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2. High-Enthalpy Arc Heated Facility - Wikipedia

   en.wikipedia.org/wiki/High-Enthalpy_Arc_Heated...

   The HEAT-H2 Test Unit is an arc-heated aerothermal tunnel providing high-enthalpy flow at high Mach numbers and dynamic pressures simulating hypersonic flight at pressure altitudes up to 120 atm. H2 utilitzes an N-4 Huels-type arc heater to generate high-temperature, high-pressure air for expansion through a hypersonic nozzle into the evacuated test cell.

3. Modular Command Post System - Wikipedia

   en.wikipedia.org/wiki/Modular_Command_Post_System

   Modular Command Post System (MCPS) tent, Type 3 (green) A M577 command post carrier with a MCPS tent. The Modular Command Post System (MCPS) is a modular tent system for mobile or temporary tactical operations centers, developed in the early-mid 1990s by the United States Army. The tents are designed to be utilised as a free-standing shelter.

4. High altitude breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/High_altitude_breathing...

   At very high altitude, from 3,500 to 5,500 metres (11,500 to 18,000 ft) arterial oxygen saturation falls below 90% and arterial P O 2 is reduced to the extent that extreme hypoxemia may occur during exercise and sleep, and if high altitude pulmonary edema occurs. In this range severe altitude illness is common. [2]

5. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. List of equipment of the People's Liberation Army Ground Force

   en.wikipedia.org/wiki/List_of_equipment_of_the...

   Type 64 pistol, semi-automatic, 7.62×17mm Type 64. Remains in use with police units. Type 67 pistol, 7.65×17mm rimless ball. Has an integral suppressor. Used by Special Forces. Improved variant of the Type 64 silenced pistol. Type 77 pistol, semi-automatic, 7.62×17mm or 9×19mm Parabellum. Phasing out. Type 80 pistol, automatic, 7.62×25mm ...

7. Electric heating - Wikipedia

   en.wikipedia.org/wiki/Electric_heating

   An ordinary electric shower often but not always has three heat settings: high (5.5 kW), low (2.5 kW), or cold (0 W) to use when a central heater system is available or in hot seasons. Higher power (up to 7.5 KW) and lower power (up to 3.2 KW) versions are also made, as well as versions with 4 heat settings or a variable heat setting.