Preliminary assessment of ``System 21`` outrigger design integrity; Final report

Technical Report · Thu Nov 30 04:00:00 EST 1989

OSTI ID:720706

Ahlbeck, D R ^[1]

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1. Battelle Columbus Div., OH (USA)

System 21 (originally called Project 21) is an innovative transit design that utilizes a single triangular guideway beam to support cars traveling in both directions on opposite sides of the guideway. This configuration has distinct advantages in urban space savings, reduced guideway costs, and compact station layouts. The System 21 car is supported at each end on a single-wheel ``truck``, and by an upper suspension and ``outrigger`` with four pairs of rollers. The outrigger therefore carries a tension load preventing the car from overturning, while the truck wheel carries the car weight and moment-induced compressive loading. The structural integrity of the outrigger is a key to the operating safety of the System 21 vehicle. It was the purpose, therefore, of this preliminary analysis to assess the integrity of the outrigger design, based on the current level of design detail, and to define those specific areas of the design that will require a more detailed analysis and qualification testing. 15 figs., 3 tabs.

• Research Organization: Battelle Columbus Div., OH (United States); Transit Innovations, Falls Church, VA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FG01-89CE15439
• OSTI ID: 720706
• Report Number(s): DOE/CE/15439--T6; ON: TI90021202
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
99 GENERAL AND MISCELLANEOUS
ACCELERATION
COMPUTERIZED SIMULATION
DAMPING
DESIGN
DYNAMICS
ENGINEERED SAFETY SYSTEMS
EVALUATION
FLEXIBILITY
GEOMETRY
MASS TRANSIT SYSTEMS
OSCILLATIONS
PERFORMANCE TESTING
PROGRESS REPORT
RAILWAYS
RESPONSE FUNCTIONS
SPECIFICATIONS
STABILITY
STRESSES
STRUCTURAL MODELS
VARIATIONS
VELOCITY