2019 Spring Semester Flying Robot Project Team E Article 1April 24, 2019


In today’s class, we were grouped into teams and each team decided the concept of the aircraft. Our team is composed of graduate students.
 We decided to make flying wing aircraft with a rectangular wing. Then, we decided aircraft’s configuration, size and arrangement of flight control surfaces. In the process, we referred to Prandtl-D, which is flying wing made by NASA( Prandtl-D’s wing span is 25 feet and it is 28 pounds weight. It has neither vertical tail nor horizontal tail and it has longitudinal stability because of twist-down near the wing tip. Prandtl-D’s lift distribution is bell shaped rather than the traditional elliptical shape, which leads to more efficient flight. We can incorporate Prandtl-D’s shape into our aircraft design.
 After we draw the sketch, we tried making simple model with cardboard and chopsticks.
The first model we made didn’t have enough stiffness of wing, so we added one more cardboard to original wing, only to lose stability because of too backward center of gravity. Finally, we could make the plane stable by adding some weight to the tip of the chopsticks.
 The next thing we have to do is detailed designing. We’ll estimate its aerodynamic performance, make the three-view drawing of structure using xflr5 and submit it to our TA by May 8.
 We have to consider many constraints, that is, stiffness of wing, stability, trim and how we make it lighter. We’ll do our best to make Flying wing aircraft with rectangular wing.