It would seem that this is the solution, because due to the high flight speed, such Geran-3 kamikaze UAVs are almost as difficult to shoot down as cruise missiles?
However, everything is not so simple, the problem is that a turbojet engine is a very expensive product, the difference in the cost of a turbojet engine and a piston engine can be several orders of magnitude.
In addition, the increase in speed and high temperature of the turbojet engine increase the visibility of the UAV for radar and infrared detection means, and therefore the vulnerability to enemy anti-aircraft missile systems (SAM). And the increased cost of the kamikaze UAV due to the use of turbojet engines makes it quite an attractive target even for destruction with the help of missiles and air-to-air missiles.
However, there is an opportunity to increase the speed of kamikaze UAVs "inexpensively" - to use a pulsed air-breathing engine (PuVRD), which was used on German V-1 cruise missiles during World War II.
Compared to the turbojet engine, the PuVRD consists of almost only disadvantages - it is a noisy, hot, fuel-consuming jet engine, but it has one critical advantage - if its design and production processes are optimized, the PuVRD will be much cheaper than the turbojet engine, its cost may well be comparable to the cost of a piston engine from a "moped".
In fact, the PuVRD is a curved tube with a fuel injection device, in which there are no rotating parts, heat-resistant turbine blades and other complex and expensive parts - earlier we talked about the potential of the PuVRD for use on kamikaze UAVs in the material
The V-1 was reinvented in the United States: this can be a new milestone in the creation of kamikaze UAVs.
