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  2. Wheelchair cushion - Wikipedia

    en.wikipedia.org/wiki/Wheelchair_cushion

    Wheelchair cushions are cushions specifically designed to provide comfort and protection against injury for wheelchair users. They also aid in properly positioning the user in the correct posture. Wheelchair users are at great risk for pressure sores. [1] A number of factors are included in the formation of these ulcers including:

  3. RoughRider wheelchair - Wikipedia

    en.wikipedia.org/wiki/RoughRider_wheelchair

    The design of the RoughRider originally was open-source and has been revised with input from wheelchair users in over 40 countries since 1980. [2] The RoughRider was created to fill the demand for a reliable wheelchair for over 20 million disabled people in the developing world who need a wheelchair and do not have one. [3]

  4. Impact attenuator - Wikipedia

    en.wikipedia.org/wiki/Impact_attenuator

    A crash cushion installed on a motorway exit in Italy. An impact attenuator, also known as a crash cushion, crash attenuator, or cowboy cushion, is a device intended to reduce the damage to structures, vehicles, and motorists resulting from a motor vehicle collision. Impact attenuators are designed to absorb the colliding vehicle's kinetic energy.

  5. Air Cushion Restraint System - Wikipedia

    en.wikipedia.org/wiki/Air_Cushion_Restraint_System

    The Air Cushion Restraint System (ACRS) was developed by General Motors in the early 1970s, and consisted of both a driver's and passenger's side air bag, ...

  6. Thrust vectoring - Wikipedia

    en.wikipedia.org/wiki/Thrust_vectoring

    A multi-axis thrust vectoring engine nozzle in motion. Thrust vectoring, also known as thrust vector control (TVC), is the ability of an aircraft, rocket or other vehicle to manipulate the direction of the thrust from its engine(s) or motor(s) to control the attitude or angular velocity of the vehicle.

  7. Thrust bearing - Wikipedia

    en.wikipedia.org/wiki/Thrust_bearing

    Miba fluid film thrust bearing. Magnetic bearings, where the axial thrust is supported on a magnetic field. This is used where very high speeds or very low drag is needed, for example the Zippe-type centrifuge. Thrust bearings are commonly used in automotive, marine, [3] and aerospace applications. They are also used in the main and tail rotor ...

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