The B.35 was designed to meet a 1935 requirement by the Czechoslovakian Air Force for a replacement for their B-534 fighter biplanes. The B.35 was an elegant, low-wing monoplane with an elliptical wing. The fuselage was constructed from welded steel tube, covered in metal ahead of and including the cockpit and fabric aft of the cockpit, while the wing was of entirely wooden construction. Rather anachronistically, the Air Force specified a fixed tailwheel undercarriage for the aircraft, in the hope that this would speed development, as the mechanism for retracting the undercarriage was not yet available.[1]
The first prototype, the B-35/1, displayed excellent flying characteristics and high speed and was originally powered by a Hispano-Suiza 12Ydrspiston engine. The powerplant was later changed to a 12Ycrs with an identical power output, but with provision for an autocannon to be fitted between the cylinder banks to fire through the propeller hub. Testing continued until 22 November 1938, when the aircraft was destroyed in a crash that killed the Military Technical and Aeronautical Institute test pilot Arnošt Kavalec.[2] Nevertheless, a second prototype, B-35/2, was already reaching completion, and was fitted with redesigned ailerons and flaps. It first flew on 30 December with testing beginning in earnest in February 1939. A preproduction series of ten aircraft was ordered, but before these could be built, Czechoslovakia was occupied by Germany in March 1939.
Development however was resumed under German control, with the substantially revised B.35/3 flying in August 1939. The elliptical leading edges of the wings had been replaced with straight ones, and an outward-retracting main undercarriage was fitted. This prototype was the first to actually carry its intended armament. With German markings and the registration D-IBPP, it was displayed at the Salon de l'Aéronautique[clarification needed] in Brussels, where enough interest was generated to spur development of an improved version of the aircraft as the B.135.[3]
Variantsedit
B-35/1: First prototype.
B-35/2: Second prototype.
B-35/3: Third prototype.
Specifications (B.35/1)edit
Scale model, showing the original elliptical wing of the B.35
Bílý, Miroslav; Bernád, Dénes; Kučera, Pavel (2003). Avia B-35/B-135 (in Czech and English). Praha, Czech Republic: MBI. ISBN80-86524-03-5..
Green, William. War Planes of the Second World War, Fighters, Volume One. London: Macdonald & Co.(Publishers) Ltd., 1960 (10th impression 1972). ISBN0-356-01445-2.
Taylor, Michael J. H. Jane's Encyclopedia of Aviation. London: Studio Editions, 1989.
World Aircraft Information Files. London: Bright Star Publishing. (pages=File 889 Sheet 85)
External linksedit
Wikimedia Commons has media related to Avia B-35.
Article from Flying Review International, April 1968 2015-09-24 at the Wayback Machine
History (in Russian) and photographs of the B.35
Text and photographs of accident of B.35/1
October 29, 2023
avia, designation, fighter, aircraft, built, czechoslovakia, shortly, before, world, 35role, fightermanufacturer, aviadesigner, františek, novotnýfirst, flight, september, 1938number, built, contents, design, development, variants, specifications, also, refere. The Avia B 35 RLM designation Av 35 was a fighter aircraft built in Czechoslovakia shortly before World War II B 35Role FighterManufacturer AviaDesigner Frantisek NovotnyFirst flight 28 September 1938Number built 3 Contents 1 Design and development 2 Variants 3 Specifications B 35 1 4 See also 5 References 6 External linksDesign and development editThe B 35 was designed to meet a 1935 requirement by the Czechoslovakian Air Force for a replacement for their B 534 fighter biplanes The B 35 was an elegant low wing monoplane with an elliptical wing The fuselage was constructed from welded steel tube covered in metal ahead of and including the cockpit and fabric aft of the cockpit while the wing was of entirely wooden construction Rather anachronistically the Air Force specified a fixed tailwheel undercarriage for the aircraft in the hope that this would speed development as the mechanism for retracting the undercarriage was not yet available 1 The first prototype the B 35 1 displayed excellent flying characteristics and high speed and was originally powered by a Hispano Suiza 12Ydrs piston engine The powerplant was later changed to a 12Ycrs with an identical power output but with provision for an autocannon to be fitted between the cylinder banks to fire through the propeller hub Testing continued until 22 November 1938 when the aircraft was destroyed in a crash that killed the Military Technical and Aeronautical Institute test pilot Arnost Kavalec 2 Nevertheless a second prototype B 35 2 was already reaching completion and was fitted with redesigned ailerons and flaps It first flew on 30 December with testing beginning in earnest in February 1939 A preproduction series of ten aircraft was ordered but before these could be built Czechoslovakia was occupied by Germany in March 1939 Development however was resumed under German control with the substantially revised B 35 3 flying in August 1939 The elliptical leading edges of the wings had been replaced with straight ones and an outward retracting main undercarriage was fitted This prototype was the first to actually carry its intended armament With German markings and the registration D IBPP it was displayed at the Salon de l Aeronautique clarification needed in Brussels where enough interest was generated to spur development of an improved version of the aircraft as the B 135 3 Variants editB 35 1 First prototype B 35 2 Second prototype B 35 3 Third prototype Specifications B 35 1 edit nbsp Scale model showing the original elliptical wing of the B 35General characteristics Crew one pilot Length 8 50 m 27 ft 11 in Wingspan 10 85 m 35 ft 7 in Height 2 60 m 8 ft 6 in Wing area 17 00 m2 183 sq ft Empty weight 1 690 kg 3 726 lb Gross weight 2 200 kg 4 850 lb Powerplant 1 Hispano Suiza 12Ycrs Twelve cylinder supercharged liquid cooled 60 V12 engine 640 kW 860 hp Performance Maximum speed 495 km h 308 mph 268 kn Range 500 km 311 mi 270 nmi Rate of climb 13 0 m s 2 560 ft min Wing loading 129 41 kg m2 26 50 lb sq ft See also edit nbsp Aviation portalRelated development Avia B 135Aircraft of comparable role configuration and era Fokker D XXIReferences editNotes Bily Bernad amp Kucera 2003 p 11 Bily Bernad amp Kucera 2003 p 20 Bily Bernad amp Kucera 2003 pp 36 45 BibliographyBily Miroslav Bernad Denes Kucera Pavel 2003 Avia B 35 B 135 in Czech and English Praha Czech Republic MBI ISBN 80 86524 03 5 Green William War Planes of the Second World War Fighters Volume One London Macdonald amp Co Publishers Ltd 1960 10th impression 1972 ISBN 0 356 01445 2 Taylor Michael J H Jane s Encyclopedia of Aviation London Studio Editions 1989 World Aircraft Information Files London Bright Star Publishing pages File 889 Sheet 85 External links edit nbsp Wikimedia Commons has media related to Avia B 35 Article from Flying Review International April 1968 Archived 2015 09 24 at the Wayback Machine History in Russian and photographs of the B 35 Text and photographs of accident of B 35 1 Retrieved from https en wikipedia org w index php title Avia B 35 amp oldid 1181383859, wikipedia, wiki, book, books, library,
