Why subscribe?

Subscribe to get full access to the newsletter and publication archives.

Stay up-to-date

Never miss an update—every new post is sent directly to your email inbox. For a spam-free, ad-free reading experience, plus audio and community features, get the Substack app.

Join the crew

Be part of a community of people who share your interests. Participate in the comments section, or support this work with a subscription.

To learn more about the tech platform that powers this publication, visit Substack.com.

User's avatar

Subscribe to Geoffrey P. Cruickshank

Energy and security professional, interested in propulsion systems (gas turbines, power generation, MethaLox rocket engines, Tic-Tacs that can produce 1100 GW of power in 0.78 seconds...) Based in Darwin, Northern Territory, Australia

People