| Monocoupe 90 | |
|---|---|
 Monocoupe 90A | |
| General information | |
| Type | Light Trainer and Racer |
| Manufacturer | Monocoupe Aircraft |
| Designer | Don A. Luscombe |
| Primary users | Civil Aviation |
| Number built | 324 (all models)[1] |
| History | |
| Introduction date | 1928 |
| First flight | April 1, 1927 |
TheMonocoupe 90 was a two-seat, light cabin airplane built byDonald A. Luscombe forMonocoupe Aircraft.[2] The first Monocoupe (Model 5) was built in an abandoned church inDavenport, Iowa, and first flew on April 1, 1927.[3] Various models were in production until the late 1940s.
TheMonocoupes were side-by-side two-seat lightplanes of mixed wood and steel-tube basic construction with fabric covering. A braced high-wingmonoplane with fixed tailskid landing gear, and the reverse curve rear fuselage lines that were to become one of the signature identifier features of the Monocoupes.[2] The fuselage framework was built up of welded steel tubing in a rigid, triangular-framedWarren truss form for the side panel structures, heavily faired to shape withdural metal sheet formers and wooden fairing strips. The wings were built up of solidspruce spars with wing ribs ofbasswood webs and spruce cap-strips. The leading edges were covered with dural metal sheet and the entire framework was covered in fabric.[4]
The aircraft was powered originally by either a 60 hp (45 kW)Anzani engine or the unsuccessful 65 hp (48 kW)Detroit Air-Cat radial.[2] TheModel 22 was the first light aircraft awarded atype certificate (number 22) and in 1930 it was fitted with theVelie M-5 62 hp (46 kW) five-cylinder radial engine to become theModel 70.[3]
In 1930 Monocoupe introduced theModel 90 with refined lines and a fuselage that was slightly longer and wider, this being sold inModel 90 andModel 90A versions with a 90 hp (67 kW)Lambert R-266 radial engine. TheMonocoupe 90 DeLuxe introduced trailing edge flaps, wheel speed fairings and an improved engine cowling. TheModel 90AF was fitted with a 115 hp (86 kW)Franklin engine. TheModel 90AL hadAvco Lycoming engines. TheModel 90J was introduced in 1930 with a 90 hp (67 kW)Warner Scarab Jr engine.
The final two high performance Monocoupe models developed from the Model 90 were theModel 110 with a 110 hp (82 kW)Warner Scarab, and theModel 125 with a 125 hp (93 kW)Kinner B-5 engine. TheMonocoupe 110 Special was a clipped wing racing aircraft. TheMonocoupeModel 70V of 1932, had the low-powered 65 hp (48-kW)Velie M-5 engine reintroduced to provide more economical operation at the cost of a fall in performance.[2]
In 1941Monocoupe combined with three other companies to formUniversal Molded Products Corp. 20Model 90AFs were bought by theUSAAF, who designated them theUniversal L-7, for transfer to theFree French Forces. One was lost during delivery.[5]
Aircraft production halted during World War II, resuming briefly in 1948-1950 under the nameMonocoupe Airplane and Engine Corporation.[6]
The last of this remarkable line of two-seat aircraft was theMonocoupe D-145 of 1934, a high-performance version with a slightly enlarged cabin and powered by a 145 hp (108 kW)Warner Super Scarab engine.[2]
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The majority of the Monocoupe 90s to be built were sold to and flown by private pilot owners.
19 delivered early 1943 by sea to Abu Sweir,Egypt, to be reassembled byRAF MU 109.[5] Main delivery to create a flying school (GE 11) in Rayack,Syria, opening September 1, 1943. The Monocoupe 90 was too sensitive to be used for basic training and many accidents occurred until school disbandment January 4, 1944.[5] One aircraft survived the war and remained on the French civil register until written-off in 1962.[8] 5 aircraft delivered toMadagascar in early September 1943 and operated byEscadrille d'Avions Sanitaires et de Liaison (EASL = Liaison and Medical Flight) based at Ivato.[8] EASL becameEscadrille de Liaison et de Commandement (ELC) on January 1, 1944, then SAL-51 and last SLA-50. The last two Monocoupes were sold to local aéro-club in 1948.[8]
Data from Specifications of American Airplanes[9]
General characteristics
Performance
Related development
Aircraft of comparable role, configuration, and era
