The Gas Turbine: The Final Revelation in Humanity’s Pantheon of Prime Movers (w/ David Helmer)

About this episode

David Helmer discusses the development and challenges of gas turbine technology and its implications in aviation and power generation.

David Helmer spent years working on cooling systems for GE jet turbines before moving to Boston Consulting Group, the Applied Physics Laboratory, and West Point. He joins Decouple to explain why the gas turbine, despite being conceptually understood for centuries, only became buildable in the crucible of the Second World War, and why mastering it remains beyond the reach of all but a handful of institutions on earth.The conversation covers the materials science at the heart of the technology, where turbine blades operate above their own melting point and components in continuous distress are kept flying for hundreds of additional cycles before refurbishment. We examine why innovation cycles in aviation are measured in decades rather than years, drawing direct comparisons to nuclear's certification constraints and contrasting both with the faster but higher-risk iteration model of the rocket sector. The discussion moves from aviation into power generation, tracing the combined cycle plant's efficiency gains, the AI-driven demand surge now stretching turbine order books to 7 years, and what the scramble to convert end-of-life commercial jet engines for data center power reveals…

People in this episode

Host: Dr. Chris Keefer

Guest: David Helmer

Topics covered

• gas turbine technology
• aviation innovation cycles
• power generation
• materials science
• geopolitics
• supply chain limits

Keywords

• gas turbine
• aviation
• power generation
• materials science
• innovation cycles
• geopolitics
• supply chain

Mentioned in this episode

Organizations: GE, Boston Consulting Group, Applied Physics Laboratory, West Point, Russia

More episodes of Decouple

• Limits to Growth of LLMs w/ David Helmer · June 4, 2026 · 1h 32m
• Understanding the World's Most Unusual Commodity Cycle · April 30, 2026 · 1h 19m
• The Absolute Best Water Reactor: What Happened to the World’s Fastest Constructed Reactor? · April 23, 2026 · 1h 9m
• Nuclear Reprocessing: Promise vs Reality · April 9, 2026 · 1h 42m
• Greenwashing with Chinese Characteristics · April 2, 2026 · 1h 7m
• The Luxury Beliefs That Broke Europe’s Energy System | Doomberg · March 24, 2026 · 1h 17m