What is the primary function of the empennage?

The primary function of the empennage is to provide stability and control to the aircraft. The empennage consists of several components, including the horizontal stabilizer and vertical stabilizer, which work together to maintain an aircraft's equilibrium in flight. It helps to ensure that the aircraft remains stable during various phases of flight, including takeoff, cruising, and landing.

The horizontal stabilizer prevents unwanted pitch movements, while the vertical stabilizer prevents yawing motion, effectively keeping the aircraft on its intended flight path. Additionally, control surfaces such as the elevators and rudder, which are part of the empennage, allow the pilot to maneuver the aircraft by controlling pitch and yaw, respectively. This stability is crucial for the safe operation of the aircraft, making the empennage an essential component in the overall design and functionality of flight.

In contrast, the other options do not relate to the empennage's primary purpose. Storing fuel, housing engines, and managing cabin pressure are functions associated with other parts of the aircraft and do not pertain to the empennage's role in stability and control.