.:Prop & Jet:. Sukhoi Su-5 #boxart

Boxart by Eugeny Knupfer

The Sukhoi Su-5 or I-107 was a Soviet mixed-power (propeller and motorjet) prototype fighter aircraft built toward the end of World War II.[...]
The Su-5 (initially I-107) and the conceptually similar Mikoyan-Gurevich I-250 were designed in 1944. The aircraft first flew on 6 April 1945 and underwent limited flight testing. It was subsequently fitted with a laminar flow wing and attained 793 km/h (428 kn, 493 mph) at 4,350 m (14,270 ft) with the motorjet functioning. On 15 June 1945, the Klimov VK-107A piston engine was damaged beyond repair in flight. Following acquisition of another VK-107A, flight testing continued until 18 October when the engine reached the end of its service life. No further VK-107As could be procured and the project was canceled. /wikipedia..the free etc. etc./

And photo courtesy of Prop & Jet:

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