Aero A.21

Aero A.21
Role	Night trainer aircraft
Manufacturer	Aero Vodochody
Primary user	Czech Air Force

The Aero A.21 was a biplane military trainer aircraft developed in Czechoslovakia from the Aero A.11 reconnaissance-bomber. The aircraft was developed specifically as a night-trainer, to teach Czech Air Force pilots instrument flying techniques.

Specifications (A.21)

General characteristics

• Crew: 2
• Length: 8.2 m (26 ft 11 in)
• Wingspan: 12.8 m (42 ft 0 in)
• Height: 3.1 m (10 ft 2 in)
• Wing area: 36.5 m² (393 sq ft)
• Empty weight: 1,080 kg (2,381 lb)
• Gross weight: 1,328 kg (2,928 lb)
• Powerplant: 1 × Breitfeld & Danek Perun I 6-cyl. water-cooled in-line piston engine, 130 kW (180 hp)

Performance

• Maximum speed: 170 km/h (110 mph, 92 kn)
• Service ceiling: 6,500 m (21,300 ft)
• Rate of climb: 2.35 m/s (463 ft/min)
• Wing loading: 36 kg/m² (7.4 lb/sq ft)
• Power/mass: 0.100 kW/kg (0.06 hp/lb)

Operators

• Czechoslovakia.

See also

Related development

• Aero A.11
• Aero A.12
• Aero A.22
• Aero A.25
• Aero A.29

Related lists

• List of military trainer aircraft

Bibliography

• Kudlicka, Bohumir (February 2002). "On "nocturne" tchéoslovaque: l'Aero A-21" [Czech Nightlife: The Aero A-21]. Avions: Toute l'Aéronautique et son histoire (in French) (107): 53–55. ISSN 1243-8650.