Alfa was the designation of an Italian solid propellant IRBM program that started in 1971 under the control of the GRS (Gruppo di Realizzazione Speciale Interforze). Starting as a development effort for a study on efficient solid-propellant rockets, the Alfa rocket was planned as two-stage rocket. Test launches with upper stage mockup from Salto di Quirra took place between 1973 and 1975. The Alfa was long and had a diameter of . The first stage of the Alfa was long and contained 6 t of solid rocket fuel. It supplied a thrust of 232 kN for a duration of 57 seconds.