Interlocking expandable air-drop package

A modular air-drop package assembly for delivering an internal payload, said assembly oriented along axial, radial and angular directions, and comprising:

• a front section with a hollow housing open at a rear end along the axial direction, said housing having an inner wall that include a first plurality of axially distributed sets of a second plurality of angularly spaced indentations, each indentation extending radially into said wall;
• and
• a rear section having a bulkhead that closes said housing at said rear end of said front section, a sleeve that extends axially forward from said bulkhead along the axial direction for insertion into said housing, and a third plurality of flanges that-extend forward from said bulkhead, said third plurality being equal to said second plurality, each flange having a radially extending tab that engages with a single indentation of said sets of indentations.