sesquiplane Directory References Discover Why Do Some Cicadas Appear Only Every 17 Years? Spies Like Us: 10 Famous Names in the Espionage Game 7 Drugs that Changed the World Who Invented the Internet? Is Cinco de Mayo Mexico's Independence Day? Water Fluoridation: Just the Facts 9 of the World’s Deadliest Snakes 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
