Convertible airplane

In an airplane including a fuselage having a leading edge having on opposite sides at least three rollers rotatably mounted on substantially horizontal axles, which are distributed over substantially the periphery of said fuselage-sides and connected therewith, a pair of elastic running tires contacting the ground in use and said rollers, at least one ground-contacting balancer, which is resiliently and rotatably connected with another side of said fuselage, power means operatively connected with said airplane and braking means operatively connected with said airplane and only a frontal pair of said rollers adjacent to the leading edge and to the ground;

• wherein said fuselage (0) comprises;
• (a) said leading edge (1) next to said frontal rollers, a trailing edge (20), a bottom surface (17, 45) and a larger surface (15, 16, 18), both of which surfaces extend into said edges;
• (b) two fins (12) attached to opposite sides of said fuselage, substantially parallel to its longitudinal centerline and about perpendicular to said edges, both of which fins project substantially away from said upper surface adjacent to said trailing edge;
• (c) two wings (3, 6), each attached to said opposite fuselage-sides adjacent to said leading edge and being substantially perpendicular to said fins and (d) at least one stabilizer (32, 36) attached to said fuselage adjacent to its trailing edge, whereby the sum of the dynamic reactions of the air against said fuselage, wings and stabilizer sufficiently lifts said tireroller from the ground in use.