Voychenko ViS-18

The Voychenko ViS-18 "Bierkut" (: Беркут, English: Bierkut) is a stealth, single-seat,   being developed by the Voychenko and Sobchak Design Bureau since 2002 for air superiority and attack operations, produced by the Gorbatov Aviation Complex. Developed as an answer to the increased use of stealth aircraft by militaries throughout Atlas. It is a product of a ViS program to develop technologies for a next-generation fighter aircraft able to surpass existing fifth-gen fighters, such as the Stasnovan VeK-44, Granzerian V-12, and Vazandian.

The fighter is designed to have, , , and advanced avionics to overcome the and even other fifth-generation fighter aircraft as well as ground and naval defences. The ViS-18 is intended to succeed the, , and VeK-44 in the Proletarian Liberation Air Force.

The prototypes and initial production batch are to be delivered with a highly upgraded variant of the Stasnovan, Sobchak AL-50M2, as an interim powerplant while an advanced clean-sheet design engine, currently designated the Sobchak S-50, is in final stages of development and expected to be available after mid-2020s. The aircraft is expected to have a service life of up to 35 years.