If the projectile travels very fast, and thus is in a state of hypervelocity, the strength of the armour material becomes negligible – as by the impact both projectile and armour will melt and behave like fluids – and only its area density is an important factor. In this limiting case the projectile after the hit continues to penetrate until it has stopped transferring its momentum to the target matter. In this ideal case only momentum, area cross section, density and LOS-thickness are relevant. The situation of the penetrating metal jet caused by the explosion of the shaped charge of HEAT ammunition, forms a good approximation of this ideal. Therefore, if the angle is not too extreme, and the projectile is very dense and fast, sloping has little effect and no relevant deflection takes place.