-3
Iskra-3 is a Soviet-designed gas turbine aircraft engine developed in the 1950s. It is a single-shaft engine with a two-spool compressor, two combustion chambers, two turbine sections, and a single-stage axial-flow turbine. The Iskra-3 is capable of delivering up to 3,000 shaft horse power (SHP) and is one of the most widely-used Russian engines, powering such aircraft as the Antonov An-2, Antonov An-26, and the Yakovlev Yak-40. The 30.046.951 part of the Iskra-3 engine is the compressor rotor assembly, which is responsible for compressing air and preparing it for combustion. This particular part is forged from a nickel-based super alloy and is designed to be resistant to wear and tear. The assembly is made up of three concentric discs that are connected together securely with a fine-threaded locking ring. Each disc itself is precision manufactured using CNC machining, and is outfitted with blades that direct the air into the combustion chamber.