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2. Emergency oxygen system - Wikipedia

   en.wikipedia.org/wiki/Emergency_oxygen_system

   Most commercial aircraft that operate at high flight altitudes are pressurized at a maximum cabin altitude of approximately 8,000 feet. On most pressurized aircraft, if cabin pressurization is lost when the aircraft is flying at an altitude above 4,267 m (14,000 feet), compartments containing the oxygen masks will open automatically, either above or in front of the passenger and crew seats ...

3. Cabin pressurization - Wikipedia

   en.wikipedia.org/wiki/Cabin_pressurization

   At 40,000 ft (12,192 m), the ambient air pressure falls to about 0.2 bar, at which maintaining a minimum partial pressure of oxygen of 0.2 bar requires breathing 100% oxygen using an oxygen mask. Emergency oxygen supply masks in the passenger compartment of airliners do not need to be pressure-demand masks because most flights stay below 40,000 ...

4. Ground support equipment - Wikipedia

   en.wikipedia.org/wiki/Ground_support_equipment

   There are three primary types of these devices that exist currently: a stored air cart, a gas turbine based unit, and a diesel engine driven screw compressor unit. All three devices create a source of low pressure, high volume air to start the aircraft engines. Typically one or two hoses are connected to these units, with the largest aircraft ...

5. Compressed-air vehicle - Wikipedia

   en.wikipedia.org/wiki/Compressed-air_vehicle

   The tanks must be designed to safety standards appropriate for a pressure vessel, such as ISO 11439. [6]The pressure vessels or air storage tanks that can be used in compressed-air vehicles can be made for low pressure (9 atm (130 psi)) or high (more than 240 atm (3,500 psi)), and can be made of composite materials like thermoplastic and fiber-reinforced thermoplastics, [7] [8] that means that ...

6. Cessna Citation X - Wikipedia

   en.wikipedia.org/wiki/Cessna_Citation_X

   The Cessna 750 Citation X [a] is an American mid-size business jet produced by Cessna; it is part of the Citation family.Announced at the October 1990 NBAA convention, the Model 750 made its maiden flight on December 21, 1993, received its type certification on June 3, 1996, and was first delivered in July 1996.

7. Lockheed XC-35 - Wikipedia

   en.wikipedia.org/wiki/Lockheed_XC-35

   The fuselage was divided into two compartments, a forward pressurized compartment, and an aft unpressurized compartment. The forward compartment housed two pilots, a flight engineer, and up to two passengers. The aft compartment provided accommodation for one passenger and could be used only at low altitudes since it lacked pressurization. [3]