IBA Itty Bitty
SIK Mylar Magic
LOO Solar Tetroon
Project Yeti 2003
Project Yeti 2004
Lift Calculations and Structural Loading in hot air balloons is poorly understood by balloon pilots generally.
Justin Smalley developed 3 papers in 1963. The second paper forms the basis of the 'natural' shape used by many balloon manufacturers.
The Modern Hot Air Balloon
The concept of using a propane burner was convieved in 1963 by Ed Yost.
The volume of an inflated spherical tetrahedron is not a trivial matter.
Copyright Steve Griffin 2009