Could heavy shells be adapted into air-launched rockets?
Short answerPossibly, but the decisive question is what operational role they would fill that an existing weapon does not already cover.
NotesA proposed air-launched shell or rocket might be technically possible, but it still needs a target and an operational role. The device adds value only if it covers a mission that existing weapons cannot already perform adequately. Procurement should begin with a requirement rather than treating engineering feasibility as proof of military usefulness.