Inside Out Library · Explore
The drift of an aircraft guided towards it's destination by directional receiving of radio signals transmitted from the ground (1925)
NASA Technical Reports Server (NTRS) · leaf 6
N.A.C.A. Technical Note No.220 Figs.l&2.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
More pictures from The drift of an aircraft guided towards it's destination by directional receiving of radio signals transmitted from the ground
More like this