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Issue No. 11 - November (1969 vol. 18)
ISSN: 0018-9340
pp: 1065-1068
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. Menn, "Digital Letdown Computer for Vertical Guidance," in IEEE Transactions on Computers, vol. 18, no. , pp. 1065-1068, 1969.
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