[quote=“CorporalApollo, post:805, topic:155665”]
No it’s not. They if we’re referring to Gszabi’s missile spreadsheet, deltaV is just calculated with the start mass, endmass, burn time and thrust. Which gives the missiles deltaV value. As soon as the motor burns out, only the mass, loft and drag (based on CxK value, calibre of the missile, wingareamult etc) matters, not deltaV.
I should re-word this, such is already taken into account uniformly across the missiles, they all preform as if they are the same missile in regards to deltaV.
The R-77 and 120A are actually quite evenly matched, the MICA-ER pulls slightly ahead in most situations, the PL-12 and Derby are screwed by their loft as stated(which has been toned down a bit as of late for the PL-12, but the derby and darter still have that crazy 27.5 degree loft) , they can still hit targets at a similar range, but instead come down nearly vertically like a rock and take vastly longer to cover the same distance.
Still funny to me that the R-27ER and 7F/M still make impacts out to similar ranges without any loft, usually with the 27ER reaching the target at the same time as the MICA and the 7F/M just keeps cruising along with that sustainer, with the likes of the Fakour and Sedjil being the ones who outspeed everything.
Anywho, radar missiles flight performance is a bit off topic here as the original statement is between the 9M and R-73, which, once again, are quite similar bar the TVS of the R-73 in terms of kinematics.
Someone has not played on overcast Afghanistan before.
Its this amazing thing known as math that the radar itself does to determine the rate of closure or lack thereof without doppler shift. You take the distance of the target during one sweep, then take the distance of the target in the next sweep, then find out how long that sweep took and the distance changed in relation to target direction, you now have a velocity. Such is required for radars to generate tracks. Search scopes do not display this information nor do many older scopes in general as such information was displayed on other indicators, usually on the RIO panel for a selected target, sometimes even target acceleration would be shown. Such limitations are also something that crops up with a number of HUDs in game too, with HUDs like the phantoms simply plopping the gunsight on the target when acquired, while say the jeff puts a nice, separate target box over the locked target, or in the case of the JHMCS (which the F-15C and 16C have but not implemented properly) should show RWR and radar tracks on the HMD much akin to the A-10C’s friendly IFF circles.
Modern scopes will show this information and in many cases the direction of flight of the target in the search scope as RIOs are no longer common in aircraft.
TLDR: You are flying an older aircraft without modern radar scope luxuries, the radar still understands the velocity of the stuff it’s scanning without being a PD radar, it cannot show you this data because the scope you are using was not designed to show it.
