A system for detaching an extraction unit (9, 11, 13) from an extractable unit (3, 5, 7) in aerial delivery, wherein the extraction unit (9, 11, 13) is adapted to pull the extractable unit (3, 5, 7) in an extraction direction through and/or out of a cargo bay of an aerospace vehicle for aerial delivery, wherein the system comprises a detachment unit (33, 35, 37) which is connectable to the extractable unit (3, 5, 7) and which is operable for controllably detaching the extraction unit (9, 11, 13) from the extractable unit (3, 5, 7), wherein the system further comprises a guiding system and a release unit (27, 29, 31), wherein the release unit (27, 29, 31) is movably attached to the guiding system and physically connected to the detachment unit (33, 35, 37) such that the release unit (27, 29, 31) is movable with the extractable unit (3, 5, 7) to which the detachment unit (33, 35, 37) has been connected in the extraction direction along the guiding system when the extractable unit (3, 5, 7) is pulled by the extraction unit (9, 11, 13) through and/or out of a cargo bay of an aerospace vehicle and wherein the release unit (27, 29, 31) is controllable to operate the detachment unit (33, 35, 37) to which the release unit (27, 29, 31) is connected for detaching the extraction unit (9, 11, 13) from the extractable unit (3, 5, 7) to which the detachment unit (33, 35, 37) has been connected characterized in that the release unit (27, 29, 31) is physically connected by a release line to the detachment unit (33, 35, 37) and the detachment unit (33, 35, 37) is adapted to only detach the extraction unit (9, 11, 13) from the extractable unit (3, 5, 7) if a load acting through the release line onto the detachment unit (33, 35, 37) exceeds a predetermined value. wherein the system comprises a detachment unit (33, 35, 37) which is connectable to the extractable unit (3, 5, 7) and which is operable for controllably detaching the extraction unit (9, 11, 13) from the extractable unit (3, 5, 7), wherein the system further comprises a guiding system and a release unit (27, 29, 31), wherein the release unit (27, 29, 31) is movably attached to the guiding system and physically connected to the detachment unit (33, 35, 37) such that the release unit (27, 29, 31) is movable with the extractable unit (3, 5, 7) to which the detachment unit (33, 35, 37) has been connected in the extraction direction along the guiding system when the extractable unit (3, 5, 7) is pulled by the extraction unit (9, 11, 13) through and/or out of a cargo bay of an aerospace vehicle and wherein the release unit (27, 29, 31) is controllable to operate the detachment unit (33, 35, 37) to which the release unit (27, 29, 31) is connected for detaching the extraction unit (9, 11, 13) from the extractable unit (3, 5, 7) to which the detachment unit (33, 35, 37) has been connected characterized in that the release unit (27, 29, 31) is physically connected by a release line to the detachment unit (33, 35, 37) and the detachment unit (33, 35, 37) is adapted to only detach the extraction unit (9, 11, 13) from the extractable unit (3, 5, 7) if a load acting through the release line onto the detachment unit (33, 35, 37) exceeds a predetermined value.