DEFINITION OF ALL WEATHER LANDING SYSTEM REQUIREMENTS FOR CATEGORY III OPERATION IN CORVAIR 880 N 112.
LEAR SIEGLER INC SANTA MONICA CALIF ASTRONICS DIV
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Studies were made to define an All-Weather Landing System AWLS to be used to establish requirements for operation in Category III weather minimums. Initially a limited Category II system will be installed with automatic VFR touchdown capability which can later be expanded into a Category III system with minimum modification to the equipment and aircraft. To install the Category III system with minimum modifications, the autopilot currently installed in the aircraft will be removed and an AWLS installed providing not only the automatic landing capability but also the normal autopilot curise modes. The recommended system is a dual system with dual actuators and control wheels with associated force sensors. The system allows single channel operation or dual channel operation with comparators to provide warning to the pilot or disconnect of the system in the event of a failure. The force wheel installed in both the pilot and copilot positions permits evaluation of split crew duties as well as split axis control. A control augmentation mode is provided for use during manual approaches with flight director steering information. Author
- Flight Control and Instrumentation