2006-08-16 01:18:46 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Most light aircrafts with upper wings have the fuel entering in the engine by "gravity feed", that is the fuel is higher than the engine, so the fuel goes down naturally.
If the fuel is below the engine (often the case for low wings aircrafts), you need a pump to push the fuel to the engine.
An aerobatic aircraft flies in any position, so we cannot count on gravity or even the normal pump to insure the fuel will reach the engine. For this, we use a second pump, called "Boost pump"
Other aircrafts (like airliners, jets etc) need the fuel to be at a higher pressure than atmospheric pressure. The pumps that increase the fuel pressure are also called boosters.
2006-08-16 01:32:44 · answer #1 · answered by just "JR" 7 · 0⤊ 0⤋
To ensure positive fuel pressure to aircraft engines irrespective of the aircraft attittude.
2006-08-16 01:34:46 · answer #2 · answered by suryan 1 · 0⤊ 0⤋
To pump the fuel
2006-08-16 02:41:44 · answer #3 · answered by Anonymous · 0⤊ 0⤋
to pressurize the fuel before burning it
2006-08-16 01:28:24 · answer #4 · answered by ramg 2 · 0⤊ 0⤋