The first project was the tandem seat acrobatic aircraft. The wing used a symmetric Eppler airfoil section.
The fuselage was re-lofted into a side by side configuration but shared the common wing and tail to the RA-2. Another version for the RA-2 and RA-3 were to use another common wing but with traditional cambered sections.
Why stick to only low wing aircraft... A new high wing aircraft was also envisioned and a preliminary design review conducted.
Rud Aero purchased the Javelin prototype. A rendition is shown that moved the engines outside onto pylons. A new wing and tail were to be created. The capabilities of the aircraft were improved all around.