What is the name for the curved or tapered front portion of a projectile?

The term used to describe the curved or tapered front portion of a projectile is known as the ogive. This design feature is crucial in aerodynamics because it helps to reduce drag as the projectile moves through the air, allowing for more stable flight and greater accuracy. The shape of the ogive can significantly influence the ballistic performance, affecting how the projectile interacts with the atmosphere during its trajectory.

In contrast, the tip generally refers to the very apex of the projectile but does not specifically denote the shape of that section, while the base pertains to the rear portion that provides stabilization during flight. The end is a more vague term that does not precisely describe the specific part of the projectile being discussed. Therefore, the definition and function of the ogive make it the correct answer to this question.