Speed control system employed on swing-away ramp to prevent collision with airplane is described; two pumps, with 3- and 12-gpm capacities supply hydraulic system which positions this boarding ramp; solenoid-operated, 4-way valve combines both deliveries for fast approach and removal; two pairs of hydraulic cylinders swing and lift ramp into position; ramp is raised and lowered by other pair; center guide stabilizes vertical movement.


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    Title :

    Two-speed system positions airplane boarding ramp


    Additional title:

    Hydraulics Pneumatics


    Contributors:
    Green, D. (author) / Wolland, G. (author)

    Published in:

    Publication date :

    1965


    Size :

    2 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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