Aurore MB 04 Souris Bulle

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MB 04 Souris Bulle
Role Ultralight aircraft
National origin France
Manufacturer Aurore Sarl
Designer Michel Barry
Introduction circa 1998
Status In production
Unit cost
13,300 (kit only, 2011)

The Aurore MB 04 Souris Bulle (error: {{lang-xx}}: text has italic markup (help)) is a French ultralight aircraft, designed by Michel Barry and produced by Aurore Sarl of Sauvagnon. The aircraft is supplied as a kit or as plans for amateur construction.[1][2][3]

Design and development[edit]

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.[1][2]

The aircraft is made from wood with its flying surfaces covered in doped aircraft fabric. Its 11.25 m (36.9 ft) span wing employs single supporting struts. The standard recommended engine is the 60 hp (45 kW) JPX 4T two-stroke powerplant or a 45 hp (34 kW) Volkswagen air-cooled engine. The Souris Bulle has a glide ratio of 18:1.[1][2][3]

The standard day, sea level, no wind, take off with a 45 hp (34 kW) engine is 52 m (171 ft) and the landing roll is 91 m (299 ft).[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]

Specifications (MB 04 Souris Bulle)[edit]

Data from Bayerl and Purdy[1][3]

General characteristics

  • Crew: one
  • Capacity: one passenger
  • Length: 7.92 m (26 ft 0 in)
  • Wingspan: 11.25 m (36 ft 11 in)
  • Wing area: 15 m2 (160 sq ft)
  • Empty weight: 250 kg (551 lb)
  • Gross weight: 450 kg (992 lb)
  • Fuel capacity: 50 litres (11 imp gal; 13 US gal)
  • Powerplant: 1 × JPX 4T four cylinder, air-cooled, four stroke aircraft engine, 45 kW (60 hp)
  • Propellers: 2-bladed wooden


  • Maximum speed: 170 km/h (106 mph; 92 kn)
  • Cruise speed: 140 km/h (87 mph; 76 kn)
  • Stall speed: 60 km/h (37 mph; 32 kn)
  • Maximum glide ratio: 18:1
  • Rate of climb: 4 m/s (790 ft/min)


  1. ^ a b c d Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 28. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
  2. ^ a b c d Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 30. Flying Pages Europe SARL, 2015. ISSN 1368-485X
  3. ^ a b c d e Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 346. BAI Communications, 15 July 1998. ISBN 0-9636409-4-1

External links[edit]