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For air with a heat capacity ratio =, then =; other gases have in the range 1.09 (e.g. butane) to 1.67 (monatomic gases), so the critical pressure ratio varies in the range < / <, which means that, depending on the gas, choked flow usually occurs when the downstream static pressure drops to below 0.487 to 0.587 times the absolute pressure in ...
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F-15C entered service with CFT capability. [1] Initially known as FAST packs (Fuel And Sensor Tactical), [1] each unit carried an additional 750 US gallons (2,839.1 L) of fuel, [2] while retaining hardpoints for four AIM-7F Sparrow missiles or bombs, some on the FAST packs. [3] They were first tested on the F-15B in 1974.
In the extraction of petroleum (and other heavy-duty fluid handling contexts), a choke valve (or "choke") is an adjustable flow limiter that is designed to operate at a large pressure drop, at a large flow rate, for a long time.
A low pressure ratio fan (such as that used on a high bypass ratio turbofan) has a range of working lines. At high flight speeds, the ram pressure ratio factors up the cold nozzle pressure ratio, causing the nozzle to choke. Above the choking condition, the working lines tend to coalesce into a unique steep straight line.
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In the diagram, the Fanno line reaches maximum entropy at H = 0.833 and the flow is choked. According to the Second law of thermodynamics , entropy must always increase for Fanno flow. This means that a subsonic flow entering a duct with friction will have an increase in its Mach number until the flow is choked.
English: Schematic providing overall dimensions of the Titan submersible designed and built by OceanGate. Titan is depicted in a side view, with the forward hatch to the left. The pressure hull consists of three major components: two hemispherical titanium end caps, joined to a cylindrical carbon fiber composite hull via titanium interface ...