Air freight is handled today by aircraft whose performance
is designed for passenger service. Speed increase has led
to nonstop flights at high altitudes, thus requiring a fuel
load greater than the actual payload. For freight, however
aircraft flying at 200 knots would be perfectly suitable.
They could fly at low altitudes, stop on the way and carry
a payload much greater that fuel capacity. To be economical,
such aircraft must be large (1,000 tons or more), and aircushion
landing will become a necessity. Numerous tests
conducted on the Bertin air-cushion for air drops have been
quite encouraging. Transfer of this technique to aircraft
landing does not create particularly difficult problems.