sesquiplane Directory References Discover 10 Failed Doomsday Predictions How Did the Sperm Whale Get Its Name? 10 Best Hockey Players of All Time Timeline of the Space Race, 1957–69 New Seven Wonders of the World Roman Catholic Saints The Seven Sacraments of the Roman Catholic church Contents sesquiplane airplane Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:biplanes In biplane…the lower) is called a sesquiplane. A few triplane designs proved successful during World War I; powered aircraft with four or more main lifting surfaces have never been more than curiosities.Read More
