Ava 4A

Last updated
Ava 4A
Type Flat-four, air-cooled two-stroke
National origin France
ManufacturerAva
Designer Marcel Violet

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.

Contents

Design and development

Marcel 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 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 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

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]

Applications

Survivors

A 4A-00 survives in a private collection and is sometimes exhibited on loan. [2]


Specifications (4A-00)

Data from Jane's All the World's Aircraft 1938, p.40d [1]

General characteristics

Components

Performance

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References

  1. 1 2 3 4 Grey, C.G. (1972). Jane's All the World's Aircraft 1938. London: David & Charles. p. 40d. ISBN   0715 35734 4.
  2. 1 2 "Belgian Aviation Preservation Association" . Retrieved 21 February 2017.
  3. 1 2 "Les moteurs Ava". Les Ailes (938): 16. 19 November 1939.
  4. Liron, J.L. (1984). Les avions Farman. Paris: Éditions Larivère. p. 230.