Abstract: The invention relates to the aerospace engineering and can be used for jettisoning boost rockets from an aircraft. The inventive device comprises a landing container (3) with an open end (4) provided with a high-pressure source (5). The freight to be jettisoned (2) is arranged in two sections inside the container (3) on mounting elements (10), one of which is embodied in the form of a calibrated support (9). The values of maximum efforts and acceptable lateral movements (13) of the supports (9) are chosen in such a way that a minimum positive allowance (12) between the container (3) and the freight (2) is provided. The supports (9) are provided with dampers. The aim of the invention is to reduce a transverse load affecting the freight to be jettisoned landing.