There are four forces of flight that affect the Delta Dart model: lift, thrust, drag, and gravity. Lift is going to be created by the wings, which pulls the model up into the air. Thrust is generated by the propeller which pulls the model forward through the air. Gravity is reduced by the lightweight design of the wood and paper of the model. This means that there is more lift than gravity, which will keep the plane up. Drag is reduced by the way the plane is designed. This means there is more thrust than drag, which will keep the plane moving forward through the air. Bernoulli’s Principle says that if the speed of the air gets faster, pressure is reduced. Since air on top of an airplane’s wing goes faster on the top due to the curvature