Monospar aircraft utilised a single spar wing designed around a duraluminum warren girder, braced with pyramidal tie rods to take the torsional loads. Devised by H Steiger, the principle was first publicly exhibited in an experimental wing (known as the ST 1) shown at the Olympia Aero Show in July 1929. A larger wing (ST 2) was subsequently flown on Fokker EVIIB/3m J7986. Official tests demonstrated the strength of the system.
Inter-Wars
Monospar
The Monospar company was established in 1926 and was later absorbed by the General Aircraft Company.
Monocoupe 113

An American design circa 1929, with an enclosed cabin.
Engine: Veille 5-cyl, 65 hp
Seats: 2
Monocoupe 110
The Monocoupe 110 was powered by a Warner Scarab.
Monocoupe 90

Only eleven Mono¬coupe 90AL were built.

90A
90AL
Monocoupe 70

The Monocoupe 70 was powered with a Velie radial engine.
Mono Aircraft Corp / Monocoupe
1928: Mono-Aircraft Corp (pres: W L Velie),
1616 McGee St,
Moline IL.
USA
Mono Aircraft Corp was formed at Moline, Illinois, manufacturing a series of two-seat, high-wing cabin monoplanes during 1920s and 1930s, including Monocoupe 70 with Velie radial engine and Monocoupe 110 powered by Warner Scarab. Company acquired by Lambert Aircraft Corporation July 1934. In a succession of acquisitions and amalgamations the Mono identity disappeared, but the Monocoupe configuration influenced many later designs.
1929: Allied Aviation Industries Inc (pres: W L Velie Jr).
Möller Stomo 3 / Sturmer
Möller Flugzeugbau was founded at Bremen late 1930s, built Stomo 3 single-seat cabin monoplane powered by 18 hp Kroeber M.4 engine. Similar Moller Sturmer had a 53 hp Zundapp engine.
Möller Flugzeugbau
Germany
Möller Flugzeugbau was founded at Bremen late 1930s, built Stomo 3 single-seat cabin monoplane powered by 18 hp Kroeber M.4 engine. Similar Moller Sturmer had a 53 hp Zundapp engine.
Mohawk Aircraft Corp Spurwing / Redskin
Mohawk Aircraft Corporation formed at Minneapolis in 1927, developing their Spurwing two-seat monoplane with a Warner Scarab engine and similar three-seater Redskin.