page_title: Mauboussin M.112
section_title: Design and development
hierarchical_section_title: Mauboussin M.112 / Design and development
caption_attribution_description: English: Mauboussin M.12 photo from Annuaire de L'Aéronautique 1931
context_page_description: The Mauboussin M.112, M-12 or Mauboussin M.XII was originally called the Peyret-Mauboussin PM XII and was renamed when Mauboussin founded his own company in 1931, ending his partnership with Louis Peyret. It was a French, single-engine, two-seat, low cantilever wing touring monoplane. At least six were built.
context_section_description: The low, cantilever wing of the M.112 was built in three parts, a tapered centre-section which was part of the fuselage and trapezoidal outer panels with elliptical tips. Its aspect ratio of 9.5 was high for the time. The outer panels carried mild dihedral and full-span, narrow-chord ailerons. The wings were completely wooden, with twin box spars and alder plywood skin.
  It was powered by an uncowled 30 kW (40 hp) Salmson 9Ad nine-cylinder radial engine with its fuel tanks in the wing centre-section. Behind it, beyond a firewall, the wooden fuselage had a rectangular section defined by four longerons, though the upper decking was curved. It was covered in plywood. The M.112 had a pair of tandem seats over the wing, with the pilot at the rear. These seats could be open or enclosed by a removable cover. The fuselage tapered to the rear where the tail surfaces, also ply-covered, were straight-tapered and round tipped. Both horizontal and vertical surfaces had quite high aspect ratios and the vertical tail was tall; the horizontal tail was mounted on top of the fuselage. Both rudder and elevators were aerodynamically unbalanced.
  The M.112 had conventional, fixed landing gear.  Its mainwheels, fitted with brakes, were on cranked axles and drag struts, both hinged from the lower fuselage longerons. There were short, vertical Messier oleo struts from the outer axles to the forward wing spars in the centre-section, giving it a track of 2.2 m (7 ft 3 in). Its tailskid, which could be replaced with a wheel, castered and had twin small bungee shock absorbers.
caption: Mauboussin M.12 with cockpit canopy from Annuaire de L'Aéronautique 1931
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