3/5 He calculated “pressure altitude” vs. gas purity. Today’s stratospheric airships use the same math for day/night buoyancy control.
In the mid-1920s, as rigid airships captured the world’s imagination, Charles P. Burgess—a key figure at the U.S. Navy’s Bureau of Aeronautics and later NACA—published a seminal work simply titled Airship Design . If you’ve come across a PDF bearing his name, you’ve found a masterclass in pre-Zeppelin structural logic. Airship Design Burgess.pdf
Since I don’t have access to the specific PDF you’re referencing, I’ve developed a based on the typical contents of Burgess’s known airship design work (e.g., NACA Report No. 225, "Airship Design" by C.P. Burgess, 1925). If your PDF is different, you can adapt the details. 3/5 He calculated “pressure altitude” vs
This is a page from Charles P. Burgess’s 1925 “Airship Design” (NACA Report No. 225). Before supercomputers and carbon fiber, Burgess laid out the rules for rigid airships using slide rules and wind tunnel scraps. In the mid-1920s, as rigid airships captured the
📥 Link to PDF (if available) or search “NACA Report 225” Image suggestion: A scanned diagram from Burgess’s report (e.g., ring frame or longitudinal girder detail) + a modern hybrid airship photo.