Avia B-634

Avia · Czechoslovakia · first flew 1936 · fighter

The Avia B-634 was a Czechoslovak single-seat biplane fighter developed in the mid-1930s, representing the final refinement of Avia's biplane fighter lineage before the transition to monoplane designs.

Recognition (WEFT)

W — Wings	High-mounted, tapered
E — Engines	1 × piston, nose-mounted
F — Fuselage	6.82 m fuselage
T — Tail	Conventional

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Single-seat Czechoslovak biplane fighter of the mid-1930s
Radial engine with long-chord NACA cowling
Fixed spatted undercarriage and open cockpit

Biplane with a moderately tapered wing, NACA-cowled radial engine, spatted fixed undercarriage, and open cockpit; similar in configuration to contemporary Polish and Soviet biplane fighters.

Specifications

The Avia B-634 has a length of 6.82 m (22 ft).
It has a wingspan of 10 m (33 ft).
Its maximum speed is 405 km/h (252 mph).
Typical crew: 1.

Figures are for the representative variant described above; marks differ. See how AircraftIQ sources figures.

History

The B-634 was a refined development of the earlier Avia B.34 series, offering improved performance through a more powerful radial engine and aerodynamic refinements. It was evaluated by the Czechoslovak Air Force but was not adopted in large numbers, as the service was transitioning to monoplane fighters. The aircraft was also offered for export but found few buyers.

Variants

The B-634 was an evolution of the B.34 series; no significant sub-variants of the B-634 itself are documented.

Where you'll see it

Operated in limited numbers by the Czechoslovak Air Force in the late 1930s; any survivors were absorbed into German service after the 1939 occupation.

Related aircraft

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