Mel's Challenge
windriver
Not the Armstrong Whitworth Awana although it did had the same engines as the challenge aircraft but she was a very much larger aircraft, in fact the Awana was larger than the Blackburn Kangaroo and the Handley Page W8. The Awana also flew 4 years after the challenge aircraft.
To recap the challenge aircraft was a British aircraft built late 1910s but not built by:-
Armstrong Whitworth
Beardmore
Blackburn
Bristol
de Havilland
Handley Page
or Tarrant
She was a twin engined aircraft but did not go into production.
Mel