Four engine airplane
In 1913, the first four-engine airplane was first built and flown by Igor Sikorsky of Russia. In 1910, Sikorsky was involved in a plane crash in a single engine plane when the motor died. This convinced him that there needed to be more than one engine in case of failure. The Bolshoi Baltisky was built with four engines and Sikorsky flew it successfully on May 13, 1913. In recognition of his accomplishment, he was awarded an honorary degree in engineering by the Saint Petersburg Polytechnical Institute.
Books in our collection
Igor Sikorsky, the Russian years by K.N. Finne, Carl Bobrow, Von Hardesty
The aviation careers of Igor Sikorsky by Dorothy Cochrane, Von Hardesty, Russell Lee, National Air and Space Museum