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  2. Gas spring - Wikipedia

    en.wikipedia.org/wiki/Gas_spring

    A gas spring consists of a sealed cylinder filled with a charge of high-pressure [5] gas, a piston rod attached to a piston with a sliding seal, and some oil. [1] The piston (or the cylinder wall) contains a number of channels that allow the gas to transfer between the lower chamber (between the piston and the closed end of the cylinder) and the upper chamber (between the piston and the head ...

  3. Hierarchy of hazard controls - Wikipedia

    en.wikipedia.org/wiki/Hierarchy_of_hazard_controls

    Hierarchy of hazard control is a system used in industry to prioritize possible interventions to minimize or eliminate exposure to hazards. [ a ] It is a widely accepted system promoted by numerous safety organizations.

  4. Strut - Wikipedia

    en.wikipedia.org/wiki/Strut

    Struts on the undercarriage, wings and tailplane of an Antonov An-2 biplane A strut is a structural component commonly found in engineering , aeronautics , architecture and anatomy . Struts generally work by resisting longitudinal compression , but they may also serve in tension.

  5. Pilot-operated relief valve - Wikipedia

    en.wikipedia.org/wiki/Pilot-operated_relief_valve

    The pressure at which the control pilot relieves is the functional set pressure of the PORV. When the pilot valve reaches set pressure it opens and releases the pressure from the dome. The piston is then free to open and the main valve exhausts the system fluid. The control pilot opens either to the main valve exhaust pipe or to atmosphere ...

  6. Positive pressure personnel suit - Wikipedia

    en.wikipedia.org/wiki/Positive_pressure...

    Racal suit — a positive pressure suit with a battery-operated blower for expeditionary use. Demilitarization Protective Ensemble (DPE) — a heat-sealed, one-time-use positive pressure personnel suit. Pressure suit — the pressurized garment worn by high-altitude pilots and astronauts. Hazmat suit — unpressurized protective garment.

  7. When red-hot isn't enough: New government heat risk ... - AOL

    www.aol.com/news/red-hot-isnt-enough-government...

    A new color-coded heat warning system relies on magenta to alert Americans to the most dangerous conditions they may see this summer. The National Weather Service and the Centers for Disease ...

  8. Extreme heat can be dangerous for kids. Here's how to keep ...

    www.aol.com/lifestyle/extreme-heat-pose...

    Summer 2023 saw record-breaking heat, and, according to the Centers of Disease Control and Prevention, 90% of the 120,000 heat-related emergency room visits in the United States last year took ...

  9. Shock absorber - Wikipedia

    en.wikipedia.org/wiki/Shock_absorber

    An automobile shock absorber contains spring-loaded check valves and orifices to control the flow of oil through an internal piston (see below). [1] One design consideration, when designing or choosing a shock absorber, is where that energy will go. In most shock absorbers, energy is converted to heat inside the viscous fluid.