Optics that Fit

Robert R. Shannon, James P. Mills, Harvey M. Pollicove, Patrick A. Trotta and L.N. Durvasula

The optical dome conventionally used on the front end of a missile is a section of a sphere, because spherical optical design and fabrication are well-understood. Such blunt forms, however, produce considerable aerodynamic drag.

Replacing a spherical front end with a more aerodynamically efficient form, such as an ellipsoid, significantly increases speed or range for a given amount of propulsion energy expended...