Google translate says:
We present an unusual version of the British fighter Hawker Hurricane, developed by Hillson company and called FH.40. The proposed model turned the monoplane fighter in a biplane, with the addition of an upper wing in order to improve landing and takeoff operations on semi-prepared runways and expand the scope for long-haul flights, as the upper wing also served as the fuel tank. Once used fuel, the upper wing could be ejected through the plane to its original configuration, or as a biplane took off and at the end of its mission rested as a monoplane. The first flights were conducted in spring 1941, and July 16, 1941 made the first successful launch of the higher plane. However the project was not accepted by the UK Department of War and was abandoned.