. This is the time they reached max range and disappeared. Field manual says that the self-destructor activates at 81 +-5sec. But at the same time it also writes the autopilot deactivates when the rocket engine shuts down. So, for how much time the missile is active then?
2. Connected to the previous problem, I don't know for how long the sustainer is active. Some sources say, 3 sec for booster + 20-22s for sustainer. But that's just 25 sec, and then how the missile stays active...? If it's about the non-passive capable variants. The original manual says, 3-4.5sec booster time + two types of engine program, one of which is 24 sec at full power (3500) for gaining altitude, then it switches to thrust 2000 for the rest of the flight. But still not mentioned for how long... 4 + 24 + ???
3. Booster separation parts. I could not find reliable drawings or description on how the booster separates from the second stage. There is a gap between the booster and the second stage. Most sources including SAM Sim manual shows that the booster stage starts from there. But some photos show the last section of the second stage (that conical part) also separates with the booster! On missile assembly videos the booster does not contain that part, the crew attaches the booster with it's four legs onto the end of the missile (to that particular conical section)... I will post pictures later, I think I was unclear here... I'm at work now(
Thanks for the help to all of you.
edit: Some nice pics for you, in return)
I'm new to this forum.. I'm not sure this is the topic to ask such questions. I am developing add-ons to another simulator and I found myself in a dead end street with several aspects of the SAM systems.
I would be grateful if someone could give me answer to these problems I encountered. Mostly difficulties caused the lack of data and to some point the outdated software code limitations which we cannot change, though.
1. Missile lifetime. I could not find any data on SA-2 missile family, not even in original russian manuals. In SAM Simulator I measured 45-50sec for Dvina and 60-65 sec for Volkhov. This is the time they reached max range and disappeared. Field manual says that the self-destructor activates at 81 +-5sec. But at the same time it also writes the autopilot deactivates when the rocket engine shuts down. So, for how much time the missile is active then?
2. Connected to the previous problem, I don't know for how long the sustainer is active. Some sources say, 3 sec for booster + 20-22s for sustainer. But that's just 25 sec, and then how the missile stays active...? If it's about the non-passive capable variants. The original manual says, 3-4.5sec booster time + two types of engine program, one of which is 24 sec at full power (3500) for gaining altitude, then it switches to thrust 2000 for the rest of the flight. But still not mentioned for how long... 4 + 24 + ???
3. Booster separation parts. I could not find reliable drawings or description on how the booster separates from the second stage. There is a gap between the booster and the second stage. Most sources including SAM Sim manual shows that the booster stage starts from there. But some photos show the last section of the second stage (that conical part) also separates with the booster! On missile assembly videos the booster does not contain that part, the crew attaches the booster with it's four legs onto the end of the missile (to that particular conical section)... I will post pictures later, I think I was unclear here... I'm at work now(
Thanks for the help to all of you.
edit: Some nice pics for you, in return)