How did Aegidus Elling’s gas-turbine experiments advance turbine engineering?

Aegidus Elling of Norway made a foundational contribution to turbine engineering by building the first successful experimental gas turbine that utilized both rotary compressors and turbines in 1903.1

His work advanced the field by demonstrating the practical feasibility of a steady-flow engine. In his design, air from a centrifugal compressor was directed through a combustion chamber and cooled via steam injection to manage the turbine-inlet temperature, which was limited by the materials available at the time.1

Elling’s ongoing experiments led to significant technical improvements; by 1932, his turbine achieved a compressor efficiency of 71 percent and a turbine efficiency of 82 percent while operating at an inlet temperature of 550° C. Although his work did not lead to immediate commercial success, his development of these high-efficiency rotating components provided a critical proof of concept for the modern gas-turbine engine.1