Reusable space transportation system

A space transportation system intended to carry a payload and be mounted on a space launcher, the transportation system comprising a fuselage extending mainly along a first direction, a first end, a second end opposite to the first end along the first direction, and a re-ignitable propulsion device located on said first end or on said second end,

• wherein the transportation system comprises a plurality of steerable flaps located at said second end and a control unit, the flaps being located at a distance of the fuselage of the transportation system whatever the step such that a first end of each flap closest to the second end of the fuselage is disconnected from the second end of the fuselage, each flap comprising an actuating means configured to modify an orientation of said flap at least in a plane parallel to the first direction, wherein each actuating means includes a mechanical arm configured to pivot each respective flap around a second direction perpendicular to the first direction, and said control unit being configured to control the propulsion device and individually control each actuating means to control the orientation of each of the flaps in order to implement:
• a launch step during which the propulsion device is off and the flaps are in a retracted position;
• a return from space step during which the control unit controls the actuating means to deploy the flaps and orient them to ensure stability and pilot the transportation system, the propulsion device being off;
• a landing step during which the control unit controls the propulsion device and the actuating means to orient the flaps to slow down and perform a rollover of the transportation system, wherein each of the respective flaps can be pivoted around the second direction during the rollover of the transportation system.