, and fire retardant materials. Today new designs for propulsion is being created such as thrust vectoring. Thrust vectoring is the ability for a jet engine to change the direction of air changing the direction of flight without using the rudder. In conclusion, without thrust or an initial power source flight is not possible.Stability and ControlStability of an aircraft during flight is crucial. To understand stability one must imagine a three-space Cartesian coordinate system, or 3-D space. The aircraft must be controlled on its entire axis, x, y, and z. In order to keep a straight flight a rudder or vertical stabilizer must be added to the rear of the aircraft. For unhampered flight on the horizontal plane horizontal stabilizers must be added to the rear of the aircraft. Nothing needs to be added to nose of the aircraft due to the thrust of the engine. All stabilizers are important on an aircraft without one the aircraft would just spin out of control. This is seen often when a helicopter spins out of control when the tail fan loses power. In all cases the torque of the propeller would cause an induced spin and the outcome would be disaster. New designs in stabilizer technology have allowed for lightweight aircraft to be produced. Instead of having a horizontal stabilizer and a vertical stabilizer both is put together to give just two small stabilizers emanating from the fuselage at forty-five degree angles eliminating the need for three stabilizers. The pilot has the ability to control the aircrafts entire axis by two control devices called a pedal and a stick, or a specialized steering wheel. Making the stick one of the most important devices inside a cockpit.High Speed FlightMinimal speed flight and high-speed flight vary in several degrees. An important aspect of this variation is related to the speed of sound. The speed of sound or sound barrier is the speed of sound moving through a given space. The actual spe...
