Validation of `System 21´ monobeam transit with computer analysis and large models

Validation of four key features of the System 21 aerial rapid transit system is discussed. These are (1) assessment of tension tie between car and beam; (2) dynamic analysis of cars/trains traveling along the guideway at speeds to 100 mph; (3) analyses of guideway beam strength and rigidity; and (4) quarter-scale models to validate outrigger kinematics and modular makeup of the guideway and station. The analyses show that the system designs are valid for beam spans to 80 ft and speeds to 60 mph, with spans of 90 ft and speeds of 125 mph attainable if certain more stringent constraints are met. There are strong indications of suitability for operation at inter-city speeds as well