Hawker Audax export models
The Audax was the army co-operation version of the Hart family, probably Britain's most successful military aircraft of the inter-war years.
The Audax was a minimal change to the basic Hart, with the addition of a hook system to allow retreival of ground-air messages being the most obvious. All aircraft built for the RAF and Empire air forces were almost indistinguishable from standard Harts fitted with Kestrel engines.
Export versions of the Audax were also built for Middle Eastern customers, and although still labelled as Audaxes, were all significantly different from the RAF model. All export Audaxes were fitted with varying models of radial engines, and were all also fitted with the larger, rounder Osprey tails, rather than the more sharkfin Hart tails.
In 1933 Persia ordered 56 aircraft, as the Persian Audax. These aircraft formed the core of the Imperial Iranian Air Force, and saw action against the RAF during the Anglo-Soviet invasion of Iran in 1941.
Iraq ordered 34 of the Iraqi Audax and these were delivered by 1936. These also found themselves in combat against the RAF in 1941, during the Anglo-Iraqi war.
The final customer was Egypt, who received 24 Egyptian Audaxes by 1938. The Egyptian Audaxes spent a more relaxed life, and did not see combat against Britain, and being retired before 1948.
I have just left the high care ward in hospital, but am still shaky of hand and fuzzy of mind. I've still got hundreds of drawings and backstories to post, but my output will be rather slow for quite a while.