Full Article of [1. High AoA Aerodynamics for Combat Aircraft : 1.3.1]
As I argue future air-warfare of 2030 age in [1. High AoA Aerodynamics for Combat Aircraft : 1.3.1], age of the successor of 5th generation fighters, I had proposed hypersonic MIRV Air to Air missile to overcome the layered defense line of 6-5th generation fighters.
Although, numerous past and recent studies of hypersonic vehicles extended our understanding of hypersonic and propulsion device, scramjet engine, a lot of inherited difficulties related to hypersonic MIRV Air to Air missiles. I shortlisted possible technical difficulties for the realization of the concepts.
1. Flight of Heat Shield and MIRV Warhead Parts
Heat shield provides protection and drag reduction effect for MIRVs before they enter the terminal phase of guidance. However, it is easy to expect that precise flight control between separated head shield and MIRV warheads. it requires high level of understanding of aerodynamic characteristics of hypersonic, specifically, interference between the numbers of object in one big shock, naturally inducing complex structure of shocks.
2. Sensor Technology for Hypersonic MIRV
In the hot flow of hypersonic condition, embedding sensor on the nose of the missile could be challenge task for missile designers. This problem is already serious for hypersonic ammunition which are currently developing; this could be severe for smaller and faster air to air missile requiring more precise guidance information.
3. Precise Guide & Control of Hypersonic MIRV against 6th Generation Fighters
As described in #2, sensor technology is huge burden for the hypersonic ammunitions. not only acquiring information from sensors, but also guidance and control of the hypersonic object for the maneuverable jet fighter is very challenge task. Similar problem was emerged when hit-to-kill style interceptor for ICBM. Now target jet fighter is much slower but it could show much unpredictable avoid maneuver than ICBMs.
4. Miniaturization of MIRV Warhead containing SCRAMJET, Sensor, and Fuel
Similar hit-to-kill intercept missile for ICBM is very huge ordnance than hypersonic MIRV missiles, so things described above should be contained in much smaller volume of the warhead parts. Adopting of scramjet for maintaining kinetic energy in horizontal flight could reduce weight of oxidizer compare to rockets however it requires delicate design of air-breathing part.
5. Material Problem for Producing Cheap MIRV Warheads
All of this should could be done high temperature, pressure (compare to exo-atmospheric interceptor) condition; development of light-weight material capable of operating in that condition is required.
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