Landing gear types are essential components of an aircraft, designed to support the weight of the plane during takeoff, landing, and ground operations. The most common types include tricycle gear, which features a nose wheel and two main wheels, providing stability and ease of handling. Another type is tailwheel gear, which has two main wheels at the front and a smaller wheel at the tail, often used in vintage aircraft. Another variation is skid landing gear, commonly found on helicopters and some military aircraft, which uses skids instead of wheels. Each landing gear type is chosen based on the aircraft's design, intended use, and operational environment, ensuring safe landings and takeoffs.