Final answer:
Nose gear extension during alternate gear extension can be assisted by gravity, airflow, and manual or mechanical systems that enable the gear to extend and lock into place for landing.
Step-by-step explanation:
During alternate gear extension, the nose gear extension is typically assisted by a combination of gravity, airflow, and in some instances, a mechanical or manual release mechanism that allows the gear to free-fall to the extended position. In an aircraft, the normal gear extension system is usually hydraulic or electric. When the normal systems fail, pilots resort to an alternate method, often manually initiated, to ensure the landing gear is extended before landing. Depending on the aircraft design, there could be a dedicated handle, cable or a lever that, when operated, releases the uplocks and allows the gear to extend. The actual process of the nose gear extending can be aided by the force of gravity, the relative wind (airflow during flight), and spring-loaded mechanisms or bungee systems that help the gear to lock into place once deployed.