was hesitant to use dual pulse because i wasnt sure but i guess i remembered correctly
either way ill just assume the guy meant dual pulse, in case the derby has that. then again its not hard to just model it like a normal burn sustain missile until we do see such missiles
ill take your word for it then, im not exactly well versed in these things and the missile sheet i usually look at to consult stuff doesnt seem to say anything about dual stage.
Still, i find it extremely weird that pantsir is able to reach 18km max range / some 15km effective range without sustainer.
while the full missile is 170mm in diameter with a weight of 72.5kg before the burn, the “dart” is only 90mm and weighs only 28kg. it gets a lot of speed and then gets reduced to something that has very little drag and weighs next to nothing
(not counting alleged extended range variants)
then yeah we dont have that but there should be no issue in just modeling it as a normal missile. pretty sure thats what itll behave like on a close range shot anyways
If that will be the case, in quite sure it will simply be the same as normal Derby. I dont think the combined power of both pulses is much stronger than the standard motor of Derby. Or at least i dont know anything about it. If anything, it could be worse due to the fact some space that in the standard is filled propelant, will be occupied by the pulse valve mechanism.
The missile motor has a set size
If the propelant is the same (thats what i said in my case, i do not know it) the overall volume of the propelant will be smaller, as the pulse separation device has to be put between pulses
The I-Derby ER is marginally heavier than the I-Derby/Derby iirc, although that’s possibly just a side effect of having two stages, but who knows maybe it has slightly more thrust or just better propellants idk.
If I had to guess it probably had about the same amount of thrust as the other Derbys in total, meaning about the same performance at close ranges of it had to fire both stages one after another for close ranges. What I’m interested in is if the second stage is longer burning than the first, and if so by how much, as well as if it has variable thrust control for the second stage. Depending on how the second stage performs, it could be even better from close to medium ranges where the other Derbys might lose a lot of energy to drag and maneuvering, while the ER would retain said energy a lot better at the cost of being slightly slower initially.
What im saying, is that if the missile does not have 2 pulses modeled, it would be (in case propelant is the same) worse, as the propelant will be ignited instantly, not in pulses, so you get less thrust in total.
Normal missile
Lets say a single stage 10kN over 4s
Dual pulse
2 pulses, 2s and 4.8kN each.
That means if the missiels does not have the pulse mechanic implemented, it would be worse.
That can be solved via SPYDER-MR/LR systems then, which would be entirely separate vehicles and systems ofc, but it would provide the ranges you desire (60-80km ranges)
If you’re talking about the SPYDER AiO exclusively, the best it can get is the I-Derby ER as that’s the best missile it’s compatible with. It has the smaller launchers, it’s not capable of the larger booster capable ones.