The 5/2 was based on de Monge's earlier Lumière-de Monge racer (possibly designated de Monge 5/1) and was of metal construction with both wood and metal skinning.^[1] The 5/2 was powered by a 300 hp (224 kW) Hispano-Suiza 8Fb inline piston engine.^[1] The parasol-wing fighter retained the ability inherited from the Lumière-de Monge to attach stub-wings to convert the aircraft to a sesquiplane.^[1] The aircraft was intended to use two forward-firing synchronised machine guns but they were not fitted to the prototype.^[1] The 5/2 was first flown in 1923, but after testing, it was assessed as too advanced for use and development was abandoned.^[1]

Data from The Illustrated Encyclopedia of Aircraft,^[1] Jane's all the World's Aircraft 1924^[2]

General characteristics

• Crew: 1
• Length: 7.15 m (23 ft 5 in)
• Wingspan: 10.90 m (35 ft 9 in)
• Height: 2.70 m (8 ft 10 in)
• Wing area: 24.00 m² (258.3 sq ft)
• Gross weight: 1,392 kg (3,069 lb)
• Powerplant: 1 × Hispano-Suiza 8Fb 8-cylinder inline piston, 220 kW (300 hp)
• Propellers: 2-bladed fixed-pitch propeller, 2.25 m (7 ft 5 in) diameter

Performance

• Maximum speed: 270 km/h (170 mph, 150 kn) at sea level; 250 km/h (160 mph; 130 kn) at 4,000 m (13,000 ft)
• Service ceiling: 7,500 m (24,600 ft)
• Wing loading: 58 kg/m² (12 lb/sq ft)
• Power/mass: 0.161 kW/kg (0.098 hp/lb)

Armament

• Guns: two forward-firing synchronised 0.303 in (7.70 mm) machine-guns (intended)

• Bruner, Georges (1977). "Fighters a la Francaise, Part One". Air Enthusiast (3): 85–95. ISSN 0143-5450.