Aeronautical Engineer & Pilot
The next configuration of the 4 engines was more what we are used to: 4 "puller' propellors,
2 on the top of the bottom wing on each side. This aircraft was parked at an airshow, when
the engine of another airplane came off in flight (!) and crashed into the Russky Vityaz.
Sikorsky junked the wreckage, as he already was at work on the S-22, the "Il'ya Muromets",
which became the prototype for Russia's World War I fleet of 80 4-engined bombers.