Additively manufacturable filter for gas turbine

A filter for removing particulates from a fluid provided to a combustor of a gas turbine, the filter extending along a center axis from a forward end to an aft end, the filter comprising:

• a base flange defining an open base at the forward end;
• a downstream segment defining the aft end;
• and
• a filter screen comprising a thin wall extending between the base flange and the downstream segment, the filter screen defining an interior and a plurality of apertures having a non-circular shape sized to permit the fluid to pass from the interior and prevent particulates from passing from the interior, wherein the filter screen defines a thickness, wherein an angle is defined between the center axis and the filter screen, and wherein a ratio between the angle and the thickness is between 5 degrees (deg)/inches (in) and 80 deg/in.

A method for fabricating a thin wall filter using an additive manufacturing system, the method comprising:

• (a) irradiating a layer of powder in a powder bed to form a fused region, the powder bed disposed on a build plate;
• (b) providing a subsequent layer of powder over the powder bed by passing a recoater arm over the powder bed;
• and
• (c) repeating steps (a) and (b) until the filter is formed on the build plate, wherein the filter comprises:
• a base flange defining an open base;
• a downstream segment;
• and
• a filter screen extending between the base flange and the downstream segment, the filter screen defining a plurality of apertures having a non-circular shape, wherein the filter screen defines a thickness, wherein an angle is defined between the center axis and the filter screen, and wherein a ratio between the angle and the thickness is between 5 degrees (deg)/inches (in) and 80 deg/in.