3/5 He calculated “pressure altitude” vs. gas purity. Today’s stratospheric airships use the same math for day/night buoyancy control.
✈️📜 Designing the skies, one girder at a time. Airship Design Burgess.pdf
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. 3/5 He calculated “pressure altitude” vs
5/5 If you’re into #AirshipDesign, this PDF is a time capsule of first principles. No CFD, no composites – just solid engineering judgment. ✈️📜 Designing the skies, one girder at a time
📥 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.
1/5 Burgess designed airships before finite elements. His hand-drawn load diagrams for ring frames are art + physics .
Why revisit it? Because companies like LTA Research and Hybrid Air Vehicles are rediscovering these principles—with modern materials.