Wind tunnel model and method

Claim 1

A method of making a perforated metal structure having precise locations of the perforations therein comprising the steps of: a. assembling a plurality of tubular members in fixed, spaced relationship, b. casting a material around said plurality of tubular members so as to completely enclose one end of the assembled tubes, f. finishing the cast structure to the desired specifications while maintaining one end of the tubular members open, d. x-raying the finished structure to establish the precise location of the individual tubes, e. drilling a hole through the cast structure to intersect with each individual tube at the desired distance along the length thereof and by using the x-ray film as a template.

Claim 2

A method of making a perforated metal structure having precise locations of the perforations therein comprising the steps of: a. assembling a plurality of tubular members in fixed, spaced relationship, b. casting a material around said plurality of tubular members so as to completely enclose one end of the assembled tubes, f. finishing the cast structure to the desired specifications while maintaining one end of the tubular members open, d. x-raying the finished structure to establish the precise location of the individual tubes, e. drilling a hole through the cast structure to intersect with each individual tube at the desired distance along the length thereof and by using the x-ray film as a template.

Claim 6

A method of constructing an aerodynamic wind tunnel test model having a series of openings therein for making pressure measurements at diverse locations on the model during a wind tunnel test, comprising the steps of: a. providing a plurality of tubular bodies of diverse lengths in a fixed array, b. closing one end of each of said tubular bodies, c. casting a solid material about said tubular bodies so as to form an aerodynamic configuration thereabout that embeds the closed ends of the tubular bodies adjacent the leading edge of the configuration while leaving the open ends thereof exposed at the trailing edge of the configuration, d. drilling a hole perpendicular to the individual tubular bodies through the cast solid so as to form an intersecting passageway perpendicular with the passageway in each of the tubular bodies and each perpendicular passageway being a different distance from the leading and trailing edge of the aerodynamic configuration than an adjacent passageway whereby pressure sensing instrumentation may be connected to the open end of each tubular body adjacent the trailing edge of the aerodynamic configuration to thereby make pressure measurements on the wind tunnel model at diverse locations thereof during a wind tunnel test.

Claim 7

A method of constructing an aerodynamic wind tunnel test model having a series of openings therein for making pressure measurements at diverse locations on the model during a wind tunnel test, comprising the steps of: a. providing a plurality of tubular bodies of diverse lengths in a fixed array, b. closing one end of each of said tubular bodies, c. casting a solid material about said tubular bodies so as to form an aerodynamic configuration thereabout that embeds the closed ends of the tubular bodies adjacent the leading edge of the configuration while leaving the open ends thereof exposed at the trailing edge of the configuration, d. drilling a hole perpendicular to the individual tubular bodies through the cast solid so as to form an intersecting passageway perpendicular with the passageway in each of the tubular bodies and each perpendicular passageway being a different distance from the leading and trailing edge of the aerodynamic configuration than an adjacent passageway whereby pressure sensing instrumentation may be connected to the open end of each tubular body adjacent the trailing edge of the aerodynamic configuration to thereby make pressure measurements on the wind tunnel model at diverse locations thereof during a wind tunnel test.