system
Given the following post, respond as if you're commenting on Reddit:
human
Why do commercial jets have rounded noses?

Fighter jets have a more pointed nose but for some reason commercial jets do not.  Why?
gpt
Commercial jets fly at subsonic speeds and at those speeds a spherical leading edge (i.e., rounded nose) has the least drag of any shape.  At supersonic speeds the shock wave created by the aircraft becomes a bigger factor in drag than the aerodynamic drag.  The shock wave will begin at the forward most point of the aircraft traveling faster than sound (i.e., at the nose) and forms a cone aft.  The angle of the cone decreases as the speed of the aircraft increases.  If an aircraft component gets outside of the cone formed by the nose, it will create it's own shock wave and drastically increase the drag on the aircraft.  By having a sharp pointed nose, a fighter jet is designed to keep the entire aircraft behind the shock wave.