Mauboussin M.112

{{Short description|1930s French light aircraft}}  {{Infobox aircraft | name = Mauboussin M.112 | logo = | logo_size = | image = Mauboussin XII L'Aerophile September 1932.jpg | alt = | caption = | long_caption = | other_names = | aircraft_type = Two-seat touring aircraft | aim = | outcome = | related = | national_origin = France | manufacturer = Louis Peyret in the Zodiac factory | design_group = | designer = Pierre Mauboussin | builder = | issuer = | status = | owners = | primary_user = | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = 6 | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = | retired = | first_flight = 5 September 1931 | initiated = | in_service = | last_flight = | expected = | developed_from = | variants = | developed_into = Mauboussin M.120 series | preservation = | fate = | predecessors = | successors = | concluded = }}

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.<ref name=ABA1/><ref name=Lailes1/><ref name=GunMan/> It was a French, single-engine, two-seat, low cantilever wing touring monoplane.<ref name=Lailes1/> At least six were built.<ref name=ABA1/>

==Design and development== thumb|Mauboussin M.12 with cockpit canopy from Annuaire de L'Aéronautique 1931 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.<ref name= Lailes1/>

It was powered by an uncowled {{convert|40|hp|kW|abbr=on|disp=flip}} 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.<ref name=Lailes1/>

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 {{convert|2.2|m|ftin|abbr=on}}. Its tailskid, which could be replaced with a wheel, castered and had twin small bungee shock absorbers.<ref name= Lailes1/>

==Operational history==

Built at the Zenith factory,<ref name=ABA1/><ref name=Lailes3/> the M.XII first flew in September 1931.<ref name=ABA1/> In August 1932, flown by André Nicolle and registered as a Mauboussin M.112, it competed in the ''Challenge International de Tourisme 1932'' ({{langx|en| 1932 International touring aircraft Competition}}), which involved both technical tests and a {{convert|4500|mi|km|abbr=on|disp=flip}} circuit around Europe. It came last, but with its very low-powered engine, was the only aircraft in its class.<ref name=Flight1/><ref name=Flight2/><ref name=Lailes2/> It also appeared at the 1932 Paris Aero Salon.<ref name=Lailes3/> The French civil aircraft register included six M.112s, used by aero clubs and individuals.<ref name=ABA2/>

Aircraft in the Mauboussin M.120 Corsaire series which followed were similar to the M.112 but heavier and with more powerful engines.<ref name=ABA1/>

==Specifications== thumb|Mauboussin XII 3-view drawing from L'Aerophile Salon 1932 {{Aircraft specs |ref=Les Ailes, October 1931<ref name=Lailes1/> Performance figures calculated |prime units?=met  |genhide=

|crew=One pilot |capacity=One passenger |length m=6.34 |length note= |span m=11.75 |span note= |height m=2.86 |height note=to propeller-tip |wing area sqm=14.78 |wing area note= |aspect ratio=9.5 |airfoil= |empty weight kg=280 |empty weight note= |gross weight kg=516 |gross weight note= |max takeoff weight kg= |max takeoff weight lb= |max takeoff weight note= |fuel capacity={{convert|60|L|Impgal USgal|abbr=on}}<ref name=ABA1/> |more general=  |eng1 number=1 |eng1 name=Salmson 9Ad |eng1 type=9-cylinder radial |eng1 hp=40 |eng1 note= |power original= |more power=

|more performance= }}

==References== {{Commons category|Peyret-Mauboussin PM XII}} {{reflist|2|refs= <ref name=GunMan>{{cite book |last=Gunston |first=Bill |title=World Encyclopaedia of Aircraft Manufacturers: from the pioneers to the present day |year=1993|publisher=Patrick Stephens Limited|location=Sparkford, Somerset|isbn=9 781852 602055|page=198}}</ref>

<ref name=Lailes1>{{cite journal |last=Frachet |first=André |date=15 October 1931|title=L'avion léger Mauboussin M.XII|journal=Les Ailes|issue=539 |pages=3|url=http://gallica.bnf.fr/ark:/12148/bpt6k65557883/f3 }}</ref>

<ref name=Lailes2>{{cite journal |date=8 September 1932|title=Réflexions sur l'intérêst technique du Challenge Internationale de Tourisme|journal=Les Ailes|issue=586 |pages=8|url=http://gallica.bnf.fr/ark:/12148/bpt6k65601828/f8}}</ref>

<ref name=Lailes3>{{cite journal|date=4 November 1932|title=Zodiac-Mauboussin |issue=597|pages=8|journal=Les Ailes|url=http://gallica.bnf.fr/ark:/12148/bpt6k6560194g/f3}}</ref>

<ref name=Flight1>{{cite journal |date=19 August 1932 |title=International Touring Competition|journal= Flight|volume=XXIV |issue=34|pages=771 |url=https://www.flightglobal.com/pdfarchive/view/1932/1932%20-%200827.html}}</ref>

<ref name=Flight2>{{cite journal |last=Heinze |first=Edwin |date=2 September 1932 |title=The International Touring Competition|journal= Flight|volume=XXIV |issue=36 |pages=826 |url= https://www.flightglobal.com/pdfarchive/view/1932/1932%20-%200890.html }}</ref>

<ref name=ABA1>{{cite journal |date=December 2010 |title=The Mauboussin Corsaire|journal= Air Britain Archive|pages=2010/150–151 }}</ref>

<ref name=ABA2>{{cite journal |last=Bernard |first=Martin |last2=Sparrow|first2=Dave|last3=Espérou|first3=Bernard |title=F-1922 - The French Civil Register from 1922|journal= Air Britain Archive|pages=2014/124, 2015/024, 2015/073, 2015/127, 2016/134 }}</ref>

}}

Category:Peyret aircraft Category:Mauboussin aircraft Category:1930s French sport aircraft Category:Single-engined tractor aircraft Category:Low-wing aircraft Category:Aircraft first flown in 1931