Sensitivity of the precision visual glidepath (P.V.G.) at long range
J. R. Baxter (Author), R. H. Day (Author), J. C. Lane (Author), Aeronautical Research Laboratories (Australia), Human Factors and Ergonomics Collection
"A series of tests were conducted to test the accuracy with which misalignments of the Precision Visual Glidepath (P.V.G.) display could be judged under a number of viewing conditions by both pilots and non-pilots. A full scale representation of the P.V.G. was observed from about 7 nautical miles in hazy conditions, and a number of additional tests were conducted in a 1/1000 scale laboratory simulator using some of the same observers. The initial tests in the laboratory served to validate the simulator and subsequent tests showed that the usability of the display was not significantly affected by the presence of a runway pattern. However a marked deterioration in viewing conditions produced a significant trend. The maximum deterioration was produced by a wet windscreen with windscreen wiper and a 50% reduction from the normal light intensity to simulate atmospheric attenuation."--Summary
Print Book, English, 1960
Department of Supply, Australian Defence Scientific Service, Aeronautical Research Laboratories, Melbourne, 1960