Combustor head arrangement

A combustor head arrangement, the arrangement comprising:

• a meter panel having a cold side and a hot side, the meter panel having an aperture and a slot each extending through the meter panel between the hot and cold sides;
• a heatshield comprising an aperture therethrough;
• at least one of the meter panel and the heatshield comprising a retaining feature on the cold side;
• one of the meter panel and the heatshield comprising an anti-rotation feature;
• and
• a burner seal sized to fit through the aperture in the meter panel from the hot side towards the cold side and rotatable between a first orientation and a second orientation, the burner seal comprising a tang configured to pass through the slot when the burner seal is in the first orientation and to be retained by the retaining feature and the anti-rotation feature when the burner seal is in the second orientation.

A method of assembling a combustor head, the method comprising:

• providing a meter panel having a cold side and a hot side, an aperture and a slot each extending through the meter panel between the hot and cold sides;
• inserting a burner seal through the meter panel aperture from the hot side, the burner seal having a tang that aligns with and passes through the slot in a first orientation of the burner seal;
• rotating the burner seal about its axis so that the tang is out of alignment with the slot;
• inserting a heatshield round the burner seal and through the meter panel aperture from the hot side;
• and
• retaining the burner seal in its second orientation using a retaining feature and an anti-rotation feature.