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Friday, January 6, 2023

on video Understanding the Fuel Systems of an Aircraft: Gravity Feed System and Pressure Feed Fuel System!

 we look at the components and working of the fuel system of an aircraft. The fuel system has different functions such as storing fuel; supplying fuel to engines and APU; and giving indications in the cockpit. 


We see different types of Fuel Systems such as Gravity Feed Fuel system and the Pressure feed fuel system. The video gives explanation on the components that make up these systems and how the systems work.In most light aircraft, the fuel tanks are located inside the wings. A filler cap on top of the wing allows them to be filled; drains in the bottom allow fuel samples to be drawn for inspection and any moisture to be removed. Vents allow internal pressures to equalize. A sensing unit in each tank measures the fuel quantity, which is displayed on the fuel quantity gauges in the cockpit.In high-wing aircraft, gravity propels the fuel from tank to carburetor, and fuel pumps might not be necessary. However, a low-wing airplane—and high-wing craft with fuel-injected engines—will need an engine-driven pump to move the fuel. There should be an electrically powered pump for engine start and use as a backup. You’ll also see a fuel pressure gauge, so you can know that the pumps are working properly.
The fuel selector valve allows the pilot to choose which tank is feeding fuel to the engine. Some systems require you to alternate between Left and Right tanks, while others offer a Both position. Some aircraft might favor one side over the other when Both is selected; select the appropriate side to rectify any fuel imbalance. The selector also has an Off position.
Aircraft with carbureted engines will have a manual primer that pushes additional fuel into the engine to help in starting. (The electric fuel pump fills this role for fuel-injected powerplants.)
Before the fuel moves into the carburetor or fuel injector, it will pass through a strainer that’s normally located at the lowest point in the fuel system, so that it can collect water and any other contaminants heavier than avgas. The fuel strainer’s sump is below the engine; you’ll take a fuel sample from here, too, during preflight.


 

 we look at the components and working of the fuel system of an aircraft. The fuel system has different functions such as storing fuel; supplying fuel to engines and APU; and giving indications in the cockpit. 


We see different types of Fuel Systems such as Gravity Feed Fuel system and the Pressure feed fuel system. The video gives explanation on the components that make up these systems and how the systems work.In most light aircraft, the fuel tanks are located inside the wings. A filler cap on top of the wing allows them to be filled; drains in the bottom allow fuel samples to be drawn for inspection and any moisture to be removed. Vents allow internal pressures to equalize. A sensing unit in each tank measures the fuel quantity, which is displayed on the fuel quantity gauges in the cockpit.In high-wing aircraft, gravity propels the fuel from tank to carburetor, and fuel pumps might not be necessary. However, a low-wing airplane—and high-wing craft with fuel-injected engines—will need an engine-driven pump to move the fuel. There should be an electrically powered pump for engine start and use as a backup. You’ll also see a fuel pressure gauge, so you can know that the pumps are working properly.
The fuel selector valve allows the pilot to choose which tank is feeding fuel to the engine. Some systems require you to alternate between Left and Right tanks, while others offer a Both position. Some aircraft might favor one side over the other when Both is selected; select the appropriate side to rectify any fuel imbalance. The selector also has an Off position.
Aircraft with carbureted engines will have a manual primer that pushes additional fuel into the engine to help in starting. (The electric fuel pump fills this role for fuel-injected powerplants.)
Before the fuel moves into the carburetor or fuel injector, it will pass through a strainer that’s normally located at the lowest point in the fuel system, so that it can collect water and any other contaminants heavier than avgas. The fuel strainer’s sump is below the engine; you’ll take a fuel sample from here, too, during preflight.


 

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