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A Kiel probe is a device for measuring stagnation pressure or stagnation temperature in fluid dynamics. It is a variation of a Pitot probe where the inlet is protected by a "shroud" or "shield." Compared to the Pitot probe, it is less sensitive to changes in yaw angle , and is therefore useful when the probe's alignment with the flow direction ...
A diffuser is "a device for reducing the velocity and increasing the static pressure of a fluid passing through a system”. [1] The fluid's static pressure rise as it passes through a duct is commonly referred to as pressure recovery. In contrast, a nozzle is used to increase the discharge velocity and lower the pressure of a fluid passing ...
At least one author takes a different approach in order to avoid a need for the expression freestream static pressure. Gracey has written "The static pressure is the atmospheric pressure at the flight level of the aircraft". [15] [16] Gracey then refers to the air pressure at any point close to the aircraft as the local static pressure.
The static pressure is obtained through a static port. The static port is most often a flush-mounted hole on the fuselage of an aircraft, and is located where it can access the air flow in a relatively undisturbed area. [1] Some aircraft may have a single static port, while others may have more than one.
The ideal position for a static port is a position where the local air pressure in flight is always equal to the pressure remote from the aircraft, however there is no position on an aircraft where this ideal situation exists for all angles of attack. When deciding on a position for a static port, aircraft designers attempt to find a position ...
Rollover: The ignition of ceiling-level fire gases. Contrast Flashover, above. Roof sector (roof group, roof division): A crew, typically a ladder company, assigned to the roof of a structure, most often for purposes of vertical ventilation during a fire. May also be assigned to check roof-mounted equipment, HVAC, etc., for fire or malfunction.
Electronically controlled closed-circuit rebreathers have electro-galvanic oxygen sensors which monitor the partial pressure of oxygen, and electronic control systems, which inject more oxygen to maintain the set point, and issuing an audible, visual, or vibratory warning to the diver if the partial pressure of oxygen reaches dangerously high ...
The sensors are designed using solid-state physics. The process by which light propagates and reflects off surfaces is explained using optics. Sophisticated image sensors even require quantum mechanics to provide a complete understanding of the image formation process. Robots can also be equipped with multiple vision sensors to be better able ...