ENGINEERING DEVELOPMENT FOR THE BALLOON-EXPERIMENTAL TWIN TELESCOPE FOR INFRARED INTERFEROMETRY (BETTLL) PAYLOADTHIS PROPOSAL AND BUDGET REQUESTS THE CONTINUED SUPPORT OF JORDI VILA HERNENDEZ DE LORENZO (HEREAFTER MR. VILA) AND A VISITOR FROM THE ECOLE NATIONALE SUPERIEURE DE L'AERONAUTIQUE ET DE L'ESPACE (SUPAERO) IN FRANCE FOR THE DEVELOPMENT OF NEW HIGH ANGULAR RESOLUTION CAPABILITIES FOR BALLOON-BORNE ASTRONOMICAL OBSERVATIONS. SPECIFICALLY THE RESEARCH WILL CENTER ON THE NASA'S BALLOON EXPERIMENTAL TWIN TELESCOPE FOR INFRARED INTERFEROMETRY (BETTII) NOW BEING ENHANCED AT GODDARD SPACE FLIGHT CENTER. THE CUA PERSONNEL WILL WORK UNDER THE DIRECTION OF THE CUA PRINCIPAL INVESTIGATOR IN CLOSE PARTNERSHIP WITH NASA SCIENTISTS. THIS PROJECT COVERS A PROJECT WHICH IS QUITE SIMILAR TO THAT FOR A GRADUATE STUDENT FERNANDO ESTEVES WHICH IS ALSO SUBMITTED BY CUA TO NASA/GSFC.