The glider
A 1922 NASA technical report record for a glider study, its pictures drawn as engineering documents rather than art. The first page shows an aerofoil section with a polar diagram of lift and drag coefficients, the second gives scaled construction drawings of a Hanover Technical High School glider with dimensions in millimetres, and the third is a plan map of soaring sites with flight routes and hill ridges. A designer could take the clean line-drawing conventions of dimensioned plans, graphs and terrain maps for technical diagram work.
