4 
AERONAUTICAL CHART RESEARCH AND DEVELOPMENT 
Fig. 6 
12 inch, 24 inch, 36 inch, 48 inch, etc. Attitude of the camera may be vertical or 
almost any angle of obliquity. Reconnaissance photography, as contrasted to 
mapping prints, is nearly always lacking in precision features, such as exact 
focal length, positioning of fiducial marks, adequate flight data, etc. 
Enough of the scope and problems confronting the AF charting organiza 
tions! What are a few typical current projects now underway? Perhaps the most 
interesting unclassified projects are those of (a) obtaining the exact position of 
the aircraft in space at the time when the shutter clicks, and (b) directing the 
photographic aircraft on straight and parallel flight lines. 
Flights will be underway soon to test the practicability of the radio altimeter