This paper presents a "realistic model of atmospheric properties based on reliable observations and current theories" according to the abstract found on page xv. This 1956 ARDC model was meant to be used as the "basis for engineering and design work performed."
The introduction notes, "The Saturn V launch vehicle is being developed by the National Aeronautics and Space Administration's George C. Marshall Space Flight Center for Project Apollo; Saturn I and Saturn IB vehicles are providing the early testing and support for Project Apollo. The nerve center of the Saturn is its guidance and control system. An airborne digital computer provides the link which closes both the guidance and control loops,making verification of the flight computer program of vital importance. During a powered flight this onboard digital computer program can be divided into four major parts:a) guidance, including navigation, b) control, c) vehicle sequencing, and d) computer telemetry."
Compares happy individuals who received their gifts on time to sad people who did not, this image serves as a reminder to send presents early so they arrive on time.
