Issue No.11 - November (1969 vol.18)
In the near future, vertical take-off and landing (VTOL) aircraft will be flying a wide envelope of complex trajectories in the terminal area to relieve airport congestion. The digital letdown computer automatically guides a VTOL aircraft along a preselected vertical profile to the terminal area.
Flaring curve, recursion formulae, special-purpose computer, terminal area, vertical take-off and landing aircraft.
B.E. Menn, "Digital Letdown Computer for Vertical Guidance", IEEE Transactions on Computers, vol.18, no. 11, pp. 1065-1068, November 1969, doi:10.1109/T-C.1969.222582