411A From United States of America, joined Nov 2001, 1826 posts, RR: 9 Reply 3, posted (3 years 10 months 3 weeks 5 days 16 hours ago) and read 1275 times:
The deHavilland Comet and SUD Caravelle designs, although looking very similar at the pointy end, were entirely different, from a systems perspective.
The Caravelle design was very advanced for its time, fully hydraulic powered flight controls, and many redundant systems.
Also, the Caravelle was the first jet transport airplane to perform CATIIIB autolands, using a Lear designed duplex autopilot system.
This design was used (as I recall) by the French Post Office for air mail, however, not for passenger ops.
Passenger ops required a triplex autoflight system, such as the one designed by Smiths and installed on the HS.121 Trident.