Aircraft egress system

A method for inflating a cavity of an egress aid of a craft, the method comprising:

• operating a prime mover to move a first gaseous matter through a first ingress port of an inflation duct to an inflation port;
• entraining a second gaseous matter from a second ingress port of the inflation duct with the first gaseous matter;
• inflating the cavity with the first gaseous matter and the second gaseous matter;
• and
• obstructing the first ingress port and the second ingress port with backpressure from the cavity.

An inflation duct for an egress pack, the inflation duct comprising:

• a housing defining:
• an inflation port;
• an axis;
• a flow direction oriented to the inflation port;
• a first ingress port defined by a first boundary and defining a primary flow path with the flow direction;
• a second ingress port defined by a second boundary and defining a secondary flow path in fluid communication with the primary flow path;
• and
• a first duct elongated along the axis and joined with the first ingress port on the first boundary as a divider between the first ingress port and the second ingress port.