The new AAMs also burn fuel very quickly and fly a large part of the flight without propulsion.
Would those happen to be the ones with the fins and control surfaces on the outside so they can manouver to hit their target?
Short range missiles generally have two types of fuel too... as I described simply because losing less speed to drag means it travels faster for longer... greatly increasing flight range over having all high energy fuel that gets it to a slightly higher peak speed but then slowing down much faster on the way to the target.
Only AAM Meteorite has a ramjet engine that works longer.
It is only a ramjet so its speed is limited to similar to most contemporary small rockets... ie mach 4-6.
A Scramjet powered missile can move at twice that speed or faster... but both types of engine allow intelligent throttling which rocket fuel can't.
A solid rocket fuel missile launched at low altitude will burn up its high energy fuel trying to climb and accelerate so it wont get to the height or speed the same missile would get if launched at high altitude so the range will be much shorter.
Launched at lower altitude its top speed will be much lower because drag will be higher so that high energy fuel will be wasted at low to medium altitude.
A ramjet or scramjet powered missile could use a relatively low throttle setting when launched at low altitude to climb and as it climbs it will be able to go faster and faster to the throttle will increase as it climbs so it wont waste fuel at low altitude... once it gets to altitude it can accelerate to speed and then throttle back to just overcome drag... greatly extending range and speed over a solid fuelled rocket.
Note it was mentioned that the newest short range IIR missile the Russians have has three rocket fuels, with a high power and then a low power, but also another high power fuel which is separate from the first two. On launch the first high power fuel accelerates the missile up to speed and to climb a little depending on the target and its distance. That fuel burns out fairly quickly but once it burns out the lower energy fuel burns to maintain speed and counter drag. When the missile gets close to the target... even if the low energy fuel is still burning the other fuel lights up giving much more energy to the thrust vectoring engine to allow extreme turns and manouver performance to the missile... even if the target is 30km away... it will burn the first and second fuels and then coast to the target... when it gets close it fires up the high energy terminal attack fuel... very clever... obvious... but clever.
Therefore, Zircon is a better option than Kindzal and scramjet can replace some rocket engines. The scramjet engine can run much longer. This is a breakthrough, not Iskander fired from an airplane.
Yeah, you are missing the apples for the trees buddy.
A scramjet motor is much more efficient and clever, but a rocket powered Kinzhal does the job and because it was based on an existing weapon it is practically already in production and is now in service.
It is a bit like the Army needing an artillery rocket that can be fired from the back of a small vehicle... using an 80mm rocket pod developed for aircraft... already in service and production... you just need to modify the launcher and it is ready to go.
Meteor has a 150km range, k-77m has a 193km range also there is the k-77me that features a ramjet design.
R-37M has hit targets in tests at a flight range of 300km.
Russia and the Soviet Union have lots of ramjet powered missiles... from the SA-6, and Kh-31 family, through quite a few of their low flying supersonic anti ship missiles like Granit and Vulkan and Moskit.