Risk assessment carrier - missione DTFT0

The Unmanned Space Vehicle test flights use an aircraft with a weight of 1300kg and a length of 7m. The first launch had been planned at the Stratospheric Balloon Launch Facilities of the Italian Space Agency in Trapani-Milo, Sicily. An heavy stratospheric balloon had been chosen to drop the aircraft at the predefined altitude. The aircraft demonstrator after a free fall acceleration to transonic velocity, through a horizontal flight reduces its speed in order to deploy a parachute for an appropriate splash-down into the predefined safe area of the central Mediterranean Sea. The document analyzes the most critical phase of the balloon flight (the ascent to floating altitude inside the Sicily island). It defines the emergency conditions of the mission and supplies results and details on risk assessment.