The National Institute for Aerospace Technology "Esteban Terradas" (Spanish: Instituto Nacional de Técnica Aeroespacial «Esteban Terradas» or INTA) is an autonomous agency of the Spanish public administration dependent on the Secretariat of State for Defence (SEDEF). It is responsible for the aerospace, aeronautics, hydrodynamics, and defense and security technologies research. The INTA was established in 1942, as the National Institute of Aeronautical Technology (Instituto Nacional de Técnica Aeronáutica), and it was integrated in the Ministry of the Air.