page_title: Avia BH-21
section_title: Specifications
hierarchical_section_title: Avia BH-21 / Specifications
caption_attribution_description: English: Avia BH-21 3-view drawing from NACA Aircraft Circular No.22
context_page_description: The Avia BH-21, first flown in 1925, was a robust biplane that served an important role in securing Czechoslovak national security during the period between World War I and World War II. As well as being a competent fighter, it was also an accomplished racer, winning several air races in 1925.
context_section_description: Data from Les Ailes, May 1925
  General characteristics
  Crew: One
  Length: 6.87 m (22 ft 6 in)
  Wingspan: 8.90 m (29 ft 2 in) upper wing slightly less
  Height: 2.74 m (9 ft 0 in)
  Wing area: 22 m² (240 sq ft)
  Empty weight: 765 kg (1,687 lb)
  Gross weight: 1,075 kg (2,370 lb)
  Fuel capacity: 140 kg (310 lb)
  Powerplant: 1 × Hispano-Suiza 8Fb V-8 water-cooled piston engine, 224 kW (300 hp)  at 1,850rpm
  Propellers: 2-bladed
  Performance
  Maximum speed: 250 km/h (155 mph; 135 kn)
  Stall speed: 90 km/h (56 mph; 49 kn)
  Range: 600–650 km (373–404 mi; 324–351 nmi)
  Time to altitude: 7,000 m (23,000 ft) in 35 min
  Armament
  Guns: 2 × 7.7 mm (0.303 in) Vickers machine guns in the upper front fuselage.
caption: Avia BH-21 3-view drawing from NACA Aircraft Circular No.22
exif: {"Image Orientation": "Horizontal (normal)", "Image XResolution": "96", "Image YResolution": "96", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Windows Photo Editor 10.0.10011.16384", "Image DateTime": "2018:07:06 08:56:39", "Image YCbCrPositioning": "Co-sited", "Image ExifOffset": "185", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "96", "Thumbnail YResolution": "96", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "506", "Thumbnail JPEGInterchangeFormatLength": "3318", "Thumbnail YCbCrPositioning": "Co-sited", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2018:05:05 09:24:23", "EXIF DateTimeDigitized": "2018:05:05 09:24:23", "EXIF ComponentsConfiguration": "YCbCr", "EXIF SubSecTimeOriginal": "10", "EXIF SubSecTimeDigitized": "10", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "1650", "EXIF ExifImageLength": "2270", "Interoperability InteroperabilityIndex": "\u0003\u0004\u0004\u0005", "Interoperability InteroperabilityVersion": "[3, 0, 0, 0]", "EXIF InteroperabilityOffset": "365"}