The blast of a detonated warhead is a shockwave
Shockwaves are produced by aircraft moving faster than the speed of sound (sonic booms) and are registered as sound on microphones. Blastwaves are kind of shockwaves from warheads which can keep their velocity by propagating in compressible material, but velocity will be diminished and bended, reflected or refracted in rigid materials.
Attached to the ceiling of the cockpit of the MH17 the CAM microphone was the only microphone which registered sound peak 1. This might be the blastwave of the detonated warhead of the BUK. Remember, on short distances the blastwave is faster than fragments:
The other microphones were in the middle of the cockpit space and received no sound peak 1. This might mean the cockpit hull functioned as a rigid defense against shockwaves. The cockpit hull consists of a strong frame of titanium. Then the blastwave of the missile likely was bended, reflected or refracted by the hull:
The blastwave was already on its way back and counteracted the speed of the fragments of the warhead, which intruded the cockpit and therefore were registered as sound peak 2.
So, there must be a critical region between fragments and target which becomes counterproductive for the effect of targets.
This effect will be stronger by surface normality of the hull of the MH17 (reflection by perpendicular impact angles) and by the extremely short distance of only one meter of the detonation point to the aircraft. Both conditions comply with our opinion.
The problem with the MH17 is the fragment density of the warhead seems insufficient to get the cockpit down within one second. This is the density showed below the first left window. We think this spot is about the center of surface normality of the cockpit hull to the warhead. And at a distance of 1 meter many more fragments are to be expected:
On the other hand most of the cockpit hull has not been retrieved.
Now like DSB we can remove the warhead up to 3 to 4 meters from the plane, but this gets the cockpit not separated from the hull within 1 second.
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