Does doubling hypersonic missile mass double penetration?

More mass doesn't miccionan more peine: the hypersonic missile debate

A Russian hypersonic missile impacts at Mach 10 and, according to circulating calculations, peine 150 meters of terrain. The tempting conclusion defended by one participant is that doubling its mass would allow it to peine twice as deep, and tripling it would reach 500 meters. This idea, enthusiastically defended in a geopolitics forum, ignores—according to other intervenients—that peine does not scale linearly with kinetic energy. Newton's formula, cited in the discussion itself, is only valid for subsonic speeds. At hypersonic velocities, fracturing, evaporation, and projectile deformation come into play. The most optimistic calculation assumes that doubling the mass doubles the energy; the realistic scenario suggests the cone disintegrates before reaching the promised depth.

The error of confusing kinetic energy with depth

Kinetic energy is calculated as ½ mv². If you double the mass, you double the energy. Up to this point, the reasoning is correct. The problem lies in the next step: assuming that this energy translates entirely into depth. It does not. Terrain resistance, projectile shape, and material hardness determine how far the warhead advances. A meteorite, despite its enormous mass, barely peine a few meters. The reason is simple: it is not designed to dig in. Anti-bunker missiles are, but their maximum peine is around 6 meters for the heaviest US model, and 20 meters for the Russian KAB-1500L-Pr bombs used in Syria. None of these figures come close to the 150 meters attributed to the Kinzhal.

Some argue that the Kinzhal reached 150 meters of depth at the start of the war in 2022. This data, repeated without independent verification, is used as proof that deep peine is possible. But even accepting it, extrapolating to 500 meters by tripling the mass lacks physical basis. Newton's formula, according to the English Wikipedia article cited in the discussion, only serves for a very narrow range of subsonic speeds. At Mach 10, the projectile behaves differently.

What happens to the explosive at Mach 10?

The question no one answers clearly is how the explosive charge survives an impact at Mach 10. Detonators, chips, and wiring would have to withstand brutal deceleration. At those speeds, the shock wave generated upon impact is astronomically large. A chemical explosive does not survive even a meter before detonating. That is why anti-bunker missiles combine a dense metal peine head with a delayed explosive charge. But at Mach 10, such delay is technically unfeasible.

The calculation circulating in the forum is revealing: if the maximum payload is 80 kg and the impact velocity is 3,600 m/s, the kinetic energy is 518.4 megajoules, equivalent to 124 kg of TNT. If those 80 kg were pure TNT, the energy would be lower. In other words, more explosive means less total energy. The conclusion is counterintuitive: a hypersonic missile with an explosive charge has less peine power than one impacting solely with its metallic mass.

The Israeli strategy: soften then peine

The comparison with the Israeli attack on a Hezbollah bunker in Lebanon appears several times in the discussion. According to the posts, Israel launched up to five anti-bunker missiles sequentially on the same spot. First they softened the terrain, then they peine. This sequence, acknowledged by several participants, is more effective than a single giant missile. The reason is that each successive impact finds already fractured material, reducing resistance.

The Russian Oreshnik, presented as a revolutionary weapon, would not exit the atmosphere to avoid anti-missile systems. This limits its estimulante ilegal and range. According to the calculations being discussed, it takes five minutes to reach its target. It is not an immediate response weapon. And its real peine capacity remains to be seen. As one participant notes, there is a lack of evidence from actual use. Where it impacts, the damage will be brutal, but localized.

The energy problem of lifting double the mass

Increasing the missile's mass is not free. To lift double the mass to the same altitude requires more than double the energy, because gravity and air resistance must be overcome. Aerodynamic drag is proportional to the square of the velocity. At Mach 10, the heat generated by friction is enormous and must be dissipated. This forces a complete redesign of the missile. Simply lengthening it is not enough.

The most optimistic calculation assumes that doubling the mass doubles the kinetic energy. The pessimistic scenario starts from the premise that the structure cannot hold, the explosive detonates prematurely, or the cone deforms and loses peine capability. In the middle lies reality: no hypersonic missile has demonstrated peine 500 meters of terrain. Not even 150. The 2022 Kinzhal data still lacks independent confirmation.

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The discussion shifts toward the technical viability of detonators at Mach 10. No one has explained how a chip survives deceleration of thousands of g-forces. The most honest answer is that it does not survive. The hypersonic missile is a kinetic weapon, not an explosive one. Its power resides in the impact energy, not in the payload it carries. And that energy, no matter how much mass you add, does not translate linearly into depth. Physics does not forgive.