flightgear new shepard dev. 2019-06-17 18:12 http://www.maschinenbau-wissen.de/skript3/mechanik/kinetik/295-haupttraegheitsmoment aerodynamics: https://www.nakka-rocketry.net/softw.html#Aerolab https://www.grc.nasa.gov/WWW/K-12/rocket/rktcp.html https://www.nakka-rocketry.net/articles/altcalc.pdf https://www.grc.nasa.gov/WWW/k-12/rocket/presar.html
