Next-Generation Utility Helicopter Outfitted With High-Tech Systems and Ingenious Design Attributes In the world of aviation, the evolution of utility helicopters has been noted by a continual drive in the direction of development and technical development. The current version of energy helicopters stands for a jump ahead in aeronautical design, https://juliustczzc.wikicommunications.com/4608741/a_consider_the_sikorsky_s_70_s_role_in_armed_forces_and_civil_aviation