The Souris Bulle was designed to comply with the Fédération Aéronautique Internationale microlight rules. The aircraft features a strut-braced high-wing, a two-seats-in-tandem enclosed cockpit under a bubble canopy, fixed conventional landing gear and a single engine in tractor configuration. The rear seat has very limited visibility.[2]
The aircraft is made from wood with its flying surfaces covered in doped aircraft fabric. Its 11.251NaN1 span wing employs single supporting struts. The standard recommended engine is the 600NaN0 JPX 4T two-stroke powerplant or a 450NaN0 Volkswagen air-cooled engine. The Souris Bulle has a glide ratio of 18:1.[2] [3]
The standard day, sea level, no wind, take off with a 450NaN0 engine is 520NaN0 and the landing roll is 910NaN0.[3]
In 2015 the aircraft kit was €13,300 and plans sold for €380.[2] The manufacturer estimates the construction time from the supplied kit as 650 hours.[3]