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A line-replaceable unit (LRU [1]), lower line-replaceable unit (LLRU), [citation needed] line-replaceable component (LRC), or line-replaceable item (LRI) [2] is a modular component of an airplane, [3] ship or spacecraft [4] (or any other manufactured device) that is designed to be replaced quickly at an operating location (1st line).
A separate actuator on the piping releases pressure in the line if it crosses a threshold. This releases the pressure on the back of the seal, causing the valve to open. The essential parts of a PORV are a pilot valve (or control pilot), a main valve, a pilot tube, the dome, a disc or piston, and a seat. The volume above the piston is called ...
In this example, the PTU transfers hydraulic power from the right hydraulic system to the left hydraulic system. A PTU consists of a hydraulic motor paired with a hydraulic pump via a shaft. [1] As the connection is purely mechanical, there is no intermixing of hydraulic fluid between the left and right hydraulic systems during PTU operation.
Their range includes products for mobile and industrial hydraulics, elevator hydraulics, hydraulic drives for high-voltage switches and height-adjustable workbenches. Some of the many components produced include hydraulic pumps, hydraulic motors, valves, cylinders, power units, electronic devices and associated systems. [1]
Remote controls in the 2000s include Bluetooth or Wi-Fi connectivity, motion sensor-enabled capabilities and voice control. [2] [3] Remote controls for 2010s onward Smart TVs may feature a standalone keyboard on the rear side to facilitate typing, and be usable as a pointing device. [4]
Bagger 288 Class overview; Name: MAN TAKRAF RB288 (1978-2003); Bagger 288 (2003-Present); Builders: ThyssenKrupp: Operators Germany Cost € 92.46 million (2007) (equivalent to € 114.23 million in 2022) [1] or US$ 100 million (2007) (equivalent to US$ 141.6 million in 2023) [2]
Exhaust brakes are simpler in operation than an engine brake.Essentially, the exhaust pipe of the vehicle is restricted by a valve.This raises the pressure in the exhaust system, forcing the engine to work harder on the exhaust stroke of its cylinders, so again the engine is acting as an air compressor, with the power required to compress the air being withheld from the exhaust pipe, retarding ...
The Zenith Flash-Matic was the first wireless remote control, invented by Eugene Polley in 1955. It had only one button that was used to power on and off, channel up, channel down, and mute. The Flash-matic's phototechnology was a significant innovation in television and allowed for wireless signal transfer previously exclusive to radio. [1] [2]