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  2. Fire-resistance rating - Wikipedia

    en.wikipedia.org/wiki/Fire-resistance_rating

    This rating is the requirement in data safes and vault structures for protecting digital information on magnetic media or hard drives. Temperatures inside the protected chamber must be held below 125 °F (52 °C) for the time period specified, such as Class 125-2 Hour, with temperatures up to 2,000 °F (1,090 °C) outside the vault.

  3. Air Tractor AT-802 - Wikipedia

    en.wikipedia.org/wiki/Air_Tractor_AT-802

    AT-802U prototype at Paris Air Show. In response to the United States Air Force's LAAR program and the growing requirement for light counter-insurgency aircraft, [5] Air Tractor developed an armed model, the AT-802U, in 2008, with engine and cockpit armor, a bulletproof windscreen, self-sealing fuel tanks, and structural reinforcements for the carriage of 9,000 pounds (4,100 kg) of payload.

  4. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/.../1951_USAF_resolution_test_chart

    A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.

  5. Combustibility and flammability - Wikipedia

    en.wikipedia.org/wiki/Combustibility_and...

    These codes specify the combustibility rating for materials, the entrance and exit requirements, as well as active fire protection requirements, along with numerous other things. In the U.S. other agencies have also developed building codes that specify combustibility ratings such as state and/or county governing bodies.

  6. Inside the mile-long factory line where America's F-35 ... - AOL

    www.aol.com/news/inside-mile-long-factory-line...

    Inside the mile-long factory line where America's F-35 stealth fighter jets are made. Jake Epstein. Updated February 19, 2025 at 4:03 AM. Three US Air Force F-35 Lightning II Joint Strike Fighters.

  7. NFPA 704 - Wikipedia

    en.wikipedia.org/wiki/NFPA_704

    NFPA 704 safety squares on containers of ethyl alcohol and acetone. "NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response" is a standard maintained by the U.S.-based National Fire Protection Association.

  8. Flammability diagram - Wikipedia

    en.wikipedia.org/wiki/Flammability_diagram

    Flammability diagram for methane. Flammability diagrams show the control of flammability in mixtures of fuel, oxygen and an inert gas, typically nitrogen.Mixtures of the three gasses are usually depicted in a triangular diagram, known as a ternary plot.

  9. File:Advanced Imaging Technology (AIT) Fact Sheet.pdf

    en.wikipedia.org/wiki/File:Advanced_Imaging...

    Short title: Microsoft Word - AIT Fact Sheet_6 15 10_v2.doc; Author: haley.wright: Date and time of digitizing: 07:45, 16 June 2010: Software used: PScript5.dll Version 5.2.2