An Ex Rocket Man's Take On It

I used Apollo data located from various on-line sources to determine an effective density ρ,  a “nose radius” value Rn ,  and a ballistic co...

Update 5-28-2026 :   I corrected an error in Figure 1.  "Belly" should have been "dorsal". ------    I have watched the ...

This study explores launch to low circular Earth orbit at low inclination.  It encompasses two different propellant combinations,  and 1-sho...

This author has tried several times to automate pencil-and-paper design analyses with spreadsheet software,  for the purpose of rough-sizing...

The following is the text of a column that I submitted to the Waco "Trib",  as a member of their board of contributors.  So far th...