Separable joiner

A joiner for an airframe, the joiner comprising:

• a first portion configured to fixedly mount to a first elongate structural member that extends in a first direction, the first portion comprising:
• a first body including a first receiving surface adapted to receive the first elongate structural member, and
• a group of first coupling structures disposed on the first body, the group of first coupling structures including first engagement surfaces;
• and
• a second portion configured to fixedly mount to a second elongate structural member that extends in a second direction, the second direction being at an angle to the first direction, and the second portion comprising:
• a second body including a second receiving surface adapted to receive the second elongate structural member, and
• a group of second coupling structures disposed on the second body, the group of second coupling structures including second engagement surfaces,
• wherein the first coupling structures are configured to mate with the second coupling structures such that the first engagement surfaces engage the second engagement surfaces so as to transfer loads between the second portion and first portion and to limit relative movement between the first portion and second portion with respect to the first direction and with respect to a vertical direction, and
• wherein the second portion includes a ramped surface adapted to separate the second portion from the first portion when the second portion moves with respect to the first section along the second direction.