The Ava 4A was a low power flat-four (boxer engine) developed for very light aircraft in France in the 1930s. It was used by several prototypes and at least one production series.
Marcel Violet was a French racing driver who designed his own two-cylinder, two-stroke engines. He also designed a two stroke horizontally opposedflat-four, which was built under licence at L'agence general moteurs "Ava" by Jean Aubry of the Société J. Thibault, G Aubry et Cie, alloy metal specialists, as the Ava 4A.[1][2] It only produced 19 kW (25 hp)[1] and was intended to power small, low cost, single seat aircraft, replacing the aging Anzanis and completing with the French Mengin Type B and the older BritishBristol Cherub engines.
The Ava 4A was on display at the November 1936 Paris Salon.[3] It powered several prototypes and also the forty-six examples of the series production variant of the Farman Moustique, the F.451.[4]
VariantsEdit
Ava 4A-00
19 kW (25 hp), as described.
Ava 4A-02
Identical to 4A-00 except for 80 mm (3.15 in) bore and increased compression, giving 26 kW (35 hp) continuous power.[1] Weight 38 kg (84 lb).[3]
^ abcdGrey, C.G. (1972). Jane's All the World's Aircraft 1938. London: David & Charles. p. 40d. ISBN0715 35734 4.
^ ab"Belgian Aviation Preservation Association". Retrieved 21 February 2017.
^ ab"Les moteurs Ava". Les Ailes (938): 16. 19 November 1939.
^Liron, J.L. (1984). Les avions Farman. Paris: Éditions Larivère. p. 230.
October 20, 2023
power, flat, four, boxer, engine, developed, very, light, aircraft, france, 1930s, used, several, prototypes, least, production, series, type, flat, four, cooled, strokenational, origin, francemanufacturer, avadesigner, marcel, violet, contents, design, develo. The Ava 4A was a low power flat four boxer engine developed for very light aircraft in France in the 1930s It was used by several prototypes and at least one production series Ava 4AType Flat four air cooled two strokeNational origin FranceManufacturer AvaDesigner Marcel Violet Contents 1 Design and development 2 Variants 3 Applications 4 Survivors 5 Specifications 4A 00 5 1 General characteristics 5 2 Components 5 3 Performance 6 ReferencesDesign and development EditMarcel Violet was a French racing driver who designed his own two cylinder two stroke engines He also designed a two stroke horizontally opposed flat four which was built under licence at L agence general moteurs Ava by Jean Aubry of the Societe J Thibault G Aubry et Cie alloy metal specialists as the Ava 4A 1 2 It only produced 19 kW 25 hp 1 and was intended to power small low cost single seat aircraft replacing the aging Anzanis and completing with the French Mengin Type B and the older British Bristol Cherub engines The Ava 4A was on display at the November 1936 Paris Salon 3 It powered several prototypes and also the forty six examples of the series production variant of the Farman Moustique the F 451 4 Variants EditAva 4A 00 19 kW 25 hp as described Ava 4A 02 Identical to 4A 00 except for 80 mm 3 15 in bore and increased compression giving 26 kW 35 hp continuous power 1 Weight 38 kg 84 lb 3 Applications EditCarmier T 10 Dart Pup Dart Kitten Druine D 30 Turbulent Farman Moustique Jodel D 98 Bebe Mignet HM 14 Pou du Ciel SFAN II Starck AS90 New Look Tipsy SSurvivors EditA 4A 00 survives in a private collection and is sometimes exhibited on loan 2 Specifications 4A 00 EditData from Jane s All the World s Aircraft 1938 p 40d 1 General characteristics Type Air cooled flat four two stroke Bore 70 mm 2 76 in Stroke 70 mm 2 76 in Displacement 1 08 L 66 cu in Length 554 mm 21 81 in over propeller boss Width 550 mm 21 65 in Dry weight 37 kg 82 lb including mounting and propeller boss Opposing cylinders offset Cast iron cylinders with finned hemispherical alloy heads Single piece nitrided steel crankshaft with roller bearings and ball thrust bearing Light alloy crankcase Components Fuel system Amrac carburettor rotary inlet distribution valve One plug per cylinder two magnetos each firing two plugs Fuel type petroil 4 oil Cooling system airPerformance Power output Continuous 19 kW 25 hp at 2 300 rpm maximum 22 kW 30 hp at 2 500 rpm Specific fuel consumption 400 440 g kW 0 66 0 72 lb hp References Edit a b c d Grey C G 1972 Jane s All the World s Aircraft 1938 London David amp Charles p 40d ISBN 0715 35734 4 a b Belgian Aviation Preservation Association Retrieved 21 February 2017 a b Les moteurs Ava Les Ailes 938 16 19 November 1939 Liron J L 1984 Les avions Farman Paris Editions Larivere p 230 Retrieved from https en wikipedia org w index php title Ava 4A amp oldid 1154285513, wikipedia, wiki, book, books, library,
