I don't see any ear protection, but he could be using ear canal bud plugs.
Looks like his helmet was knocked off, adding to the dynamic of the moment.
I was thinking the pressure/sound wave was bouncing off is body to move forward, otherwise the wave would continue in the opposite direction of the projectile.
A slow motion gif or video would be much more telling than this still image.
https://forum.warthunder.com/index.p...s-and-physics/
Aerodynamics | BLOODHOUND SSC
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BLOODHOUND SSC will be the first – and, probably for a long time, the only – land-based vehicle in history to travel for a sustained period of time well above the speed of sound. Hence one of the crucial aspects of the aerodynamics of the Car is unique, and that’s the supersonic nature of the air flow, and in particular the presence of shock waves and their interaction with the ground.
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Quote:
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Figure 3: Flow patterns around the ‘side-by-side’ front wheel configuration
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http://www.bloodhoundssc.com/project...r-chassis/nose
Video:
Anatomy of the Car - The Nose
Quote:
Published on Jan 27, 2017
A brand new series of programmes that will take you through the inner workings of BLOODHOUND SSC - a 1000mph car aiming to break the World Land Speed Record!
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Video claims that the rear wheel fairings see supersonic air before the nose cone does................other interesting things in the video as well.
Many interesting images pop up when using the Google image search phrase:
"bloodhound ground pressure wave aerodynamics"