Model Aircraft Honor

Arts & Crafts

Requirements

1. Assemble, from a kit, and successfully fly an airplane made of lightweight wood, tissue paper and rubber, or another gasoline-powered material.

   Answer: You need to assemble the model aircraft following the kit manual, using balsa wood, tissue paper, and a rubber band (or a gasoline engine), and demonstrate a complete flight with takeoff, sustained lift, and landing for the instructor. — The kit already comes with the parts cut and the assembly plan, so the challenge is to fit them together precisely and calibrate the center of gravity. Rubber-powered model aircraft work with a twisted rubber band spinning the propeller — a principle used since Pénaud's Planophore in 1871.

2. Assemble a glider from a kit, observe its flight characteristics and their relationship to the variable positions of the wings.

   Answer: Moving the wing alters the relationship between the center of gravity and the aerodynamic center, causing the glider to dive, stall, or glide smoothly. This principle was systematized by Otto Lilienthal between 1891 and 1896, in more than two thousand experimental flights with gliders.

3. Assemble and successfully fly two different styles of airplanes using sheets of paper between 20 and 35 centimeters in length and width.

   Answer: You should fold two paper airplanes in different styles (a fast dart and a slow glider, for example) with sheets of 20 to 35 cm, and successfully fly each model in front of the instructor to fulfill the requirement. — Each style explores a distinct aerodynamic idea: the dart concentrates weight at the front to cut through the air, while the glider has wide wings and a center of gravity set back to stay aloft longer. Paper airplanes obey the same principles of lift described by Daniel Bernoulli in 1738.

4. Define, locate, and explain the use of the following basic items:
   • Fuselage
   • Wing
   • Rudder
   • Horizontal stabilizer
   • Strut
   • Cockpit
   • Engine
   • Landing gear
   • Propeller

   Answer: 1) Fuselage: it is the central, elongated body of the model aircraft, to which the wing, tail assembly, engine, and landing gear are attached. Its function is to join and support all the parts, house the internal components, and give the aircraft its aerodynamic shape. 2) Wing: a flat, elongated structure attached to the sides of the fuselage. It is mainly responsible for generating the lift that keeps the model aircraft in the air, thanks to its aerodynamic profile. 3) Rudder: a movable vertical surface located on the tail (rear part), connected to the vertical stabilizer. It controls yaw, that is, the movement of the aircraft's nose to the left or right. 4) Horizontal stabilizer: a horizontal surface on the tail of the model aircraft. It ensures longitudinal balance (control of the up and down movement of the nose, called pitch) and gives stability to the flight. 5) Pushrod: a connecting rod or linkage that transmits the movement of the controls (servos) to the movable surfaces, such as the rudder and elevator. It is located internally, between the control and the part it actuates. 6) Cockpit: the cabin, located at the front/top of the fuselage, where the pilot would sit. In model aircraft it represents this region and helps with aesthetics and the visual reference for orienting the model. 7) Engine: it is usually at the front of the fuselage (or in a position defined by the design) and is the propulsion system; it provides the force that spins the propeller (combustion or electric engine). 8) Landing gear: a set of wheels (or skis/floats) on the underside of the fuselage and/or the wings. It supports the model aircraft on the ground and allows safe takeoff, taxiing, and landing. 9) Propeller: a rotating part fixed to the engine shaft, at the front of the model aircraft. It converts the engine's rotation into thrust, pushing the air backward and propelling the aircraft forward. — Each component performs a distinct aerodynamic function: the wing generates lift through a pressure difference, the rudder creates yaw, and the horizontal stabilizer prevents oscillation on the pitch axis. The standard configuration with fuselage, wing, rudder, and propeller was consolidated in the first decades of the 20th century, after the Wright Flyer flew in 1903.