Blast fence

Claim 1

IN A BLAST FENCE ADAPTED TO BE INSTALLED ON A GROUND AREA TO RECEIVE AND DEFLECT THE BLAST FROM AN AIRCRAFT POWER UNIT OF THE JET TYPE WITH AFTERBURNER, MEANS FORMING A SUBSTANTIALLY IMPERVIOUS BLAST DEFLECTING SURFACE SMOOTHLY CURVED TO BE CONCAVE AS VIEWED FROM THE SOURCE OF THE BLAST, THE CURVATURE OF SAID SURFACE BEING SUCH THAT A JET BLAST DIRECTED AGAINST THE SURFACE IS DIRECTED UPWARD FROM THE UPPER EDGE OF THE FENCE, AND A DEFLECTING SURFACE SUPPORTING STRUCTURE; SAID MEANS BEING OF CORRUGATED MATERIAL WITH THE RIBS AND VALLEYS OF THE CORRUGATIONS IN HORIZONTAL PLANES AND HAVING A LEADING EDGE PROXIMATE THE GROUND AND AN UPPER DISCHARGE EDGE IN REAR OF THE LEADING EDGE; SAID SUPPORTING STRUCTURE COMPRISING A SERIES OF UNIFORMLY CURVED, SUBSTANTIALLY PARALLEL, ROLLED STEEL STRUCTURAL MEMBERS TO WHICH ARE SECURED AT CLOSELY SPACED INTERVALS ALONG THEIR LENGTHS, SAID CORRUGATED MATERIAL; EACH ROLLED STEEL STRUCTURAL MEMBER BEING SECURED TO THE GROUND AT ITS FORWARD LEADING END, AND BEING SECURED TO THE GROUND AT A SINGLE POINT BEHIND SAID LEADING END THROUGH A PORTION OF SAID SUPPORTING STRUCTURE COMPRISING AT LEAST ONE SLOPING SHORING STRUT FASTENED TO THE ROLLED STEEL MEMBER , WHEREBY THE PRESSURE OF THE BLAST IS TRANSMITTED UNIFORMLY TO THE GROUND AT TWO SPACED POINTS PER EACH ROLLED STEEL STRUCTURAL MEMBER, THAT IS, ONE POINT AT THE FRONT OF EACH ROLLED STEEL STRUCTURAL MEMBER AND THE OTHER POINT AT THE REAR OF EACH SLOPING SHORING STRUT, AND SAID HORIZONTAL ARRANGEMENT OF THE VALLEYS OF THE CORRUGATIONS PRODUCES A VORTEX GENERATOR EFFECT WHICH ELIMINATES VIBRATION.