SIKORSKY’S FIRST SUCCESS: The Russky Vityaz (Russian Knight) was the world’s first four-engine aircraft. It was designed and built by Igor Sikorsky, then working in the Russian Empire. It is hard to imagine this airplane, which looks like a flying ticket-booth, gliding through the air, but the airplane only flew at 56 miles per hour... Image: Scientific American, October 11, 1913