𝐀𝐮𝐱𝐢𝐥𝐢𝐚𝐫𝐲 𝐏𝐨𝐰𝐞𝐫 𝐔𝐧𝐢𝐭

🛫An Auxiliary Power Unit is a device on a vehicle that provides energy for functions other than propulsion.

🛫It provides power other than from propulsion systems, the main purpose of APU aircraft to provide power when starting engines.

🛫APU is used to run the support systems when the engine is turned off, this causes the cabin air be comfortable, some APU also connected pump hydraulic that allows to operate the equipment hydraulic (flight control) before starting the machine (turbine, propeller, jet).

🛫There are some part APU such as: generator, oil filter, fuel nozzles, oil tank, bleed water manifold, etc.

🛫They are commonly found on large aircraft and naval ships as well as some large land vehicles 🛫Aircraft APUs generally produce 115 V alternating current (AC) at 400 Hz(rather than 50/60 Hz in mains supply), to run the electrical systems of the aircraft; others can produce 28 V direct current (DC).

🛫APUs can provide power through single- or three-phase systems.

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𝐖𝐞𝐭-𝐒𝐮𝐦𝐩 𝐎𝐢𝐥 𝐒𝐲𝐬𝐭𝐞𝐦

Wet Sump Oil System ✳️The engine oil system performs several important functions: 🛩️Lubrication of the engine’s moving parts . 🛩️Cooling of the engine by reducing friction . 🛩️Removing heat from the cylinders . 🛩️Carrying away contaminants . 🛩️Providing a seal between the cylinder walls and pistons. ➡️Subscribe us for more aircraft knowledge and aircraft fact⬅️ ➡️Do Share with your Friends⬅️

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Basic Clouds 🛩️Cloud type is determined by its height, shape, & characteristics. They are classified according to the height of their bases as low, middle, or high clouds, as well as clouds with vertical development. 🛩️Low clouds are those that form near the Earth’s surface and extend up to about 6,500 feet AGL. They are made of water droplets but can include supercooled water droplets that induce hazardous aircraft icing. Typical low clouds are stratus, stratocumulus, nimbostratus. Fog is also low cloud formation. This Clouds create low ceilings, hamper visibility, & can change rapidly. They influence flight planning & can make visual flight rules (VFR) flight impossible. 🛩️Middle clouds form around 6,500 feet AGL & extend up to 20,000 feet AGL. They are composed of water, ice crystals, & supercooled water droplets. Typical middle-level clouds include altostratus & altocumulus. These types of clouds are encountered on cross-country flights at highe...

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