Planes
Airplanes are fixed-wing aircraft designed to generate lift as air flows over their wings. Pilots balance thrust, lift, drag, and weight to climb, cruise, and land safely while using navigation systems, weather planning, and flight instruments to guide every trip.
Build Your Own Foam Glider Plane
- Choose a simple design - start with a high-wing glider shape because it is easier to balance and more stable in slow flight.
- Cut the main wing - use foam board to cut a straight wing panel; round the front edge slightly and keep both wing halves identical.
- Make the fuselage - cut a long center body section to hold the wing and tail; reinforce the nose with an extra foam layer for durability.
- Add tail surfaces - cut and glue a horizontal stabilizer and vertical fin at the back; keep them square to avoid turning bias.
- Create a slight wing dihedral - angle each wing tip up a little to help the glider self-correct and return to level flight.
- Balance the center of gravity - place a small amount of weight in the nose so the balance point sits around one third of the wing depth from the front.
- Trim test indoors - hand-launch gently and observe glide path; adjust tail angle by tiny bends to remove dives or stalls.
- Fly and tune outside - test in calm weather, make small trim changes, and record which setup gives the longest smooth glide.
How Airplanes Fly
- Lift - wings are shaped so air pressure is usually lower above and higher below, creating upward force.
- Thrust - propellers or jet engines push the aircraft forward through the air.
- Drag - air resistance pulls backward, so designers streamline shapes to reduce it.
- Weight - gravity pulls downward and must be balanced by lift for steady flight.
- Control surfaces - ailerons roll the plane, elevators pitch the nose, and the rudder yaws left or right.