Supersonic interceptor concept model fighter Add comments Jun 242012 A 1955 NACA concept model of a supersonic interceptor powered by JP-5 burning turbojets. With a gross weight of 25,000 pounds, it would be capable of combat at Mach 2.5 to 3.0 with a ceiling of just over 60,000 feet. Leave a Reply Cancel reply Your Comment You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> Name (required) E-mail (required) URI Save my name, email, and website in this browser for the next time I comment. Δ