|SIPA S.901 at Berck-sur-Mer in May 1957|
|Role||Personal and trainer aircraft|
|First flight||15 May 1947|
|Primary users||private owners
French aero clubs
|Produced||1948 - early 1950s|
The SIPA S.90 was a French-built two-seat light touring and training aircraft of the 1940s and 1950s.
The SIPA S.90 was designed by Yves Gardan for the Societe Industrielle pour l'Aeronautique (SIPA). The prototype first flew on 15 May 1947, winning a French government competition for a new light two-seat aircraft for operation by the French aero clubs.
The initial production S.90 was a low-wing aircraft with fixed tailwheel undercarriage and side-by-side seating for two. It was powered by a 75 hp (56 kW) Mathis G4F engine. Four examples were built.
Production and service
100 aircraft were ordered by the French government, on behalf of the aero clubs, and these were powered by the 75 hp (56 kW) Minie 4DC engine as the SIPA S.901. The first made its initial flight on 25 June 1948. Deliveries were completed in the early 1950s. Various engines were later installed in the S.901, giving rise to new model numbers.
In later years, the S.90 series readily found buyers in the secondhand market and examples have flown with private owners in Belgium, Germany, Switzerland and the United Kingdom. Nine further aircraft were built later with plywood covering in lieu of fabric, receiving new designations. In 2001, 15 examples remained airworthy in France, Switzerland and the UK.
Total production of all models was 113 aircraft.
The following variants were produced:
- 4 aircraft with 75 hp (56 kW) Mathis G4F engine
- 100 aircraft with 75 hp (56 kW) Minie 4Dc-32 engine. Most were re-engined as follows.
- S.901 with 85 hp (63 kW) Continental C85-12F engine
- S.901 with 90 hp (67 kW) Continental C90-14F engine
- S.901 with 75 hp (56 kW) Salmson 5AQ-01 engine
- 2 new aircraft as S.902 but with plywood-covered fuselage and wings
- 1 new aircraft as S.91 with 85 hp (63 kW) Mathis 4GB-62 engine
- 1 new aircraft as S.91 with 75 hp (56 kW) Salmson 5AQ-01 engine
- 5 new aircraft as S.91 with 90 hp (67 kW) Continental C90-8F engine
Specifications (SIPA S.902)
Data from Simpson
- Crew: one
- Capacity: one passenger
- Length: 18 ft 10 in (5.74 m)
- Wingspan: 28 ft 8 in (8.74 m)
- Height: 5 ft 9 in (1.75 m)
- Empty weight: 807 lb (366 kg)
- Useful load: 516 lb (234 kg)
- Max. takeoff weight: 1,323 lb (600 kg)
- Powerplant: 1 × Continental C85-12F, 85 hp (64 kW)
- Propellers: 1 prop, 1 per engine
- Maximum speed: 134 mph (117 kn) 217 km/h
- Cruise speed: 120 mph (104 kn) 194
- Range: 315 miles (273 nmi) 510 km
- Power/mass: 15.6 lb/hp (0.11 kW/kg)
|Wikimedia Commons has media related to SIPA aircraft.|
- Simpson, 2005, p. 280
- Green, 1955, p. 171
- Simpson, 2005, p. 280-281
- Simpson, 2001, p. 508