Multi-direction hole for rail effusion
A heat shield panel for use in a gas turbine engine combustor is disclosed. In various embodiments, the heat shield panel includes a hot side, a cold side spaced from the hot side, a rail member disposed on the cold side proximate an outer perimeter, the rail member having an outer wall and an inner wall and an orifice extending through the rail member, from the inner wall to the outer wall, the orifice having an entrance portion having an entrance opening positioned on the inner wall and extending at least to an intermediate portion of the rail member and an exit portion having an exit opening positioned on the outer wall and extending at least to the intermediate portion of the rail member, the entrance portion of the orifice being angled relative to the exit portion of the orifice.
1. A heat shield panel for use in a gas turbine engine combustor, comprising:
a base member having a hot side surface, a cold side surface and an outer perimeter;
a rail member disposed on the cold side surface of the base member proximate a first portion of the outer perimeter, the rail member having an outer wall and an inner wall; and
an orifice extending through the rail member, from the inner wall to the outer wall, the orifice having
a first intersecting hole extending from an entrance opening positioned on the inner wall to a first exit opening positioned proximate the outer wall and
a second intersecting hole extending from a second exit opening positioned on the outer wall to a third exit opening positioned on the hot side surface,
wherein the first intersecting hole and the second intersecting hole intersect proximate an intermediate portion positioned intermediate the inner wall and the outer wall.
2. The heat shield panel of claim 1 , further comprising a first plug extending from the first exit opening to the intermediate portion and configured to allow a flow of cooling air to enter the entrance opening and to exit both the second exit opening and the third exit opening.
3. The heat shield panel of claim 1 , further comprising a first plug extending from the first exit opening to the intermediate portion and a second plug extending from the third exit opening to the intermediate portion, the first plug and the second plug configured to allow a flow of cooling air to enter the entrance opening and exit the second exit opening.
4. The heat shield panel of claim 3 , wherein the first plug comprises at least one of a braze and a weld.
5. The heat shield panel of claim 4 , wherein the second plug comprises at least one of a braze and a weld.
6. The heat shield panel of claim 1 , wherein the second exit opening is oriented with respect to the intermediate portion to direct an impingement flow toward a second heat shield panel.