For any others with an interest in obscure French light aircraft, here are two articles, a type sheet and the original factory brochure on the Farman F.451 Moustique (Mosquito) from my recent visit to the research library of the Musée de l'Air et de l'Espace in Le Bourget. This 1930s single-seat ultralight was the last (but for the two-seat F.455 prototype) in a series of conceptually similar Farman designs stretching back to 1919--all wire-braced, mid-wing single-seat monoplanes of generous span and modest power. The F.451 was the most successful of them all, built in respectable numbers for the day, a total of 46, as they were ordered for the government-sponsored Aviation Populaire flying movement.
Specifications (F.451)
Data from Les Avions Farman
General characteristics
Capacity: 1
Length: 6.40 m (21 ft 0 in)
Wingspan: 8.07 m (26 ft 6 in)
Height: 1.90 m (6 ft 3 in)
Wing area: 10.50 m2 (113.0 sq ft)
Empty weight: 151 kg (333 lb)
Gross weight: 285 kg (628 lb)
Powerplant: 1 × AVA 4 2-cylinder horizontally-opposed two-stroke, 19 kW (25 hp)
Propellers: 2-bladed wooden Merville Srs.639
Performance
Maximum speed: 130 km/h (81 mph; 70 kn)
Range: 350 km (217 mi; 189 nmi)
Specifications (F.451)
Data from Les Avions Farman
General characteristics
Capacity: 1
Length: 6.40 m (21 ft 0 in)
Wingspan: 8.07 m (26 ft 6 in)
Height: 1.90 m (6 ft 3 in)
Wing area: 10.50 m2 (113.0 sq ft)
Empty weight: 151 kg (333 lb)
Gross weight: 285 kg (628 lb)
Powerplant: 1 × AVA 4 2-cylinder horizontally-opposed two-stroke, 19 kW (25 hp)
Propellers: 2-bladed wooden Merville Srs.639
Performance
Maximum speed: 130 km/h (81 mph; 70 kn)
Range: 350 km (217 mi; 189 nmi)
