Aircraft Vehicle

Development of an effective set of flight controls was a critical advance in the development of aircraft. Early efforts at fixed-wing aircraft design succeeded in generating sufficient lift to get the aircraft off the ground, but once aloft, the aircraft proved uncontrollable, often with disastrous results. The development of effective flight controls is what allowed stable flight.
• Empennage
Empennage ( /ˌɑːmpɪˈnɑːʒ/ or /ˈɛmpɪnɪdʒ/) is an aviation term used to describe the tail section of an aircraft. The empennage is also known as the tail or tail assembly; all three terms may be used interchangeably.
The empennage gives stability to the aircraft and controls the flight dynamics of pitch and yaw.