The Aero A.20 was a biplane fighter aircraft built in Czechoslovakia in 1923. It was evaluated for Czechoslovak Air Force service against Aero's competing A.18 and A.19 designs, a competition that the A.18 won, meaning that this aircraft never entered production, and only a single prototype was ever built.^[1][2]

Specifications (A.20)

General characteristics

• Crew: 1
• Length: 6.6 m (21 ft 8 in)
• Wingspan: 9.7 m (31 ft 10 in)
• Wing area: 23.3 m² (251 sq ft)
• Empty weight: 784 kg (1,728 lb)
• Max takeoff weight: 1,080 kg (2,381 lb)
• Powerplant: 1 × Skoda-built Hispano-Suiza 8Fb V-8 water-cooled piston engine, 220 kW (300 hp)

Performance

• Maximum speed: 225 km/h (140 mph, 121 kn)
• Service ceiling: 7,500 m (24,600 ft)
• Rate of climb: 5.88 m/s (1,157 ft/min)

Armament

• Guns: 2× 7.7 mm (0.303 in) Vickers machine guns