Triplane) 齊柏林-斯塔肯 R.VI(英语:Zeppelin-Staaken R.VI) 齊柏林-斯塔肯 R.XIV(英语:Zeppelin-Staaken R.XIV) AEG R.I 亨利佩奇 V/1500型(英语:Handley Page V/1500) Sikorsky used the French
University of Rhode Island. Retrieved: July 17, 2010. Delear, Frank J. Igor Sikorsky: His Three Careers in Aviation. New York: Dodd Mead, 1969, Revised edition